40th week of 2015 patent applcation highlights part 86 |
Patent application number | Title | Published |
20150280492 | DISTRIBUTING POWER BETWEEN DATA CENTERS - A data center operable using only electric power based on renewable energy. The data center includes at least one device driven by the electric power, a storage battery for storing the electric power, and a controller for switching the operating mode of the device over the course of time on the basis of predicted values for the amount of electric power generated using renewable energy, the amount of electric power stored in the storage battery, and the amount of electric power consumed by the device. | 2015-10-01 |
20150280493 | METHOD FOR CONTROLLING POWER SUPPLY AND ELECTRONIC DEVICE - An electronic device is provided. The electronic device includes a switch configured to selectively connect power supplied from a power adaptor connected to the electronic device, a system load configured to be included in the electronic device and to receive power from the power adaptor or a battery connected to the electronic device according to on/off of the switch, and a controller configured to turn off the switch when entering an emergency power mode in a state where the power adaptor is connected to the electronic device. | 2015-10-01 |
20150280494 | Power Source Conversion Module, Power Supply Apparatus and Power Supply Method - A power supply apparatus including: N+m power source conversion modules, where N power source conversion modules are main power source conversion modules; a power source conversion module includes a detection and switching unit and a conversion unit, where the detection and switching unit is separately connected to an output end of a first alternating current power source and an output end of a second alternating current power source, and the detection and switching unit is configured to monitor in real time a working state of the first alternating current power source and a working state of the second alternating current power source, close a channel between the conversion unit and one power source, which is in a normal working state, of the first alternating current power source and the second alternating current power source. | 2015-10-01 |
20150280495 | ELECTROMAGNETIC TRANSMISSION DEVICE, POWER AMPLIFICATION DEVICE, AND ELECTROMAGNETIC TRANSMISSION SYSTEM - In order to obtain an electromagnetic transmission device and an electromagnetic transmission system that emit high-power continuous microwaves stably onto a material or an irradiation target in electromagnetic heating systems and electromagnetic power transmission systems that are required to emit electromagnetic waves such as high-power microwaves, the electromagnetic transmission device, the power amplification device, and the electromagnetic transmission system emit, onto an irradiation target, electromagnetic waves that are modulated by a repeating pulse with a predetermined transmission duty cycle, or electromagnetic waves that are modulated by a repeating pulse with a predetermined transmission duty cycle and are amplified. | 2015-10-01 |
20150280496 | Improved Shaped Metallic Element for Making Laminations and Lamination Obtained by Joining a Plurality of Said Improved Shaped Metallic Elements - A shaped metallic element ( | 2015-10-01 |
20150280497 | Electric Motor Having A Polygon Stator - An electric motor has a polygon stator core. The polygon stator core includes yoke portions and teeth extending inwardly from the yoke portions. A winding slot is formed between adjacent teeth. Adjacent yoke portions are interconnected by a connecting portion. The winding slots include first winding slots and second winding slots of different shapes. The ratio of the area of a first winding slot to the area of a second winding slot is greater than or equal to 0.9 but less than or equal to 1.1. By changing the shape of the stator core, the size of the winding slots may be increased without increasing the radial dimension of the motor. | 2015-10-01 |
20150280498 | ROTOR FOR AN ELECTRIC MACHINE, AN ELECTRIC MACHINE AND METHOD FOR MANUFACTURING AN ELECTRIC MACHINE - A rotor for an electric machine includes a rotor core having a plurality of rotor sheets (RS | 2015-10-01 |
20150280499 | MAGNET INSERT DESIGN FOR ROTOR LAMINATION - A number of variations may include a product comprising a magnet holder for a rotor lamination comprising: a first portion, a second portion, and a third portion, wherein the first and second portions are linear and constructed and arranged to hold a magnet and wherein the third portion extends outward from approximately a center location between the first and the second portions, and wherein the third portion is constructed and arranged to carry a load from a centrifugal force of the magnet. | 2015-10-01 |
20150280500 | PERMANENT MAGNET EMBEDDED MOTOR, COMPRESSOR, AND REFRIGERATION AND AIR CONDITIONING DEVICE - A rotor core includes a plurality of first electromagnetic steel plates that are stacked in an axial direction and a plurality of second electromagnetic steel plates that are stacked in an axial direction at both ends of the electromagnetic steel plate group thereof. The first electromagnetic steel plates are provided therein with magnet insertion holes and first flux barriers. The second electromagnetic steel plates are provided therein with the magnet insertion holes, second flux barriers, and projections that regulate the positions of the magnets. The second electromagnetic steel plates are stacked at at least one of the axial direction ends of the electromagnetic steel plate group including the plurality of first electromagnetic steel plates and are provided at a position overhanging the axial direction end of a stator core. | 2015-10-01 |
20150280501 | METHODS AND SYSTEMS TO MOUNT A ROTOR TO A SHAFT - Methods, systems and apparatuses for mounting a motor rotor to a shaft of a compressor are disclosed. The shaft can include a rib region that is configured to form a press fit or a transition fit with the rotor bore. An end of the shaft can also include a plurality of crenulations that can be expanded outwardly in a radial direction relative to a centerline of the shaft. After the rotor is mounted onto the shaft, the crenulations can be expanded to eliminate the clearance between the shaft and the rotor to form a press fit with the rotor bore. | 2015-10-01 |
20150280502 | MULTIPLEX MULTIPHASE WINDING AC MOTOR AND ELECTRIC POWER STEERING APPARATUS - A multiplex multiphase winding AC motor includes an armature iron core provided with a plurality of teeth and a plurality of slots, an armature winding provided with two or more groups of multiphase windings that are wound around the teeth and are contained in the slots, a plurality of motor driving apparatuses independently connected with the two or more groups of multiphase windings, and a magnetic-field-pole iron core provided with a plurality of magnetic-field poles arranged in such a way as to face the armature iron core through a gap; in the magnetic-field-pole iron core, a plurality of magnetic resistance elements for impeding a magnetic-flux flow in the circumferential direction thereof are formed. | 2015-10-01 |
20150280503 | STATOR OF ROTARY ELECTRIC MACHINE - A stator of a rotary electric machine includes a stator core and a coil. The stator core includes slots extending in an axial direction of the stator core and a first axial end surface in the axial direction. The coil is attached to the stator core and includes slot coils disposed in the slots and connection coils. At least one of the slot coils includes a slit in a part positioned in a slot among the slots. The slit extends through the at least one of the slot coils from a first axial end side of the stator core toward a second axial end side of the stator core opposite to the first axial end side in the axial direction. The connection coils are connected to the slot coils at a contact portion at a position outward from the first axial end surface in the axial direction. | 2015-10-01 |
20150280504 | MOTOR WITH DAMPING MEANS - An electrical motor including a stator, said stator comprising a back iron, a plurality of teeth extending therefrom, and windings wound around said teeth; a rotary body comprising permanent magnets positioned between said stator and said rotary body; said rotary body being coaxially rotatable relative to the stator about a central axis; means for rotating said rotary body about said central axis of rotation relative to said stator, and wherein said back iron of said stator further comprises a first loop of electrical resistive wire extending therein. | 2015-10-01 |
20150280505 | Axial Gap Dynamoelectric Machine - An axial gap dynamoelectric machine is provided with a stator core in which continuously wound coils ( | 2015-10-01 |
20150280506 | POWER GENERATOR FOR A HYDRO TURBINE - A power generator for a hydro turbine is axially coupled to the hydro turbine. The generator comprises a rotor arranged to rotate about an axis in response to fluid flow through said turbine. A first stator structure incorporates at least a first winding disposed circumferentially around the axis and axially displaced in a first inboard direction from the rotor. A second stator structure incorporates a least a second winding disposed circumferentially around the axis and axially displaced in a second outboard direction from the rotor, the rotor being arranged to electrically couple with the windings. | 2015-10-01 |
