Class / Patent application number | Description | Number of patent applications / Date published |
310214000 | Coil retainers or slot closers | 76 |
20080203844 | Slot Seal - The invention relates to a slot seal for an electric machine ( | 08-28-2008 |
20090045692 | Capped stator core wedge and related method - A slot wedge for a generator stator includes a wedge body having top and bottom surfaces and a pair of oppositely inclined side surfaces, wherein at least the oppositely inclined surfaces are covered with a woven aramid fabric. A related method includes the steps of: (a) providing a wedge shaped body having top and bottom surfaces connected by oppositely inclined side surfaces; and (b) covering at least the oppositely inclined side surfaces with a woven aramid fabric. | 02-19-2009 |
20090066182 | STATOR WINDING ASSEMBLY AND METHOD - Disclosed herein is an electric machine stator. The electric machine stator includes a tubular body with a plurality of radial slots formed into a perimetrical surface thereof, each of the plurality of slots having a width that varies over at least a portion of a radial depth of the slot such that the slot width is narrower near the perimetrical surface than the slot width further from the perimetrical surface. The stator further includes at least one winding positioned within each of the plurality of slots and at least one of the at least one winding is deformed within the slot such that at least one dimension of the at least one winding is greater than a narrowest slot width dimension thereby retaining the winding within the slot. | 03-12-2009 |
20090079289 | System and Method with a Rotor Having Parallel Sided Rotor Bars - The present invention relates generally to motor rotors. More particularly, the invention encompasses a motor rotor having at least one rotor bar. The invention also includes a system and method with a rotor having parallel sided rotor bars. The rotor bar preferably has a core and at least one layer of a rotor bar shim. | 03-26-2009 |
20090085421 | Rotating Electrical Machine and Method for Manufacturing the Same - A rotating electrical machine includes: a stator that has a stator core and a stator coil; and a rotor disposed rotatably on an inner circumferential side of the stator core. The stator core includes a plurality of slots opening on the inner circumferential side and the slots are each formed as an open slot with a width of an inner circumferential-side opening thereof ranging along a circumferential direction set substantially equal to or greater than a width of a bottom side measured along the circumferential direction. The stator further includes a slot insulator disposed between inner wall of each of the slots at the stator core and the stator coil and a holding member constituted with a nonmagnetic material and inserted in each of the slots at the stator core so as to hold the slot insulator between two side surfaces present along the circumferential direction at the slot. The stator is formed by winding the stator coil through the plurality of slots. | 04-02-2009 |
20090127967 | METHODS FOR FABRICATING A WEDGE SYSTEM FOR AN ELECTRIC MACHINE - A method for assembling an electric machine is provided. The method includes providing a rotor having a cavity formed therein. At least one contoured recess is formed in a portion of the cavity. A wedge is inserted into the cavity. The wedge includes at least one contoured protrusion that is configured to mirror the at least one contoured recess of the cavity. The wedge is inserted such that the at least one contoured protrusion is positioned within the at least one contoured recess to facilitate positioning the wedge within the cavity. The at least one contoured protrusion and the at least one contoured recess are shaped to facilitate minimizing stresses within the rotor and the wedge. | 05-21-2009 |
20090127968 | ELECTRICAL MACHINE WITH AN END-SIDE DEFLECTION OF ELECTRICAL CONDUCTORS - Disclosed is an electric machine comprising a rotational shaft and a base that is provided with two axial faces and grooves for accommodating electrical conductors ( | 05-21-2009 |
20090152976 | DYNAMO-ELECTRICAL MACHINE WITH TOOTH-WOUND COILS - A dynamo-electrical machine includes a stator with teeth which are aligned with respect to a rotor, wherein at least a predeterminable number of teeth are surrounded by a winding system which is arranged in slots. The slots which are formed by the teeth and designed to be open, are each closed by a slot sealing element which has an electrically non-conductive and magnetically non-permeable material in which a tooth head widening element is provided in the area of those tooth sections of the tooth heads which face the air gap. | 06-18-2009 |
20090195108 | STATOR FOR ELECTRIC MACHINE WITH IMPROVED EFFICIENCY AND THERMAL PERFORMANCE - A stator for an electric machine, comprising compacted and bonded windings and a ferromagnetic core including an active element and a cooling element. The compacted and bonded windings are inserted in slots between teeth in the active element, and the cooling element mates with the active element at the tips of the teeth to close the slots over the windings. | 08-06-2009 |
20090212654 | COIL FIXING MEMBER AND ROTARY ELECTRIC MACHINE - Each coil fixing member is placed between a stator coil and at least one end surface of a stator core in an electric rotary machine in order to suppress a displacement between the stator core and the stator coil. The coil fixing member consists of a spacer and a bolt. The bolt and a corresponding screw hole formed on an end surface of the stator core are used to fix the stator core in the electric rotary machine. The spacer consists of a main body part and a bolt fixing part. The bolt fixing part has a bolt hole. The main body part has a tapered shape. The main body part is placed between the end surface of the stator core and connection parts of windings of the stator coil, and fixed to the stator core by the bolt through the bolt hole of the bolt fixing part. | 08-27-2009 |
