Patent application number | Description | Published |
20120104756 | METHOD FOR OPERATING A WIND TURBINE - The invention concerns a method of operating a wind power installation. The wind power installation has a circuit for measuring the frequency prevailing in the electrical supply network connected to a control device for controlling operation of the wind power installation. It is proposed that the power delivered by the generator of the wind power installation to the network is increased quickly and for a short period above the currently prevailing power of the wind power installation if the network frequency of the electrical network is below the desired target frequency of the network by a predetermined frequency value. | 05-03-2012 |
20120169059 | METHOD AND DEVICE FOR MONITORING THE STATE OF A NETWORK - The present invention concerns a method of detecting electric variables of a three-phase AC network having a first, a second and a third phase, including the steps of measuring a respective voltage value of the first, second and third phases in relation to a neutral conductor at a first moment in time, transforming the three voltage values of the first moment in time into polar co-ordinates with a voltage amplitude and a phase angle, repeating measurement and transformation for at least one further moment in time, and determining the currently prevailing frequency, voltage amplitude and/or phase angle of at least one of the phases from the voltage values transformed into polar co-ordinates. | 07-05-2012 |
20130043825 | ELECTRICAL STORAGE APPARATUS - The present invention concerns a charging apparatus for charging electric storage devices of electric vehicles including a feed-in unit for feeding electric energy into an electric ac voltage network including an electric dc voltage intermediate circuit for the intermediate storage of electric energy with an intermediate circuit voltage, and an inverter for converting a direct current of the dc voltage intermediate circuit into an alternating current, for feeding it into the electric ac voltage network and for converting an alternating current from the ac voltage network into a direct current for feeding it into the dc voltage intermediate circuit, and at least one electric storage charge circuit for at least partial charging of one of the electric storage devices from the dc voltage intermediate circuit and for at least partial discharging of one of the electric storage devices into the dc voltage intermediate circuit. | 02-21-2013 |
20130106108 | METHOD FOR THE OPERATION OF A WIND TURBINE | 05-02-2013 |
20140084587 | WIND TURBINE GENERATOR SYSTEM AND METHOD FOR OPERATING A WIND TURBINE GENERATOR SYSTEM - The present invention concerns a method of controlling a wind power installation connected to an electric network having a generator with an aerodynamic rotor with an adjustable rotary speed, in which the wind power installation can be operated at an operating point which is optimum in relation to prevailing wind conditions at an optimum rotary speed, wherein the wind power installation is operated for a transitional period of time or lastingly at a non-optimum operating point at a non-optimum rotary speed and the non-optimum rotary speed is higher than the optimum rotary speed. | 03-27-2014 |
20140254216 | METHOD AND APPARATUS FOR FEEDING ELECTRICAL CURRENT INTO AN ELECTRICAL POWER SUPPLY SYSTEM - The invention relates to a method for feeding electrical current into an electrical, three-phase power supply system having a first phase, a second phase and a third phase with a first voltage, a second voltage and a third voltage at a power supply system frequency, comprising the steps of: measuring the first, second and third voltages, transforming the first, second and third voltages into a positive phase-sequence voltage system and a negative phase-sequence voltage system according to the method of symmetrical components, calculating a first desired current, a second desired current and a third desired current for feeding into the first, second and third phases of the power supply system, wherein the first, second and third desired currents are calculated on the basis of at least one value of the positive phase-sequence voltage system and/or the negative phase-sequence voltage system. | 09-11-2014 |
20140375062 | SLIP RING ASSEMBLY - The invention concerns a method of reconditioning a slip ring transmitter of the gold wire type which has a slip ring, in particular a gold ring, for use with a gold wire board as the circuit board, including the steps: removing a gold wire board from the slip ring transmitter, and fitting a multi-brush board as a replacement for the gold wire board. | 12-25-2014 |
20150042094 | METHOD FOR THE CONTROL OF A WIND TURBINE WITH NO MAINS SUPPORT AVAILABLE - The invention relates to a method for controlling a wind turbine that comprises a generator, is provided to feed electrical power into an electricity supply grid but has not yet been connected to the electricity supply grid, comprising the steps: generating electrical power using the generator and supplying electrical elements of the wind turbine with the power generated, and to a wind turbine for generating electrical power from the wind and for feeding the electrical power generated into an electricity supply grid, wherein a method according to one of the preceding claims is carried out. | 02-12-2015 |
20150069836 | METHOD FOR CONTROLLING AN ARRANGEMENT FOR SUPPLYING ELECTRIC CURRENT TO A POWER SUPPLY SYSTEM - The invention relates to a method for controlling a feed arrangement having a wind energy installation for feeding electrical power into an electrical supply system, comprising the following steps: generating electrical power using the wind energy installation from wind, feeding a first proportion of the generated electrical power into the electrical supply system, supplying a second proportion of the generated electrical power to an electrical consumer for consuming the supplied second proportion of the generated electrical power, and wherein, depending on at least one monitored system state and/or depending on the prevailing wind, the second proportion of the generated electrical power which is supplied to the consumer is reduced wholly or partially and the first proportion of the electrical power fed into the electrical supply system is increased correspondingly, and to a corresponding feed arrangement. | 03-12-2015 |