20150280507 | ROTARY ELECTRIC MACHINE - Conductor terminals of a plurality of conductor wires that constitute a stator winding each extend outward at a first axial end of a stator core, and among the conductor terminals, conductor terminals through which same-phase electric power flows are respectively connected by crossover wires, and circumferential regions that are occupied by the crossover wires are separated from each other in a circumferential direction. | 2015-10-01 |
20150280508 | ROTARY ELECTRIC MACHINE STATOR AND ROTARY ELECTRIC MACHINE - An insertion groove is disposed on a tubular portion overlapping portion that is overlapped with an inner circumferential surface of a tubular portion of the stator core. Inter-coil insulating bodies that are disposed between a plurality of stator coils include a groove inserted portion. The groove inserted portion includes: a first inserted portion that can be inserted inside the insertion groove when the insulating film is in a bent and folded state; and a second inserted portion that is contiguous to the first inserted portion, a shape of a visible outline of a cross section of the second inserted portion being different than that of the first inserted portion. The second inserted portion generates a stronger elastic force of recovery than the first inserted portion when the groove inserted portion is inserted into the insertion groove. | 2015-10-01 |
20150280509 | ELECTRIC MOTOR - An electric motor has a stator, a rotor rotatable with respect to the stator, motor windings, a connection plate electrically connected to the motor windings, and a power lead for connecting the motor to a power source. The power lead is connected to the connection plate by an electrical connection and by a separate mechanical connection. The mechanical connection protects the electrical connection from vibration or movement which may otherwise break the electrical connection. | 2015-10-01 |
20150280510 | GROOVED WEDGE FOR ROTOR - A grooved wedge for a rotor is provided. In one aspect, slot wedges are mounted in radially-arranged slots to cap field coils disposed therein. Each wedge has a wedge dovetail that engages with a dovetail formed in a wall of each slot. The wedge dovetail has a groove formed near a contacting surface that interfaces with the slot dovetail. The groove extends axially from a first wedge end face to a second wedge end face opposite therefrom. | 2015-10-01 |
20150280511 | HOUSING OF A DRIVING DEVICE - A housing of a driving device, in particular an electric motor adjustment drive for a motor vehicle, has a housing opening, which is covered by a gas-permeable membrane, in particular a membrane that is impermeable to liquid. The housing opening is surrounded by a collar contour, which is interrupted locally at the circumference and within which the membrane lies. | 2015-10-01 |
20150280512 | ELECTRIC MOTOR HAVING SEAL MEMBER AND METHOD OF PRODUCING ELECTRIC MOTOR - A method of producing an electric motor is provided. The electric motor includes a housing portion attached to at least one of end portions in an axial direction, a rotor provided with a rotary shaft extending in the axial direction, and an annular seal member provided between the housing portion and the rotor. At least one of various types of seal members designed for different applications is selected as the seal member, and the selected seal member is customized in accordance with the shape of the housing portion and the rotary shaft. | 2015-10-01 |
20150280513 | MOTOR HOUSING - A motor housing includes a central body having a central cavity region configured to receive an electric motor. Also included is a first end portion having a first inner surface that defines a first internal cavity region configured to receive a first end winding of a stator of the electric motor, wherein the first internal cavity region comprises a first radius defined by a distance from a main axis of the motor housing to the first inner surface. Further included is a second end portion having a second inner surface that defines a second internal cavity region configured to receive a second end winding of the stator, wherein a ratio of the first radius to a first end portion wall thickness ranges from 19.89 to 27.85. | 2015-10-01 |
20150280514 | QUICK RELEASE AUTOMATIC TENSIONING MOTOR BASE AND SPRING COMPRESSION RETENTION MECHANISM - A quick-release automatic tensioning motor base for supporting a motor. The motor is operably coupled to a device to be driven via a drive belt. The motor base includes base brackets and at least one guide rail fixedly coupled between the base brackets. A platform assembly, which supports the motor, is slidably coupled to the guide rail. A spring assembly is selectively coupled between the base brackets and fixedly coupled to the platform assembly. The spring assembly applies a biasing force to the platform assembly to maintain a belt tension along the drive belt. A quick-release assembly selectively engages the spring assembly and base brackets to permit movement of the quick-release assembly between a fastened position and a released position. A spring compression retention assembly is operably coupled to the spring assembly to maintain spring compression on the spring assembly even when the quick-release assembly is in the released position. | 2015-10-01 |
20150280515 | Integrated Electronic Switch and Control Module for a Power Tool - An electronic switch and control module for a power tool having an electric motor is provided. The module includes a module housing including a bottom surface, side walls, and an open face; a printed circuit board (PCB) fittingly received from the open face of the module housing and securely disposed within the module housing; an encapsulation member arranged to mate with a mating surface of the side walls of the module housing to form an enclosed compartment over a portion of the PCB to enclose at least one electronic or electro-mechanical element mounted on a surface of the PCB; and power switches mounted on the surface of the PCB within an open compartment of the module housing where the encapsulation member does not enclose the surface of the PCB, the power switches being electrically configured to switchably connect a supply of electric power from a power source to the electric motor. | 2015-10-01 |
20150280516 | Integrated Electronic Switch and Control Module for a Power Tool - An electronic switch and control module for a power tool having an electric motor is provided. The module includes a printed circuit board (PCB), an encapsulation member forming an enclosed compartment enclosing a portion of a surface of the PCB, and power switches mounted on the surface of the PCB outside the enclosed compartment, where the power switches are electrically configured to switchably connect a supply of electric power from a power source to the electric motor. The module further includes an input unit having at least one electro-mechanical element at least partially disposed within the enclosed component and generating a signal for controlling a switching operation of the plurality of power switches. | 2015-10-01 |
20150280517 | Integrated Electronic Switch and Control Module for a Power Tool - An electronic switch and control module for a power tool having an electric motor is provided. The module includes a module housing including a bottom surface, side walls, and an open face, a printed circuit board (PCB) received from the open face of the module housing and securely disposed within the module housing at a distance from the bottom surface of the module housing; power switches mounted on a top surface of the PCB, and heat sinks discretely arranged and each mounted over a respective one of the plurality of power switches and secured to the top surface of the PCB to transfer heat away from the power switch through the open face of the module housing. The module further includes an input unit having conductive tracks disposed on the PCB and an electro-mechanical element engaging the plurality of conductive tracks, the input unit generating a signal for controlling a switching operation of the plurality of power switches, and a controller mounted on the PCB configured to control the switching operation of the power switches based on the signal from the input unit. | 2015-10-01 |
20150280518 | GENERATING ELECTRICITY FROM THE EARTH - A system for generating electricity from the geomagnetic field and rotation of the earth is presented. The earth rotates through the geomagnetic field to form a potential difference between first and second terrestrial charged bodies. The first and second charged bodies are spaced apart in a direction substantially normal to the earth's surface. The system comprises an electrical load, a first current path, and a second current path. The electrical load has a supply input and a ground output. The first current path is coupled to the first charged body and to the supply input of the electrical load, for supplying the potential difference to the electrical load. The second current path is coupled to the ground output of the electrical load and to the second charged body. As a result of this arrangement, an electric current related to the potential difference is generated in the electrical load. | 2015-10-01 |