20090218905 | COIL FIXING MEMBER AND ELECTRIC ROTARY MACHINE - Coil fixing members are placed between a stator coil and at least one end surface of a stator core in an electric rotary machine in order to suppress a displacement between the stator core and the stator coil. Each coil fixing member has primary and secondary fixing members. The primary fixing member has a wedge-plate shape having a support part at one side of the circumferential direction of the stator core. The support part supports the connection part of the winding of the stator core. The primary fixing member is inserted from the inner side of the diameter direction of the stator core toward the outer side thereof between the connection parts of the windings of the stator coil and the end surface of the stator core. The secondary fixing member has a rod shape placed at the other side of the primary fixing member. | 09-03-2009 |
20090289519 | ELECTRIC ROTATING MACHINE - A lead conductor penetrating portion that bring out lead conductors to the inner diameter side is formed in a winding holding portion of a clamp ring for holding a rotor winding that overhangs from a rotor core, and furthermore a stopper is formed in a lead portion on the inner diameter side of the lead conductor, and a centrifugal force-resistant member for holding a centrifugal force acting on the lead conductor is interposed between the stopper and the inner diameter side of the winding holding portion. | 11-26-2009 |
20090289520 | STATOR FOR ROTARY ELECTRIC MACHINE - A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion. | 11-26-2009 |
20100038989 | INNER CROSS OVER SUPPORT CLIP - An inner crossover support clip may be used to support a crossover wire joining two adjacent rotor coils on a rotating machine, such as a generator. The support clip of the present invention may be capable of withstanding forces, such as centrifugal forces, that lead to the failure of conventional crossover wires. The support clip may be formed of a sheet material bent at an angle to form an inside surface thereon and may include a tie edge formed on each end of the sheet material. The tie edge attaches to adjacent rotor coils of a rotating machine and the inside surface supports a crossover wire electrically connecting the adjacent rotor coils. | 02-18-2010 |
20100079028 | Slot Wedges for Electrical Machines - A wound core assembly for an electrical machine comprising a stack of laminations defining a core having a plurality of poles, the wound core assembly further comprising at least one slot wedge, wherein the slot wedge comprises a first portion arranged between adjacent poles and at least one second portion protruding from the first portion and abutting an end face of the core in the region of at least one of the poles. The at least one second portion may apply axial pressure to the end face to reduce the tendency of the laminations to splay axially outwards. | 04-01-2010 |
20100090559 | ROTOR OF AN ELECTRICAL MACHINE WITH CORD LASHING - A rotor of an electrical machine has slots which are tapered on an inlet side, a machine winding having winding overhangs, a cord lashing which reaches over the winding overhangs, extends in the slots, and is formed by a cord, and at least one end of the cord is pressed by a filler element inserted in one of the slots in order to fix it in position in an interstice of the slot formed between the machine winding and the slot taper. | 04-15-2010 |
20100109469 | Capped stator core wedge and related method - A slot wedge for a generator stator includes a wedge body having opposite side edges adapted to engage complimentary stator core slots. At least the opposite side edges are covered with an aramid paper or woven aramid fabric material. | 05-06-2010 |
20100123365 | ARRANGEMENT FOR CLOSURE OF SLOTS - An exemplary slot closure arrangement has a sliding block and a pressure piece. At least one spring element is arranged in between them and can be prestressed by at least one attachment, which interacts with the sliding block and the pressure piece, thus creating a prefabricated assembly. Once the slot closure arrangement has been positioned in a slot, the attachment can be mechanically moved from a first position to a second position, which can be monitored, after positioning of the slot closure arrangement, for activation of the spring forces of the at least one spring element. | 05-20-2010 |
20100127592 | STATOR-SLOT WEDGE AND DYNAMOELECTRIC-MACHINE STATOR HAVING STATOR SLOTS AND WEDGES - A dynamoelectric-machine stator includes a stator lamination stack, a plurality of electrically-conductive magnetic wedges, a plurality of electrically-insulative nonmagnetic wedges, and coil windings. The stator lamination stack has circumferentially-spaced-apart stator teeth. Adjacent stator teeth each have a tooth side bounding an intervening stator slot. Adjacent stator teeth each have a radially-outermost tooth tip which circumferentially projects from the corresponding tooth side into the intervening stator slot to partially close the intervening stator slot. The coil windings are randomly wound in the stator slots. The magnetic wedges are each positioned in a corresponding stator slot and physically and solid-magnetically contact the corresponding tooth tips to fully close the corresponding stator slot proximate the corresponding tooth tips. The nonmagnetic wedges are each positioned in a corresponding stator slot between the corresponding coil windings and the corresponding magnetic wedge. A stator-slot magnetic wedge of particular shape is also described. | 05-27-2010 |
20100133946 | GENERATOR WEDGE WITH REDUCED EDDY CURRENT LOSSES - A wedge placed between adjacent coils in a generator comprises a wedge body having a generally triangular portion to be positioned at a radially inner location, and a radially outer portion. The radially outer portion includes ends that will be spaced at axial ends of the wedge when the wedge is positioned within a generator. The ends have a first surface spaced a first distance from an apex of the triangle. The end walls extend above the first surface at each of two spaced positions axially inwardly of the ends of the wedge. The end walls are connected to side walls that extend near circumferential edges of the wedge. An open pocket is formed within the wedge body at locations between the side walls and axially between the end walls. | 06-03-2010 |
20100156233 | STATOR IN ROTATING ELECTRIC MACHINE - A method of manufacturing a stator in a rotating electric machine. In this method, each slot has a slot peripheral wall and a slot opening, covered with an insulation coating made of an electrical insulation material. The slot peripheral wall SW has a slot bottom wall, a pair of slot side walls opposing to each other and continuing to end portions of the slot bottom wall. The insulation coating is formed continuously from the slot bottom wall to the pair of slot side walls, and a pair of holding grooves opposing to each other is formed in the insulation coating at the vicinity of the slot opening. The groove walls of the pair of the holding grooves are formed in the insulation coating, and an electrical insulation member to close the slot opening is inserted in the pair of holding grooves and held between the pair of holding grooves. | 06-24-2010 |
20100187942 | STATOR COIL RETENTION SYSTEM FOR UNVARNISHED STATORS - A downhole electric motor device has a longitudinally extending tubular housing; a stator part deployed within the tubular housing; a stator coil winding looped through the stator part with an end turn having an apex; and a connecting device connecting between at least one of the coil windings and an end of the housing adjacent to an end of the stator part, thereby supporting the coil winding. | 07-29-2010 |
20100194232 | SMALL AIR GAP AIR CORE STATOR - Stator for use in an electrical machine. A non-magnetic support frame section and a non-magnetic axial coil support are used to provide an air gap stator configuration. The present stators provide an air gap winding configuration that facilitates the fixing of stator coils in the air gap. The stator coils are located near the surface of the magnetic back iron and are separated from adjacent coils by non-magnetic structure. | 08-05-2010 |
20100194233 | AIR CORE STATOR INSTALLATION - Stator for use in an electrical machine. A non-magnetic support frame section and a non-magnetic coil support are used to provide an air gap stator configuration. The present stators provide an air gap winding configuration that facilitates the fixing of stator coils in the air gap, spaced apart from the magnetic back iron. | 08-05-2010 |
20100244614 | GENERATOR ROTOR WITH IMPROVED WEDGES - A wedge for use in a generator rotor includes a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body. A wedge and winding combination, a generator rotor, a generator and a method all using the wedges are disclosed and claimed. | 09-30-2010 |
20100270887 | STATOR WITH RESTRAINTS FOR RESTRAINING RELATIVE RADIAL MOVEMENT BETWEEN TURN PORTIONS OF ELECTRIC WIRES - A stator includes a stator core, a stator coil comprised of a plurality of electric wires, and at least one restraint. Each of the electric wires has a plurality of in-slot portions received in slots of the stator core and a plurality of turn portions that are located outside of the slots to connect the in-slot portions. The restraint is mounted to end parts of the turn portions belonging to a turn portion group of the electric wires to restrain relative radial movement between the turn portions of the turn portion group. All the turn portions of the turn portion group protrude from the same slot of the stator core. The end parts of the turn portions respectively adjoin the in-slot portions of the electric wires received in the same slot of the stator core and align with each other in a radial direction of the stator core. | 10-28-2010 |
20100308685 | ELECTRIC MOTOR ROTOR - A rotor for use in an electrical motor which includes an anti-expansion ring centrally mounted on the rotor to restrict the extent rotor elements mounted on a rotatable shaft may expand outward due to centrifugal forces generated when the motor is operated. Such motors are suited for use in high rotational speed environments such as electrically controlled turbochargers. | 12-09-2010 |
20110001385 | BRUSHLESS MOTOR - Disclosed is a brushless motor which allows easy positioning of an air core coil and facilitates quick assembling of the coil because the air core coil is positioned by fitting an air core portion of the air core coil to bosses formed in a coil plate. Moreover, since no jig is required for the positioning of the coil, the positional precision of the coil can be stably attained, thereby enhancing the positional precision of the coil. Furthermore, although the positioning of the coil becomes difficult as the coil is reduced in size, the present invention is capable of easily coping with the thinning and miniaturization of the coils, i.e., thinning and miniaturization of the motor. In addition, the thinning and miniaturization of the motor can also be attained by arranging a circuit board and a coil plate in parallel to each other. | 01-06-2011 |
20110012473 | END COIL TIE DOWNS - A submersible electric pump motor comprises an unvarnished stator structure having stator windings formed of conductors. The stator windings form end coils at each end of the stator for each phase. The end coils are tied to three arc-shaped, metal segments, each having an opening and positioned circumferentially within a circumferential groove. The metal segments are welded to the interior of the housing to provide a rigid surface. High temperature strings are wound through the openings in each metal segment and around the end coils for each phase to tie each end coil of that phase to that metal segment. This prevents the end coils of each phase from twisting during startup, sliding into the slots, and moving inwards towards a rotating rotor. | 01-20-2011 |