20150280519 | GRAVITATIONAL ENERGY POWERED GENERATOR - A gravitational energy powered generator that includes an inflatable container configured to move vertically up and down a track via one or more connectors from the inflatable container. A number of valves to insert or extract gas or liquid from the inflatable container are included as well as a power generating component that either connects to the container itself or the belt with the containers connected to it. The gravitational energy powered generator thereby produces power generated via kinetic movement of the container along the track. | 2015-10-01 |
20150280520 | ELECTRIC MACHINE AND METHOD FOR COOLING AN ELECTRIC MACHINE - An electric machine includes an inner fan in an inner cooling circuit and an outer fan for producing an outer coolant flow that is separate from the inner cooling circuit. The inner and outer fans are connected to a common shaft of the electric machine and have opposite delivery directions along an axial direction of the electric machine. The outer fan is arranged in a fan housing which has an inlet opening for the inward flow of a coolant of the outer coolant flow, and includes an air directing device, which guides the coolant in a line section which extends in the radial direction of the electric machine from the inlet opening towards the outer fan. | 2015-10-01 |
20150280521 | COOLING MEDIUM SUPPLY/DISCHARGE DEVICE AND SUPERCONDUCTING ROTARY MACHINE INCLUDING COOLING MEDIUM SUPPLY/DISCHARGE DEVICE - A cooling medium supply/discharge device includes a cylindrical rotary casing which is rotatable with a rotary shaft of the rotor; a cylindrical stationary casing fixed such that the stationary casing extends inward relative to the rotary casing and coaxially with the rotary casing, the stationary and rotary casings being relatively rotatable; a first stationary cylindrical body which is inserted into the stationary casing such that the first stationary cylindrical body is not rotatable; a first rotary cylindrical body which is inserted into the first stationary cylindrical body with a gap such that the first rotary cylindrical body is rotatable together with the rotary shaft; a second stationary cylindrical body which is inserted into the first stationary cylindrical body such that the second stationary cylindrical body is not rotatable; and a second rotary cylindrical body which is inserted into the first rotary cylindrical body and rotatable together with the rotary shaft. | 2015-10-01 |
20150280522 | ELECTRIC MACHINE HAVING ROTOR COOLING ASSEMBLY - A cooling assembly is disclosed for use with an electric machine having bearings, a shaft rotatably supported by the bearings, a rotor connected to the shaft, and a stator annularly surrounding the rotor. The cooling assembly may have an end cap configured to engage an end of the rotor and the shaft to thereby axially locate the rotor relative to the shaft. The end cap may include an annular groove formed therein to receive a flow of cooling oil. The cooling assembly may further have an annular baffle axially connected to an end of the end cap and extending radially inward at least partially across an opening of the annular groove, and a slinger axially connected to the annular baffle opposite the end cap. The slinger may include a recess formed therein that is configured to trap the cooling oil after it flows through the annular baffle. | 2015-10-01 |
20150280523 | ELECTRICAL MACHINE ROTORS - Rotors for electrical machines and methods of fabricating the same are disclosed. Electrical machine rotors may include a hollow non-magnetic shaft, an active region, and a plurality of coolant passages extending within the active region. The hollow non-magnetic shaft may extend along an axis and have an exterior surface that defines a shaft space extending along the axis. At least a portion of the active region may be disposed within the shaft space. | 2015-10-01 |
20150280524 | METHOD AND DEVICE FOR LIQUID COOLING OF AN ELECTRIC MOTOR - The present invention relates to a method for liquid cooling of an electric motor ( | 2015-10-01 |
20150280525 | INDUCTION MOTOR WITH TRANSVERSE LIQUID COOLED ROTOR AND STATOR - An electric machine with fluid cooling. The electric machine includes a stator, the stator having a stator winding and a stator core having a plurality of stacked magnetic laminations, each of the laminations of the stator core having a plurality of apertures overlapping to form a plurality of stator fluid channels, a stator fluid channel of the plurality of stator fluid channels being not entirely axial. The electric machine further includes a rotor, the rotor having a shaft and a rotor core having a plurality of stacked magnetic laminations, each of the laminations of the rotor core having a plurality of apertures overlapping to form a plurality of rotor fluid channels, and a rotary fluid coupling in fluid communication with the rotor fluid channels. The rotor and the stator are configured to form a magnetic circuit comprising an air gap between the rotor and the stator. | 2015-10-01 |
20150280526 | ELECTRIC MACHINE WITH HEAT TRANSFER ENHANCER - An electric machine includes a core defining a first axial end, a second axial end opposite the first axial end, and a plurality of slots extending between the first axial end and the second axial end. Windings are wound on the core. The windings include in-slot portions positioned in the plurality of slots and end turn portions positioned on the first axial end and the second axial end. A cooling tube is coupled to the end turn portions of the windings. A heat transfer member extends between the cooling tube and the windings and is in contact with the cooling tube and the windings. | 2015-10-01 |
20150280527 | RADIATION HEAT TRANSFER OF INTERNAL MOTOR COMPONENTS BY ELECTRO-MAGNETIC WAVES - A motor assembly including a housing with a motor portion having an opening for receiving a motor housing/stator assembly, rotor assembly, front and rear end caps and bearings, an encoder coupled to the motor, and an rear cover for enclosing the opening of the motor portion of the housing, the rear cover at least partially surrounding the encoder. At least one of an interior surface of the rear cover or an exterior surface of the encoder comprise a material having an emissivity greater than 0.9. | 2015-10-01 |
20150280528 | SPEED DETECTION CIRCUITS FOR PERMANENT MAGNET ALTERNATORS - A permanent magnet alternator (PMA) includes a rotatable shaft, windings, a shunt regulator circuit, and a speed detection circuit. The rotatable shaft is connected electromagnetically to the windings. The shunt regulator circuit is electrically connected to the windings. A current sense transformer with a primary coil is electrically connected to the shunt regulator circuit. A secondary coil is electrically connected to a comparator circuit with reference voltage and generates voltage pulse indicating PMA speed. The voltage pulses form an output corresponding to and indicative of rotation speed of the shaft suitable for processing by a processor to present a PMA speed indication for use in the overall system architecture as a measurement parameter. | 2015-10-01 |
20150280529 | Positioning Device in Gantry Type of Construction - A positioning device in a gantry type of construction includes two linear guides that are arranged parallel to each other on a base and support a first cross member and a second cross member in a manner allowing movement in a first direction. A carriage having a functional element is supported on the first cross member in a manner allowing movement in a second direction. Position-measuring devices for measuring the position of the carriage relative to the second cross member are disposed on the carriage and on the second cross member. | 2015-10-01 |
20150280530 | FIBER OPTIC SENSING APPARATUS FOR DETECTING STATOR SLOT TEMPERATURES AND STATOR INCLUDING SUCH APPARATUS - A sensing apparatus ( | 2015-10-01 |
20150280531 | ELECTRIC MOTOR HAVING A THERMAL FUSE - An electric motor for driving a motor vehicle component, particularly a fan wheel for cooling coolant water, contains a rotor that is rotatably mounted opposite a stator, and an electronic system. The electronic system contains a punched grid provided with a plastic over-mold and a current path which conducts the motor current and has two current path ends spaced apart from one another forming an interruption point that is bridged by a thermal fuse. The thermal fuse has a spring-loaded contact bridge which is held so as to pivot about an axis that extends perpendicularly to the plane in which the interruption point lies. | 2015-10-01 |
20150280532 | ELECTRIC TOOL - A rechargeable grinder includes a brushless motor, a main body housing configured to accommodate the brushless motor, a main switch and a micro switch configured to distribute power to the brushless motor, and a switch lever capable of moving with respect to the main switch and the micro switch, wherein a lock off lever capable of operating the micro switch in association with movement of the switch lever toward a switch is provided so as to be movable between a lock release position in which the micro switch can be operated and a lock position in which the micro switch cannot be operated. | 2015-10-01 |