20110012474 | Electrical device component - This invention relates to an improved process for removing conductors and electrical insulation parts from electrical device components so that these devices can be refurbished with new insulation and conductors. This invention also relates to an electrical device component having an electrical winding support, a laminate electrical insulation part, an electrical conductor, and an encapsulating resin, that has a special laminate electrical insulation part that allows more efficient and environmentally friendly refurbishing. | 01-20-2011 |
20110095640 | LOCKING WEDGE FOR MAINTAINING A WINDING IN A SLOT AND DYNAMOELECTRIC MACHINE INCORPORATING SAME - A locking wedge for a slot of a dynamoelectric machine is provided. The locking wedge has a main body extending in an axial direction, and includes a top and a bottom surface. The bottom surface has a greater surface area than the top surface. A first end surface faces towards an axial-inward direction and a second end surface faces towards an axial-outward direction. A locking slot extends in the axial direction into a portion of the main body, and begins in the second end surface and extends axially inward. A locking member is disposed to fit into the locking slot, and is inserted into the locking slot to lock the locking wedge in the slot. | 04-28-2011 |
20110109187 | KEY BAR COMPRESSION APPARATUS - Solutions for reducing key bar rattle in dynamoelectric machines are disclosed. In one embodiment an apparatus includes: a plurality of key bars operably coupling a stator core to a stator wrapper in which the stator core is at least partially contained; a cable surrounding the plurality of key bars; and at least one anchor device connecting a portion of the cable to the stator wrapper to produce a compressive load on at least one of the plurality of key bars by tightening the cable around the plurality of key bars. | 05-12-2011 |
20110121678 | DYNAMOELECTRIC MACHINE LOCKING WEDGE FOR MAINTAINING A WINDING IN A SLOT - A locking wedge for a slot of a dynamoelectric machine is provided. The locking wedge includes a main body extending in an axial direction. The main body has a top surface and a bottom surface with a greater surface area than the top surface, and a first end surface and a second end surface opposed to the first end surface. First and second locking slots extend in the axial direction into a portion of the main body. The first locking slot begins in the first end surface and the second locking slot begins in the second end surface. A first locking member is disposed to fit into the first locking slot, and a second locking member is disposed to fit into the second locking slot. The first and second locking members can be inserted into the first and second locking slots, respectively, to lock the locking wedge in the slot. | 05-26-2011 |
20110175485 | ROTATING ELECTRICAL MACHINE AND MANUFACTURING METHOD OF A STATOR THEREOF - A rotating electrical machine includes: a rotor to which a plurality of magnetic poles are provided along its circumferential direction; a stator core laminating a plurality of core plates, and having a cylinder portion with teeth extending radially outwards; and a stator coil received in a slot between the teeth; wherein each of the teeth includes: a tooth body portion extending radially outwards from the cylinder portion; and a pair of projecting end portions, provided at an end of the tooth body portion, that are in radially extended state before receiving the stator coil in the slot, and that are in curved state in which they are bent in circumferential direction after receiving the stator coil in the slot; and wherein, in the curved state, a vacant space is defined at the slot side of a curved portion that communicates the base portion and the projecting end portion. | 07-21-2011 |
20110215669 | Rotor Assembly - A rotor assembly comprises a rotor body defining a pole, a winding encircling the pole, a compression member located radially inwards of the winding, and compression means located between the compression member and the rotor body and operable to urge the compression member in an outward direction to apply a compressive load to the winding. A method of assembly of the rotor is also disclosed. | 09-08-2011 |
20110215670 | TIGHTENING DEVICE FOR END WINDING SUPPORTS OF AN ELECTRIC GENERATOR - The tightening device ( | 09-08-2011 |
20110291518 | ROTOR ASSEMBLY FOR A GENERATOR OR A MOTOR - A rotor assembly for a generator includes a rotor hub, a first rotor pole, a second rotor pole, and an element (e.g., wedge). Each rotor pole extends from the rotor hub, and includes a winding of conductive wire coupled thereto and a pole head. The pole head is positioned on an end of the rotor pole opposite to the hub, and the pole head has an arcuate outer periphery. The element is positioned between the first and second rotor poles, and includes an open volume and an aperture. The open volume is formed in the element, and is positioned proximate to the windings of the first and second rotor poles. The aperture is on an outside portion of the element, and provides access to the open volume such that air may travel to and from the open volume for cooling of the rotor assembly. The outside portion of the element is substantially flush with at least one of the pole heads, and is contoured to continuously extend the arcuate outer periphery of the at least one of the pole heads. | 12-01-2011 |