20150280533 | CONNECTOR OF VEHICULAR ANGLED CONNECTOR-INTEGRATED SERVO MOTOR AND PRODUCTION METHOD THEREOF - A primary molded body having an angled connector that is integrally connected to an insulating annular body provided in a stator of a motor section, and that has a plurality of terminals extending along an axial direction of the motor section; a through-hole that is formed in the primary molded body and runs through the angled connector from an interior of the insulating annular body; a secondary molded body that is molded so as to cover the primary molded body; a secondary molded connector that is formed in the secondary molded body and covers the angled connector; and a connector opening that is formed in the secondary molded connector and communicates with the through-hole, wherein an outlet of the through-hole communicates with the connector opening. | 2015-10-01 |
20150280534 | SLIP RING DEVICE - A slip ring device ( | 2015-10-01 |
20150280535 | Permanent Magnet Brushless Motor - A permanent magnet brushless motor has a stator and a rotor. The stator has a yoke and s teeth extending from the yoke, forming a stator core, where s is an integer greater than four. Coils of a stator winding are wound about the teeth. The rotor has a shaft, a rotor core fixed to the shaft and a permanent magnet mounted to the rotor core. The permanent magnet forms p magnetic poles, where p is an even number greater than 2 but less than s. Each section of the permanent magnet corresponding to a respective magnetic pole is divided into n equal parts by n−1 magnet grooves, where n is an integer greater than 1 and p*n is an integral multiple of s. The magnet grooves significantly increase the detent torque of the motor. | 2015-10-01 |
20150280536 | ELECTRIC MACHINE WITH PERMANENTLY EXCITED INNER STATOR - An electric machine includes an outer stator having a plurality of windings, an inner stator having a plurality of permanent magnets and arranged within the outer stator in concentric relationship to the outer stator, and a rotor arranged between the outer stator and the inner stator in concentric relationship to the outer and inner stators and movable relative to the outer and inner stators. The rotor includes a mounting element which is made from a non-magnetic material and has a plurality of recesses, with a magnetically soft segment being arranged in each of the recesses. A first cooling device cools the permanent magnets of the inner stator. | 2015-10-01 |
20150280537 | LINEAR ACTUATOR - Provided is a linear actuator which is simple in structure, inexpensive to manufacture, in addition, has small magnetic leakage, and can provide a large inertial force without increasing the number of parts and weight. The linear actuator is provided with an output shaft | 2015-10-01 |
20150280538 | ACTIVE ENERGY HARVESTING DEVICE - Disclosed is an active energy harvesting device. The device includes a rigid body configured to vibrate corresponding to vibration of an external vibration body and including a first end at which an energy harvesting structure is provided to convert mechanical energy into electric energy, a magneto-rheological material provided at a second end of the rigid body to be bound to the rigid body and including a material which is changed in elastic force according to the surrounding magnetic field strength, a fixing unit for binding the second end of the rigid body and the magneto-rheological material and connecting the rigid body to the external vibration body, and a first permanent magnet arranged symmetrically apart from the magneto-rheological material while interposing the magneto-rheological material therebetween and provided so as to adjust a gap from the magneto-rheological material and change an elastic coefficient of the magneto-rheological material according to the gap. | 2015-10-01 |
20150280539 | Primary part for a linear motor, a linear motor comprising the same, and method for manufacturing such primary part - The present invention relates to a primary part for a linear motor. It further relates to a linear motor comprising such primary part. Finally, the invention also relates to a method for manufacturing such primary part. | 2015-10-01 |
20150280540 | EcoCharge Power Plant - The earth's magnetic field has not been mined as a source of energy. With average field strength of 0.5×10 | 2015-10-01 |
20150280541 | SOLENOID DEVICE - A solenoid device includes a plunger driven in an axial direction, a wall portion arranged to oppose the plunger in the axial direction, and a respiratory pore cover covering an opening of a respiratory pore of the wall portion. A volume variable chamber is defined between the plunger and the wall portion. The respiratory pore cover defines a communication space communicated to the respiratory pore, and an opening which causes the communication space to communicate with an exterior space. A volume of the communication space is larger than a predetermined volume of fluid that flows through the respiratory pore from or into the volume variable chamber by a predetermined movement of the plunger. | 2015-10-01 |
20150280542 | CIRCUIT AND METHOD FOR REDUCING INDUCTOR MAGNETIC-CORE LOSS - A circuit for reducing inductor magnetic-core loss is disclosed. The circuit includes a switch transistor, a PWM signal source connecting to the switch transistor, an inductor connecting to the switch transistor, a load connecting to the switch transistor, and a frequency adjustment circuit. The frequency adjustment circuit obtains PWM signals from the PWM signal source and modulates the PWM signals to be a new square-wave signals to be outputted to the switch transistor. The switch transistor is configured for setting the frequency of the square-wave signals as the operation frequency so as to control a duration for which the current flowing through the inductor. The operation frequency of the switch transistor may be adjusted by modulating the frequency of the PWM signals. As such, the duration for which the current flowing through the inductor may be controlled so as to decrease the current amount flowing through the inductor. | 2015-10-01 |
20150280543 | DUTY CYCLE BALANCE MODULE FOR SWITCH MODE POWER CONVERTER - A duty cycle balance module (DCBM) for use with a switch mode power converter. One possible half-bridge converter embodiment includes a transformer driven to conduct current in first and second directions by first and second signals during and second half-cycles, respectively. A current limiting mechanism adjusts the duty cycles of the first and second signals when a sensed current exceeds a predetermined limit threshold. The DCBM receives signals representative of the duty cycles which would be used if there were no modification by the current limiting mechanism and signals D | 2015-10-01 |
20150280544 | EMULATED PEAK CURRENT LIMIT SCHEME FOR SWITCHING REGULATOR - An apparatus comprises a switching circuit, an error amplifier circuit, a current threshold circuit, and an over-current detection circuit. The switching circuit provides a switching duty cycle that includes a charge portion and a discharge portion. The error amplifier circuit generates an error signal representative of a difference between a target voltage value and a voltage at an output of the voltage regulator circuit. The switching circuit adjusts the switching duty cycle to regulate the voltage at the output using the error signal and a reference waveform signal. The current threshold circuit generates an adaptive peak current limit threshold. The over-current detection circuit generates an over-current signal when the reference waveform signal satisfies the adaptive peak current limit threshold during the charging portion of the switching cycle. The switching circuit interrupts one or more switching cycles when the reference waveform signal satisfies the adaptive peak current limit threshold. | 2015-10-01 |
20150280545 | SOFT-START FOR RESONANT CONVERTERS - A start-up circuit for a resonant converter is arranged such that, during start-up of the resonant converter, the start-up circuit provides a drive signal that is to be applied to a switching transistor of the resonant converter and that has a variable duty cycle and a variable frequency. A converter includes a voltage source, a capacitor connected to the voltage source, a first switching transistor connected to the voltage source, a transformer connected to the capacitor, and a start-up circuit arranged to drive the first switching transistor with the drive signal during start-up of the converter. A start-up method for a resonant converter including a first switching transistor includes driving the first switching transistor with a variable duty cycle and a variable frequency. | 2015-10-01 |