20120032551 | STATOR FOR ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING THE SAME - A stator includes a ring-shaped stator core having a plurality of slots arranged in a circumferential direction and a stator coil wound around the slots. The stator coil disposed within the slots is fixed by an impregnating material applied from an inner peripheral side of the stator core. An innermost-diameter coil wire of the stator coil positioned on the innermost-diameter side within the slots is provided with a first angle section that is angled towards an outward core-diameter direction side from a center section in a core-axis direction towards one end side, and a second angle section that is angled towards the outward core-diameter direction side from the center section in the core-axis direction towards another end side. The center section in the core-axis direction of the innermost-diameter coil wire projects towards an inward core-diameter direction side. | 02-09-2012 |
20120091851 | Rotary Electric Machine - A rotary electric machine comprises a rotor rotatable within a stator assembly, the stator assembly comprising a stator body defining a plurality of stator slots accommodating electrical conductors, a slot liner being provided within each slot to provide electrical insulation between the stator body and the electrical conductors, wherein each slot liner protrudes from an end of the stator slot and carries an armour element to protect the slot liner and associated conductors from erosion whilst permitting efficient cooling. | 04-19-2012 |
20120112597 | DYNAMO-ELECTRIC MACHINE COMPONENT WINDING METHODS AND APPARATUS - Stator designs have wide-mouth slots between adjacent poles. Wire coils with high slot fill conductivity are formed around the poles. In some designs, the wire coils are wave wound around the poles. Thick bar conductors can be used for making the wire coils. The wire coils may be inserted using nozzle dispensers or transferred from a pre-form mandrel. In other designs, the wire coils are pre-formed on transferable pockets that are then mounted on the poles. Optional pole extensions or shoes can be attached to the stator poles after the wire coils are formed around the poles. | 05-10-2012 |
20120133237 | WEDGE FOR A STATOR OF A GENERATOR WITH PREFORMED COIL WINDINGS - A wedge for a stator of a generator with preformed coil windings includes a retaining portion for retaining coil windings. The retaining portion covers at least part of two neighbouring stator slots. A mounting projection at a bottom surface of the retaining portion for mounting the wedge to a top surface of a stator tooth is located between the two neighbouring stator slots. | 05-31-2012 |
20120133238 | STATOR - A stator includes a stator core, slots, coils, an interphase insulation sheet, and wedges. The interphase insulation sheet is provided between coil ends of adjacent coils having different phases among the coils. The interphase insulation sheet includes a first sheet body portion, a second sheet body portion, and a first bridge portion. The first and second sheet body portions respectively have first and second retaining pieces. The first retaining piece projects from the first sheet body portion toward the second sheet body portion in the developed state of the interphase insulation sheet. The second retaining piece projects from the second sheet body portion toward the first sheet body portion in the developed state of the interphase insulation sheet. The first and second retaining pieces are retained by projecting portions of the wedges. | 05-31-2012 |
20120169172 | METHOD FOR MANUFACTURING A STATOR AND A STATOR BAR, STATOR AND STATOR BAR - A method for manufacturing a stator bar includes providing a conductor with an insulation around it, and wrapping an expandable tape around the insulation. The stator bar can be used to manufacture a stator. | 07-05-2012 |
20120181893 | STATOR FOR ELECTRIC ROTATING MACHINE AND METHOD OF MANUFACTURING THE SAME - A stator includes a hollow cylindrical stator core having stator teeth and slots. The stator teeth each extend radially inward and are circumferentially spaced from one another. Each of the slots is formed between one circumferentially-facing pair of the stator teeth and opens at the radially inner periphery of the stator core. Each of the stator teeth has a distal end portion that includes a slit, a base part and an oblique part. The slit is formed in a distal end surface of the stator tooth and extends axially. The base part and the oblique part are formed respectively on opposite circumferential sides of the slit. The base part extends radially inward to have a distal end surface that makes up an inner-diameter surface of the stator core. The oblique part is bent toward an adjacent slot so as to extend obliquely with respect to the base part. | 07-19-2012 |
20120228986 | ROTOR FOR ROTATING ELECTRIC MACHINE AND MANUFACTURING METHOD THEREOF - A rotor for a rotating electric machine, having at least a pair of cavities with a bottom wall from which a first lateral wall and a second lateral wall extend transversally, wherein each cavity is suitable for receiving therein a respective lateral portion of a winding of the rotor through an insertion opening that extends facing the bottom wall from the first lateral wall to the second lateral wall. The rotor includes blocking means suitable for blocking the lateral portions of the winding in the respective pair of cavities by operatively coupling with coupling means defined in the rotor. | 09-13-2012 |
20120267979 | ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING SAME - A rotary electric machine includes a plurality of lead end holding grooves defined in insulators at an outer circumferential surface of a stator core, for guiding respective ends of coil leads therein. The lead end holding grooves are defined by ledges of the insulators. The ledges have respective lands which are convex in widthwise directions of the lead end holding groove. | 10-25-2012 |