20150280546 | POWER CONVERSION DEVICE - A power conversion device includes a main circuit unit, a first current detector, a second current detector, a voltage detector, and a controller. The main circuit unit is connected to a DC voltage source and an AC power system. The main circuit unit includes an inverter including a plurality of switching elements. The main circuit unit converts a DC power to an AC power. The controller decides that whether the output current of the inverter falls within a range between an upper limit value and a lower limit value, stop an operation of the switching elements when the output current of the inverter falls beyond the range, and resume the operation of the switching elements when the output current of the inverter returns into the range. | 2015-10-01 |
20150280547 | Induction current sampling device and method for bridgeless PFC circuit - Disclosed are an induction current sampling device and method for a bridgeless PFC circuit. The device includes a first sampling unit, a second sampling circuit and a third sampling circuit, wherein the first sampling unit, connected in serial with a first switch transistor of the bridgeless PFC circuit, is configured to sample a current flowing through the first switch transistor to acquire a first sampling signal V | 2015-10-01 |
20150280548 | BRIDGELESS POWER FACTOR IMPROVEMENT CONVERTER - A bridgeless power factor improvement converter is configured with input terminals to which an AC voltage is input, output terminals from which a DC voltage is output, diodes, first and second switches, first and second coils, a pair of series diodes, and a control circuit. When one input terminal has a positive potential relative to the other input terminal, the control circuit performs a switching operation for only the first switch. When the one input terminal has a negative potential relative to the other input terminal, the control circuit performs the switching operation for only the second switch. A capacitor, which is provided independently from the pair of series diodes, is connected to at least one of the pair of series diodes in parallel. | 2015-10-01 |
20150280549 | POWER CONVERSION APPARATUS, CONTROL DEVICE FOR POWER CONVERSION APPARATUS, AND METHOD FOR CONTROLLING POWER CONVERSION APPARATUS - A power conversion apparatus includes a power converter, an LC filter, and a controller. The power converter is disposed between an AC power source and a load. The LC filter is disposed between the AC power source and the power converter. The controller controls the power converter to perform power conversion control between the AC power source and the load. The controller includes a command generator, an oscillation component acquirer, a regulator, and an actuator. The command generator generates an input current command including a command of an input current of the power converter. The oscillation component acquirer acquires an oscillation component of a current flowing through a capacitor of the LC filter. The regulator regulates the input current command based on the oscillation component acquired by the oscillation component acquirer. The actuator controls the power converter based on the input current command regulated by the regulator. | 2015-10-01 |
20150280550 | LOAD VOLTAGE CONTROL DEVICE, ELECTRONIC ENDOSCOPE AND ELECTRONIC ENDOSCOPE SYSTEM - A load voltage control device, comprising: a load disposed in a tip portion; a power supply circuit and a controller disposed in a proximal end portion; and a cable connecting the tip portion with the proximal end portion, the cable comprising a first and second power supply lines, the power supply circuit comprising at least one power supply, wherein the controller operates to: obtain a voltage applied to the load based on a voltage applied to an input point of the first power supply line, a current flowing through the first power supply line, a voltage applied to an input point of the second power supply line and a current flowing through the second power supply line; and adjust the power supply voltage by controlling the at least one power supply so that the voltage applied to the load becomes substantially equal to a predetermined reference voltage. | 2015-10-01 |
20150280551 | BOOSTER APPARATUS - To provide a booster apparatus capable of being configured without using a plurality of voltage generators and with a simple circuit. A booster apparatus is equipped with a voltage generator, a plurality of boosting capacitors connected in series with the voltage generator, intermediary capacitors, and switch circuits configured to perform switching control of connections between the voltage generator, the plurality of boosting capacitors and the intermediary capacitors. | 2015-10-01 |
20150280552 | MAGNETOELECTRIC DEVICE CAPABLE OF STORING USABLE ELECTRICAL ENERGY - A magnetoelectric device includes at least one reluctance component, at least one damping capacitor, and a switching circuit. The reluctance component includes a capacitive and inductive magnetic core unit having a loop-shaped first segment and a second segment connected to the first segment, and at least one coil wound around and loosely coupled to the magnetic core unit. The damping capacitor cooperates with the coil to forma resonant circuit. The switching circuit makes and breaks electrical connection between the coil and a DC power source so that an eddy current flowing through the resonant circuit may be generated for storing energy in the damping capacitor. | 2015-10-01 |
20150280553 | Power Converter With Capacitive Energy Transfer And Fast Dynamic Response - A converter circuit and related technique for providing high power density power conversion includes a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) stage. The circuits and techniques achieve high performance over a wide input voltage range or a wide output voltage range. The converter can be used, for example, to power logic devices in portable battery operated devices. | 2015-10-01 |
20150280554 | MULTIPLE POWER PATH MANAGEMENT WITH MICRO-ENERGY HARVESTING - An apparatus comprises an output port for a circuit load, a first input port for an energy harvest source, an input/output port a second energy source, a first circuit path from the energy harvest source to the second energy source at the input/output port and to the variable load at the output port, a second circuit path from the second energy source to the output port, a cold start circuit that produces a first voltage level at the output port by charging a capacitor at the output port using energy of the energy harvest source, and a main converter circuit that produces a second regulated voltage level at the input/output port using energy of the energy harvest source when the voltage at the output port capacitor is above a specified voltage value and uses the energy of the capacitor at the output port during startup of the main converter circuit. | 2015-10-01 |
20150280555 | PULSE FREQUENCY MODULATION SWITCHING STRATEGY FOR COUPLED INDUCTOR VOLTAGE REGULATORS - Methods and apparatus relating to pulse frequency modulation switching strategy for coupled inductor Voltage Regulators (VRs) are described. In an embodiment, logic is to cause a voltage converter (having at least a first switching phase for a first portion of a plurality of inductors and a second switching phase for a second portion of the plurality of inductors) to delay the second switching phase from the first switching phase. The plurality of inductors are magnetically coupled to each other. Other embodiments are also disclosed and claimed. | 2015-10-01 |
20150280556 | Transient Performance Improvement for Constant On-Time Power Converters - Response of a variable frequency switching constant on-time or adaptive on-time controlled power converter to a large step-up or step-down change in load is improved with a simple circuit that detects magnitude and polarity of a change in output voltage and initiates, extends or terminates conduction of power pulses from an input source through said power converter. Both the amplitude and duration of undershoot or overshoot of the transient response are reduced or, alternatively, the capacitance of an output filter may be significantly reduced and still provide comparable transient performance. The fast adaptive on-time control is applicable to multi-phase power converters using phase managers or one or more phase-locked loops for interleaving of power pulses. | 2015-10-01 |
20150280557 | BUCK DC-DC CONVERTER WITH FIXED FREQUENCY - A buck switching regulator implements a fixed frequency feedback control circuit including a voltage control loop and a frequency control loop to regulate the switching frequency of the buck switching regulator to a fixed or nearly fixed frequency. The voltage control loop, implementing ripple mode control, is configured to control the power switches in response to the switching regulator output voltage or a signal related to the switching regulator output voltage. The frequency control loop, implementing a phase-locked loop control scheme, is configured to adjust the on-time of the high-side switch so as to regulate the switching frequency to be equal to or be proportional to the reference frequency. | 2015-10-01 |