20120293037 | COIL FIXING MEMBER OF ROTATING ELECTRICAL MACHINE, AND ROTATING ELECTRICAL MACHINE - A coil fixing member of a rotating electrical machine, wherein the rotating electrical machine includes a ring-shaped stator core, a slot formed at inner peripheral section of the stator core, a coil arranged in the slot, and wall sections defining opening on an inner periphery of the slot in a radial direction of the stator core, and wherein the coil fixing member is inserted into the slot, the coil fixing member comprising: a pressing section that presses the coil outward in the radial direction of the stator core; and engaging sections that are adjacent to both end sections of the pressing section in a peripheral direction of the stator core, that extend from the both end sections to an inward side in the radial direction of the stator core, and that include leading end sections respectively engaged with the wall sections. | 11-22-2012 |
20120319525 | SIDE RIPPLE SPRING - A ripple spring is provided having one or more layers laminated together, where the one or more layers form a symmetrical stack. | 12-20-2012 |
20130020900 | ELECTROMECHANICAL APPARATUS, ROBOT, AND MOVING BODY - An electromechanical apparatus includes: a rotor including a central shaft and permanent magnets disposed around a cylindrical surface along an outer circumference of the central shaft, and a stator including hollow electromagnetic coils disposed around a cylindrical surface along an outer circumference of the permanent magnets and a pipe member having a hollow cylindrical shape and disposed between the permanent magnets and the electromagnetic coils, wherein the pipe member is made of a carbon fiber reinforced plastic, and the carbon fiber reinforced plastic is formed by weaving carbon fiber bundles formed of bundled carbon fibers. | 01-24-2013 |
20130057107 | PERMANENT MAGNET MOTORS AND METHODS OF ASSEMBLING THE SAME - A method for manufacturing a permanent magnet motor is described herein. The method includes fabricating a stator core to have a skew based on a least common multiple of a number of rotor poles and a number of stator teeth, installing windings about teeth of the skewed stator core to generate a wound stator core, and positioning a permanent magnet rotor with respect to the wound stator core. | 03-07-2013 |
20130069477 | METHOD OF FABRICATION OF PERMANENT MAGNET MACHINES WITH MAGNETIC FLUX REGULATION - A method of forming a flux regulated machine includes winding stator windings into slots in an outer core. The outer core is formed to have a plurality of radially inwardly extending tooth pieces that are circumferentially spaced, and which define the slots. Further, control coils are wound around an inner core. Then, the inner core is inserted within the outer core such that the tooth pieces contact the inner core, and such that the control coils close off the slots at a radially innermost position. A flux regulated permanent magnet machine generally made according to this method is also disclosed. | 03-21-2013 |
20130113332 | INSULATOR, MOTOR AND METHOD FOR MANUFACTURING STATOR INCLUDING INSULATOR AND COIL - Provided are an insulator including a flange to prevent a coil from coming out, and a method for manufacturing a stator including an insulator and a coil, the insulator being configured not to let the flange interfere with the coil when the coil is fitted to the insulator and not to generate any damage at the insulator during the fitting. An insulator | 05-09-2013 |
20130154431 | Systems and Methods for Wire Containment Within an Electric Motor - Systems and methods for the construction of electric motors, where expandable material is inserted into the slots in which magnet wires are positioned and expanded in the slots to mechanically restrain the wires. One embodiment comprises a downhole electric motor such as might be used in an electric submersible pump (ESP) system. The motor has a stator with multiple slots in which magnet wires are positioned. A slot liner is positioned in each slot and an expansion pad is positioned in each slot between the slot liner and the slot wall nearest the bore of the stator. The wires are positioned inside the slot liner. When the motor is almost completely assembled, it is filled with oil. Some of the oil is absorbed by the expansion pads, which then expand to fill the unoccupied volume in the slots, thereby restraining the movement of the wires within the slots. | 06-20-2013 |
20130200745 | STATOR MAGNET WIRE END COIL RETENTION SYSTEM - The invention includes a retention system and method for stator magnet wires. In embodiments, the retention system includes a packing ring that can swell to a larger size following installation. In embodiments, the lubricant used in the motor causes the packing ring to swell. When the packing ring swells, it exerts pressure against the end turns of the stator magnet wires, and can contour to the shape of the wires so that there are no pressure points on the wires. A rigid support ring can be positioned concentric with the packing ring so that the packing ring does not swell toward the axis of the motor housing. | 08-08-2013 |
20130257217 | WINDING FRAME WITH MAGMATE AND STATOR CORE WITH THE SAME - The present invention relates to a stator core including at least two or more stator core-continuous bodies each formed by coupling at least two or more unit cores to each other, each unit core consisting of a tooth portion having a coupling slot and a coupling projection formed along both ends thereof and connected to adjacent unit core by means of a connection portion formed at each of both end portions of the tooth portion, wherein the at least two or more stator core-continuous bodies are fitting-connected to each other by means of the coupling slots formed at one side ends thereof and the coupling projections formed at the other side ends thereof to form the stator core having a round shape. | 10-03-2013 |
20130293055 | AIR-COOLED GENERATOR ROTOR WITH IMPROVED WEDGES - A wedge for use in a generator rotor has a wedge body with a central radially top surface of the wedge body, formed with a plurality of blades. At least some of the plurality of blades extend at an angle such that a plane defined through the blades will be non-perpendicular to a rotational axis of the rotor that will receive the wedge. | 11-07-2013 |
20130300248 | EXPANSION SHEET FOR ROTARY ELECTRIC MACHINE, STATOR FOR ROTARY ELECTRIC MACHINE USING THE SAME, AND MANUFACTURING METHOD OF STATOR FOR ROTARY ELECTRIC MACHINE - In an expansion sheet for a rotary electric machine that has a thermal expansion property and is to be arranged between a core and a coil conductor in a slot in the rotary electric machine, in which the coil conductor is housed in the slot formed in the core, the expansion sheet has a first surface and a second surface and includes: a first surface-side portion; and a second surface-side portion that is closer to the second surface than the first surface-side portion, wherein an amount of volume increase, caused by heating, of the first surface-side portion is higher than an amount of volume increase, caused by the heating, of the second surface-side portion. | 11-14-2013 |
20130320800 | COIL FIXING DEVICE FOR FIXING COIL TO ELECTRIC MOTOR, AND ELECTRIC MOTOR HAVING THE COIL FIXING DEVICE - A coil fixing device capable of accurately positioning and fixing a coil to a slot of a stator core of an electric motor, and an electric motor having the fixing device, while not using adhesive and having a structure not affecting the characteristic of the electric motor. A positioning member of the fixing device has a coupling member positioned at an axial end of the stator core; a plurality of protruding portions connected to the coupling member at the same angular intervals as the coils, each protruding portion radially inwardly extending from the coupling member; and a latching portion connected to a front end of each protruding portion, the latching portion extending from the front end of each protruding portion in a direction across an extending direction of the protruding portion. | 12-05-2013 |
20140001913 | APPARATUS TO SUPPORT SUPERCONDUCTING WINDINGS IN A ROTOR OF AN ELECTOMOTIVE MACHINE | 01-02-2014 |
20140028145 | MAGNETIC WEDGE - A magnetic wedge comprises a first element of magnetic material extending longitudinally along a first direction and second element of non-magnetic material coupled to the first element and having at least one skew portion relative to the longitudinal extension direction of the wedge. | 01-30-2014 |
20140091669 | Generator/Motor Wedge With Lamination Interface for Reduced Stress Levels - A wedge for use in an electric machine has a central leg extending in a direction that will be radially inward when the wedge is mounted on a lamination stack, The wedge has arms extending in both circumferential directions from the central leg, with a circumferentially outermost part of the arms having a curved surface that will be radially outward, and a flat inner surface that will be radially inward when the wedge in mounted in the lamination stack. A generator/motor rotor and a generator/motor are also disclosed. | 04-03-2014 |
20140091670 | ELECTRIC MOTOR - An electric motor includes a stator, a case surrounding the stator, and a rotor rotatably disposed with respect to the stator. The rotor includes a rotor core having a plurality of poles and slots, a shaft coupled to a central portion of the rotor core, a rotor coil wound on the rotor core, and coil supporting members provided at the rotor core. The coil supporting members are configured to support the rotor coil such that the rotor coil is prevented from being separated from the rotor core in a radial direction when the rotor rotates. Under such a configuration, a short-circuit of the rotor coil due to a centrifugal force when the rotor rotates, can be prevented. | 04-03-2014 |
20140152141 | STATOR OF ELECTRIC MOTOR | 06-05-2014 |
20140159537 | ASYNCHRONOUS MACHINE - The invention concerns an asynchronous machine having a slip-ring rotor for use with a variable rotational speed, with
| 06-12-2014 |
20140175935 | ROTARY ELECTRIC MACHINE - A motor-generator that is a rotary electric machine includes a cylindrical stator core having a plurality of teeth that are arranged spaced apart from each other in a circumferential direction and extend in a radial direction; a cassette coil arranged on an outer periphery of each of the teeth; an insulator that has a pawl portion and is interposed between the stator core and the cassette coil; and a wedge that is provided extending between the cassette coils that are adjacent to each other, which fixes the cassette coils with respect to the stator core. The wedge is retained by the pawl portions of the insulators that are adjacent to each other. | 06-26-2014 |
20140210302 | MOTOR FOR USE IN REFRIGERANT ENVIRONMENT - A motor for use within a refrigerant atmosphere includes a plurality of laminations stacked along an axis, the laminations cooperating to define a plurality of teeth and a slot disposed between each pair of adjacent teeth, a plurality of coils each positioned around a tooth such that each coil is partially disposed in two adjacent slots, and a first phase winding formed from at least two coils, the first phase winding including a single continuous conductor. An insulating member is disposed within each of the slots and arranged to electrically insulate the coil within the respective slot from the laminations and a wedge is positioned within at least one of the slots. The wedge is operable to compress the coil within the slot. A rotor is positioned adjacent the stator and is operable to rotate about the axis. | 07-31-2014 |