20150280558 | INTEGRATED CURRENT REPLICATOR AND METHOD OF OPERATING THE SAME - An integrated current replicator includes a first current sense resistor configured to sense a first input current to a power converter during a primary portion of a duty cycle and a first transconductance amplifier configured produce a first voltage at a common circuit node proportional to the first input current during the primary portion of the duty cycle. The integrated current replicator includes a second current sense resistor configured to sense a second input current to the power converter during a complementary portion of the duty cycle and a second transconductance amplifier configured produce a second voltage at the common circuit node proportional to the second input current during the complementary portion of the duty cycle. The integrated current replicator includes an amplifier configured to produce a voltage replicating the first input current and the second input current from the first voltage and the second voltage. | 2015-10-01 |
20150280559 | UNIFIED CONTROL SCHEME FOR NON-INVERTING HIGH-EFFICIENCY BUCK-BOOST POWER CONVERTERS - Methods and apparatus relating to a unified control scheme for non-inverting high-efficiency buck-boost power converters are described. In an embodiment, compensator logic causes a buck-boost power converter to provide an output voltage with a higher voltage level than an input voltage in a boost operational mode of the buck-boost power converter and to provide the output voltage with a lower voltage level than the input voltage in a buck operational mode of the buck-boost power converter. The compensator logic provides N+1 bits to Pulse Width Modulation (PWM) generator logic to cause the buck-boost power converter to provide the output voltage. One of the N+1 bits indicates whether the buck-boost power converter is to provide the buck operation or the boost operation. Other embodiments are also disclosed and claimed. | 2015-10-01 |
20150280560 | MULTI-PHASE SMPS WITH LOOP PHASE CLOCKS AND CONTROL METHOD THEREOF - A multi-phase SMPS has N switching circuits; a setting signal generator generating a setting signal based on an output signal of the SMPS; a clock signal generator generating a system clock signal; and a controller receiving the setting signal and the system clock signal, the controller generating N shifted phase clock signals according to the system clock signal, and the N shifted phase clock signals forming loop phase clocks, and the controller further generates N switching control signals based on the setting signal and the N shifted phase clock signals. | 2015-10-01 |
20150280561 | COMPARATOR FOR SYNCHRONOUS RECTIFICATION AND METHOD OF OPERATION - A buck converter includes a comparator having first and second gain stages that operate in compare and auto-zero modes. The comparator measures voltage drop across an N-channel transistor to determine when current through an inductor reaches zero. When the inductor current reaches zero, the N-channel transistor becomes inactive to prevent a reduction in efficiency caused by allowing negative inductor current to draw current from a load. The comparator is then placed in a low power state. When the comparator is not in a compare mode, the comparator can operate in an auto-zero mode to cancel offset when measuring the input of the comparator. | 2015-10-01 |
20150280562 | COMPARATOR FOR SYNCHRONOUS RECTIFICATION AND METHOD OF OPERATION - A boost converter includes a comparator having first and second gain stages that operate in compare and auto-zero modes. The comparator measures voltage drop across a P-channel transistor to determine when current through an inductor reaches zero. When the inductor current reaches zero, the P-channel transistor becomes inactive to prevent a reduction in efficiency caused by allowing negative inductor current to draw current from a load. The comparator is then placed in a low power state. When the comparator is not in a compare mode, the comparator can operate in an auto-zero mode to cancel offset when measuring the input of the comparator. | 2015-10-01 |
20150280563 | DIGITAL VOLTAGE REGULATOR CONTROLLER WITH MULTIPLE CONFIGURATIONS - A digital voltage regulator controller includes control logic, an interface and configuration logic. The control logic is operable to control power stages of a voltage regulator so that groups of one or more of the power stages individually regulate one or more output voltages of the voltage regulator. An external electrical parameter that indicates a location of the controller on a board or a version of the board is measured via the interface. The configuration logic is operable to determine a set of configuration parameters for the voltage regulator based on the location of the controller on the board or the version of the board as indicated by the external electrical parameter, and configure the control logic in accordance with the set of configuration parameters so that each output voltage is regulated based on the location of the controller on the board or the version of the board. | 2015-10-01 |
20150280564 | CONTROL DEVICE AND METHOD FOR REGULATING A MULTIPHASE DC-DC CONVERTER - The invention relates to a control device for regulating a multiphase dc-dc converter having at least one first converter branch and one second converter branch connected in parallel to the first converter branch. The control device comprises a switching signal generation device that is designed to determine measurement values for the current in the converter branches, to compare, for a first of the converter branches, the determined measurement value of the current in the first converter branch to a first upper threshold current value and a first lower threshold current value and, on the basis of the comparisons, to generate a first control signal for switching devices of the first converter branch, and for a second of the converter branches, to compare the determined measurement value of the current in the second converter branch to a second upper threshold current value and a second lower threshold current value and, on the basis of the comparisons, to generate a second control signal for switching devices of the second converter branch. The control device further comprises a threshold value generator, which is coupled to the switching signal generation device and is designed to generate upper and lower threshold current values for the switching signal generation device, to determine an actual current phase offset of the control signals for the switching devices in the first and second converter branches, and on the basis of the determined phase offset, to temporarily modify the second upper current threshold value and/or the second lower current threshold value. | 2015-10-01 |
20150280565 | BOOST CONVERTER CONTROL APPARATUS - The present invention minimizes system loss during execution of intermittent boosting. A boost converter control apparatus has: a target value setting device for setting a target value of output voltage that minimizes a loss of a power supply system including a DC power supply, a boost converter, and a loading apparatus; an intermittent controlling device for executing an intermittent process of boost control in such a manner that the output voltage is maintained in a range including the set target value; an average value calculating device for calculating an average value of the output voltage in an execution period of the intermittent process; and a target value correcting device for correcting the set target value to reduce a deviation between the calculated average value and the set target value. | 2015-10-01 |
20150280566 | SWITCH CIRCUIT FOR CONTROLLING SUPPLY OF ELECTRICAL ENERGY TO A LOAD - A switch circuit comprises an unidirectional power source module, an unidirectional load module, an inductor and a switch module. By controlling a switching operation of the switch module, the inductor is enabled to store or discharge the electrical energy so as to modulate the operating current. When the inductor supplies the electrical energy to the unidirectional load module, the inductor and the unidirectional load module consist of a loop. When the input voltage is at a higher potential, the switch circuit may control the operating current by the inductor's properties so as to modulate the operating power of the unidirectional load module, and when the input voltage is at a lower potential, the switch circuit still may store or discharge the electrical energy by switching the inductor so as to provide the operating current to the unidirectional load module. | 2015-10-01 |
20150280567 | SWITCHING REGULATOR - A switching regulator includes a load determination circuit. The load determination circuit feeds, to an offset voltage generation circuit, a different load determination signal at the time of light load or at the time of heavy load. The offset voltage generation circuit applies an offset voltage corresponding to whether a load is light or heavy to the inverting input terminal of a PWM comparator to acquire the responsiveness and the stability of the switching regulator. | 2015-10-01 |
20150280568 | SEMICONDUCTOR DEVICE - A semiconductor device includes a first semiconductor chip which includes a first power supply terminal and into which a circuit block which is operated by a power supply voltage supplied to the first power supply terminal is integrated, a power circuit that includes switching transistors and supplies the power supply voltage to the first power supply terminal, and a DCDC control unit that is formed on the first semiconductor chip and generates a control signal for controlling the turning on and off of the switching transistors in response to an information signal from the circuit block and a voltage information signal corresponding to an output voltage from the power circuit. | 2015-10-01 |
20150280569 | Variable Voltage Converter with Direct Output Voltage Clamping for Inverter System Controller - A power conversion circuit includes a variable voltage converter (VVC) with a stabilizing means for stabilizing its output voltage. The stabilizing means can be in the form of a diode that clamps the WC output voltage to the WC input voltage so that the output voltage does not drop below the input voltage when a load imposes a sudden power demand. The stabilizing means also enables a bypass mode in which transient power can be provided from a power source to an inverter without current flow through the VVC inductor or switches. When embodied as a diode, the stabilizing means can increase the maximum power that can be transferred by the power conversion circuit, improve the power response of the circuit, minimize control instability, and reduce power losses. | 2015-10-01 |
20150280570 | TRANSISTOR CIRCUIT OF LOW SHUTOFF-STATE CURRENT - A transistor circuit of low shutoff-state current includes: a first transistor, a transistor string, and a switch. The first transistor and the transistor string are connected in series. The switch is configured to shut off the circuit. The first transistor is configured to reduce the shutoff-state current flowing therethrough using the negative feedback effect of the transistor string when the circuit is in a shutoff state; and the transistor string is configured to reduce the shutoff-state current flowing therethrough using a negative gate-source electrode voltage difference thereof and the bulk effect of the transistor. | 2015-10-01 |
20150280571 | POWER CONVERSION CIRCUIT, MULTIPHASE VOLTAGE REGULATOR, AND POWER CONVERSION METHOD - Disclosed is a power conversion circuit that suppresses the flow of a through current to a switching element based on a normally-on transistor. The power conversion circuit includes a high-side transistor and a low-side transistor, which are series-coupled to each other to form a half-bridge circuit, and two drive circuits, which complementarily drive the gate of the high-side transistor and of the low-side transistor. The high-side transistor is a normally-off transistor. The low-side transistor is a normally-on transistor. | 2015-10-01 |
20150280572 | NON-RESONANT ZERO CURRENT MULTIPLE-OUTPUT POWER CONVERTER - Various exemplary embodiments relate to a power conversion device, including an input configured to receive input power, a first-stage circuit connected to the input configured to provide galvanic isolation between the input and a second-stage circuit, wherein the first-stage circuit comprises at least one first-stage power conversion unit, each first-stage power conversion unit including at least two primary switches, at least two secondary transistor switches, and an isolation transformer including a primary winding and a secondary winding, the second-stage circuit connected to an output of the first-stage circuit, the second-stage circuit comprising at least one second-stage power conversion unit configured to regulate the voltage to at least one output connected to a load, each at least one second-stage power conversion unit comprising a controller, a master circuit connected to the at least one controller, the master circuit configured to synchronize switching in the at least one second-stage power conversion unit, and where the master circuit is configured to drive the primary switches and the secondary transistor switches in the at least one first-stage power conversion unit. | 2015-10-01 |
20150280573 | System and Method for a Switched-Mode Power Supply - In accordance with an embodiment, a method of operating a switched-mode power supply includes synchronously rectifying a current in a secondary side of the switched-mode power supply by detecting a voltage drop of a secondary winding of a transformer and activating a semiconductor switch coupled to the secondary winding when the voltage drop is detected. The method also includes determining a digital signal transmitting the digital signal to a controller coupled to a primary winding of the transformer by switching the semiconductor switch in accordance with the digital signal | 2015-10-01 |
20150280574 | System and Method for a Switched-Mode Power Supply - In accordance with an embodiment, a method of operating a switched-mode power supply includes turning on a semiconductor switch coupled to a primary winding of a transformer for a first time period of a first cycle, turning off the semiconductor switch for a second time period of the first cycle, detecting a change in slew rate of a voltage at an output node of the semiconductor switch, determining a switch turn-on time based on detecting the change in the slew rate, and turning on the semiconductor switch at the determined switch turn-on time for a first time period of a second cycle. | 2015-10-01 |
20150280575 | CONTROL DEVICE, CONTROL METHOD OF POWER CONVERTER AND SWITCHING POWER SUPPLY - The disclosure relates to a control device, a control method of a power converter and a switching power supply using the control device. The control device of the power converter includes: a first control unit, which is coupled to the power converter to detect an output voltage of the power converter and is configured to generate a first control signal based on the output voltage; a variable resistor unit, which is connected to an output terminal of the first control unit to receive the first control signal and is configured to generate a resistance value based on the first control signal; and a second control unit, which is connected to the variable resistor unit and is configured to output a second control signal in order to control operations of a switch unit of the power converter. | 2015-10-01 |
20150280576 | System and Method for a Switched Mode Power Supply - In accordance with an embodiment, a method of controlling a switched-mode power supply includes demagnetizing a secondary winding of a transformer, monitoring an ending condition of the demagnetizing, tracking an elapsed time until the ending condition is detected based on the monitoring, and shutting down the switched-mode power supply when the elapsed time exceeds a predetermined threshold. | 2015-10-01 |
20150280577 | CURRENT RESONANCE TYPE POWER SUPPLY DEVICE - The present invention includes: a series circuit connected to a junction of a first switch element and a second switch element connected in series across ends of a DC power supply, and to one end of the DC power supply, and formed of a primary winding of a transformer and a capacitor; a rectifier/smoothing circuit configured to rectify and smooth a voltage generated in a secondary winding of the transformer thereby to extract a DC voltage; a control circuit configured to alternately turn on and off the first switch element and the second switch element; a voltage detector configured to detect a voltage of the DC power supply; and a duty controller configured to, under a light-load condition, set a duty ratio between the first switch element and the second switch element closer to 50% as a value of the voltage detected by the voltage detector becomes larger. | 2015-10-01 |
20150280578 | ISOLATED POWER CONVERTER AND SWITCHING POWER SUPPLY USING THE SAME - In one embodiment, an isolated power converter can include: (i) a transformer having a primary winding and a secondary winding; (ii) a secondary rectifier circuit coupled to the secondary winding; (iii) a power switch coupled between an input voltage source and a first terminal of the primary winding, where a second terminal of the primary winding is coupled to ground; (iv) a feedback circuit coupled between the first and second terminals of the primary winding, the feedback circuit being configured to generate a feedback voltage based on a voltage across the primary winding; (v) a control circuit configured to generate a control signal to control the power switch; and (vi) an over voltage protection circuit configured to activate a reset signal when the voltage feedback signal is greater than a threshold value, where the reset signal is configured to reset the control signal when activated. | 2015-10-01 |
20150280579 | POWER SUPPLY SYSTEM - There is provided a power supply system including a first power supply and a second power supply. The power supply system includes a power conversion circuit capable of bidirectionally sending and receiving power by bidirectional voltage conversion between the first power supply and the second power supply, converting the first voltage from the first power supply to output a third voltage and a fourth voltage, and converting the second voltage from the second power supply to output the third voltage and the fourth voltage. | 2015-10-01 |