20140300240 | ELECTRIC MACHINE ROTOR - A wedge for a rotor of an electric machine includes a circumferentially outer surface defining a radial extent of the wedge extending from a first axial end of the wedge to a second axial end of the wedge. A plurality of circumferentially-extending grooves extend radially inwardly from the circumferentially outer surface to a groove depth. The plurality of grooves are axially spaced along a wedge length between the first axial end and the second axial end. The axial spacing between the grooves is greater than an axial width of each groove. An intermediate surface between adjacent grooves has a same radial position as a first end surface between the first axial end and a first groove closest to the first axial end. Two planar side surfaces circumferentially bound the circumferentially outer surface and extend radially inwardly from the cicumferential outer surface. | 10-09-2014 |
20140319958 | COIL RETAINER FOR ELECTRIC MACHINE ROTORS - A coil retainer for a rotor includes a flat body and a longitudinal spine. The flat body has a first thickness and the longitudinal spine has a second thickness greater than the first thickness. The coil retainer may also include a central rib, which has a third thickness. The central rib runs laterally relative to the flat body and the third thickness of the central rib is greater than the first thickness. | 10-30-2014 |
20150054376 | Systems and Methods for Electric Motor Construction - Systems and methods for constructing a stator for use in downhole equipment such as ESP systems, where granulated filler material is used instead of encapsulants to provide mechanical support to the stator windings, provide electrical insulation in the stator slots, and conduct heat away from the windings. In one embodiment, a stator for an electric motor includes a plurality of laminations stacked together to form a stator core. Stator windings are positioned in slots within the stator core. The stator core and windings are installed in a stator housing, and a solid, granular filler material is used to fill an unoccupied volume within the slots. Retainer fittings are secured to the stator to retain the granulated filler material in the slots. | 02-26-2015 |
20150061452 | COIL INSULATING STRUCTURE OF ELECTROMAGNETIC MOTOR STATOR - A coil is wound via an electrically insulating member within a slot of a stator core of an electromagnetic motor which is formed of a stator and a rotor. Groove portions are formed to oppose one another in respective opposing portions of a slot opening portion side of the electrically insulating member. An electrically insulating sheet is disposed by being inserted into the pair of groove portions. | 03-05-2015 |
20150076954 | WEDGE FOR STATOR HAVING OVERMOLDED INSULATION - A stator for use in an electric motor is disclosed. The stator comprises an annular core, a plurality of wedges, and a plurality of wedge-retaining structures. The core includes a plurality of arcuately spaced apart teeth. Each of the teeth includes a generally radial leg and a head projecting from the leg to present a pair of arcuately spaced apart head ends. A slot opening is defined between the opposed head ends of each adjacent pair of teeth. Each of the wedges is received within a corresponding slot opening. Each wedge-retaining structure is at least in part fixed relative to the core and cooperates with a respective one of the wedges to compressibly retain the respective wedge between the head ends. | 03-19-2015 |
20150326085 | ROTOR FOR WOUND-ROTOR INDUCTION MOTOR HAVING ANTI-SPATTERING MEMBERS - Provided is a rotor for a wound-rotor induction motor having anti-spattering members. The rotor includes: a core that includes a base part having a hollow into which a shaft of the rotor is inserted, a plurality of winding parts that extend outward from a circumference of the base part and are spaced a predetermined distance from one another, and a plurality of panel parts that are provided at ends of the winding parts and are wider than the winding parts; coils wound around the winding parts; and anti-spattering members which are in contact with the panel parts and each of which is provided between the pair of winding parts adjacent to each other and prevents the coils adjacent to each other from spattering. | 11-12-2015 |
20160065022 | WINDING ARRANGEMENT AND METHOD FOR PRODUCING A WINDING ARRANGEMENT - A winding arrangement in a machine component for a rotary electrical machine ( | 03-03-2016 |
20160072352 | ARMATURE OF ROTATING ELECTRIC MACHINE WITH IMPROVED WEDGES - The present disclosure provides an armature of a rotating electric machine. The armature of the rotating electric machine includes a wedge that is configured to close an opening of a slot around which coils are wound and support the coils disposed to a left side and a right side of the slot to prevent the coils from seceding from a core. The wedge includes a main plate that has a substantially V-shaped section. In addition, a support plate of the wedge is coupled with the main plate within the main plate and is configured to support the main plate in directions in which the main plate spreads to maintain a shape of the main plate. | 03-10-2016 |
20160149445 | ROTOR OF WOUND ROTOR SYNCHRONOUS MOTOR - A rotor of a wound rotor synchronous motor is spaced apart from an interior diameter surface of a stator by a predetermined gap, and includes a plurality of teeth wound by a rotor coil, and circumferentially spaced apart from each other by a distance, where a slot is formed between the teeth, each tooth is formed with a shoe facing an interior diameter surface of the stator, and both ends of the shoe protrude in a direction of both ends of an adjacent shoe, where each tooth includes a first part corresponding to a winding body of the tooth and a second part extending in the direction of both ends of the adjacent shoe from both sides of the first part. | 05-26-2016 |
20180026488 | INDUCED POLARIZATION AC MOTOR | 01-25-2018 |