20150280580 | POWER CONVERSION APPARATUS - A power conversion apparatus, which converts power of a DC power supply and provides it to a plurality of loadings, includes a transformer, an electronic switch, a leakage energy recycling circuit, and a plurality of output circuits. The transformer has a plurality of primary windings, which receives the power, and a plurality of secondary windings, which outputs the converted power. One end of the electronic switch is electrically connected to the primary windings; the other end thereof is electrically connected to the DC power supply. The leakage energy recycling circuit is electrically connected to the primary windings, and repeatedly and alternatively outputs the powers of positive and negative voltage. The circuit receives and stores leakage energy of the transformer, and feedbacks it to the transformer. The output circuits are electrically connected to the secondary windings to receive the converted power and to provide it to the loadings. | 2015-10-01 |
20150280581 | POWER SUPPLY DEVICE - A power supply device includes a power switch, a power delivering means configured to convert an input in accordance with switching operation of the power switch and output a result, and a switch control circuit configured to linearly control switching frequency of the power switch in accordance with an output detection voltage corresponding to an output voltage according to the output. | 2015-10-01 |
20150280582 | RESONANCE DC/DC CONVERTER - In a resonance DC/DC converter, an input circuit has a configuration including a DC power source, a resonance auxiliary coil, a primary-side coil, a switching element connected in series, and a rectifying element and a resonance capacitor connected to the switching element in parallel. Here, there are provided an inductance value shifting circuit configured to shift an inductance value of the resonance auxiliary coil, and a control device configured to control the inductance value shifting circuit and shift the inductance value of the resonance auxiliary coil in accordance with a voltage value of the DC power source so that a voltage across the primary-side coil becomes constant. | 2015-10-01 |
20150280583 | BIDIRECTIONAL SWITCHED MODE POWER SUPPLY - Invention is related to a bidirectional switched mode power supply for elevator power systems. The bidirectional switched mode power supply comprises an input for selecting power supply direction of the bidirectional switched mode power supply and a switch having an control pole coupled to the input. The switch is adapted to change the main circuit of the bidirectional switched mode power supply based on the selected power supply direction. | 2015-10-01 |
20150280584 | System and Method for a Switched-Mode Power Supply - In accordance with an embodiment, a method of operating a switched-mode power supply includes detecting a voltage decrease in a secondary winding of a transformer by detecting a first voltage transient using a sensor capacitively coupled to the secondary winding of the transformer. A secondary switch coupled to the secondary winding of the transformer is turned on based on when the first voltage transient is detected. | 2015-10-01 |
20150280585 | SWITCHING POWER-SUPPLY DEVICE - Disclosed is a switching power-supply device that induces a pulse voltage in a secondary winding of the transformer, and outputs, to a load, an output voltage rectified and smoothened by a secondary-side rectification smoothing circuit including a rectifier diode and a smoothing capacitor. An input-voltage detection circuit detects the input voltage of the alternating-current power supply. An error amplifier compares the output voltage with a reference voltage, and transmits a resultant error voltage to a primary side as a feedback signal. An internal oscillation circuit selects any of frequency decrease settings according to the input voltage detected by the input-voltage detection circuit, and performs, by using the selected frequency decrease setting, a frequency decreasing function of decreasing a switching frequency of the switching element at a light load, in response to the feedback signal transmitted from a secondary side to inform a state of the load. | 2015-10-01 |
20150280586 | POWER SWITCHING CONVERTER - A power switching converter includes a switch coupled to an input terminal through a primary winding of a transformer and a control circuit configured to drive the switch to provide a regulated output signal at a secondary winding of the transformer. A wake up circuit is provided to force the switching-on of the switch when the power converter enters in a burst mode. The wake up circuit includes a transmitting section coupled to the secondary winding and a receiving section coupled to an auxiliary winding of the transformer and the control circuit. The transmitting section is configured to provide a wake up signal communicated in a wireless manner to the receiving section when the output signal falls below a threshold value. | 2015-10-01 |
20150280587 | Leakage Reduction Circuit - A leakage reduction circuit is described herein that is configured to reduce high voltage leakage that may occur in electrical power step-down scenarios. The leakage reduction circuit, for instance, may be employed in a power adapter for a client device, such as a mobile computing device. For example, a power adapter may include a high voltage alternating current (AC) input, and circuitry for converting the AC input into lower voltage direct current (DC) for output to a client device. Implementations of the disclosed leakage reduction circuit include an arrangement of capacitors that provides a noise return path (e.g., for common mode noise) in a power adapter, while reducing high voltage leakage that may occur from a high voltage AC input to a lower voltage DC output of the power adapter. | 2015-10-01 |
20150280588 | POWER CONVERTERS - A power converter comprising: an input portion; a forward converter output portion with a ripple steering element; and a flyback converter output portion with a ripple steering element, wherein the input portion, forward converter output portion and flyback converter output portion are combined in an isolated magnetic configuration sharing a single transformer. | 2015-10-01 |
20150280589 | DC-DC Converter - A DC-DC converter includes a first half-bridge circuit, a second half-bridge circuit, at least one transformer having at least one primary winding and at least one secondary winding, wherein the first and second half-bridge circuits are designed to generate an AC voltage at the at least one primary winding, and a rectifier circuit having an output terminal. The output terminal includes a first output terminal pole and a second output terminal pole. The rectifier circuit includes at least one rectifier element. The rectifier circuit is designed to rectify a voltage present at the at least one secondary winding and to output it at the output terminal. The rectifier circuit includes a polarity reversal protection transistor, the collector-emitter path of which or the drain-source path of which is looped in between a terminal of the at least one rectifier element and the first or the second output terminal pole of the output terminal. | 2015-10-01 |
20150280590 | CONTROL CIRCUIT AND CONTROL METHOD OF DIGITAL CONTROL POWER SUPPLY CIRCUIT, AND DIGITAL CONTROL POWER SUPPLY CIRCUIT, ELECTRONIC DEVICE AND BASE STATION USING THE SAME - A control circuit of digital control power supply circuit includes: first filter generating detection voltage having voltage level based on time average of output voltage of the digital control power supply circuit; A/D converter sampling feedback voltage having voltage level based on the output voltage at peak or bottom of the output voltage and converting the sampled feedback voltage into digital feedback data, and converting the detection voltage into digital detection data; error detector generating error data indicating difference between the feedback data and target data indicating target value of the feedback voltage; compensator generating duty command value adjusted to make the error data approximate zero; digital pulse modulator receiving the duty command value and generating pulse signal having duty ratio corresponding to the duty command value; and correction unit correcting the target data based on difference between the detection data and the feedback data. | 2015-10-01 |
20150280591 | POWER CONVERSION APPARATUS - A power conversion apparatus for converting AC power supplied from an AC power source to DC power includes an AC-DC conversion circuit connected with the AC power source at an input end thereof for converting the AC power to DC power, a DC-DC conversion circuit connected with an output end of the AC-DC conversion circuit at an input end thereof for converting DC voltage level of the DC power generated by the AC-DC conversion circuit, a smoothing capacitor parallel connected to the output end of the AC-DC conversion circuit and the input end of the DC-DC conversion circuit, a DC link voltage detector for detecting a voltage of the smoothing capacitor as a DC link voltage, and a control unit for controlling operation of the DC-DC conversion circuit. The control unit suppresses output power of the DC-DC conversion circuit if the DC link voltage is | 2015-10-01 |