Patents by Inventor Volker Diedrichs
Volker Diedrichs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11081886Abstract: A method for controlling a generating unit that feeds into an electrical supply system. The generating unit feeds into the electrical supply system using one or more converters or inverters. The method is provided for the purpose of detecting a system separation or formation of a separate system, and the method includes controlling the feed by a feed controller operating with at least one current controller, detecting at least one current control error and testing the detected current control error for a disparity from a predetermined reference range. The method includes identifying a system separation involving a separate system that is disconnected from the electrical supply system and to which the generating unit is connected if a disparity from the predetermined reference range has been detected.Type: GrantFiled: April 24, 2018Date of Patent: August 3, 2021Assignee: Wobben Properties GmbHInventor: Volker Diedrichs
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Publication number: 20200191840Abstract: A method for controlling a generating unit that feeds into an electrical supply system. The generating unit feeds into the electrical supply system using one or more converters or inverters. The method is provided for the purpose of detecting a system separation or formation of a separate system, and the method includes controlling the feed by a feed controller operating with at least one current controller, detecting at least one current control error and testing the detected current control error for a disparity from a predetermined reference range. The method includes identifying a system separation involving a separate system that is disconnected from the electrical supply system and to which the generating unit is connected if a disparity from the predetermined reference range has been detected.Type: ApplicationFiled: April 24, 2018Publication date: June 18, 2020Inventor: Volker Diedrichs
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Publication number: 20200072192Abstract: A method for controlling a wind power installation, wherein the wind power installation has an aerodynamic rotor with rotor blades that are individually adjustable in their blade angle and the rotor can be operated with a variable rotational rotor speed, and the wind power installation has a generator coupled to the aerodynamic rotor, for generating a generator output, comprising the steps of: individually adjusting each blade angle in a way corresponding to an individual setpoint blade angle, wherein each setpoint blade angle is made up of a common basic angle, which is specified for all of the rotor blades, and an individual compensatory angle, to allow for individual load torques, detecting in each case at least one load torque on each of the rotor blades, or a variable that is representative of this, wherein for each rotor blade considered, there is a preceding rotor blade and the setpoint blade angle of each rotor blade considered is determined in dependence on the at least one load torque of its precediType: ApplicationFiled: December 19, 2017Publication date: March 5, 2020Inventors: William MELI TIWA, Volker DIEDRICHS, Stefan GERTJEGERDES
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Patent number: 10174742Abstract: The invention relates to a method for controlling a wind park comprising several wind power installations to feed electrical power into an electrical AC grid at a point of common coupling (PCC). The method comprises feeding a 3-phase current at a point of common coupling, identifying a grid voltage on the point of common coupling, comparing the grid voltage that was identified on point of common coupling with at least one predetermined set point value, determining set point values for wind power installations depending on a comparison conducted to meet a stability criterion on point of common coupling, passing the determined set point values to plant control units of the individual wind power installations, and producing electrical current at each of the wind power installations depending on the predetermined set point values to be jointly fed in on point of common coupling.Type: GrantFiled: July 2, 2013Date of Patent: January 8, 2019Assignee: Wobben Properties GmbHInventor: Volker Diedrichs
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Patent number: 10066603Abstract: The present invention relates to a method for injecting electrical energy into an electrical, three-phase grid, comprising the steps of: injecting current by means of an injection unit at a grid connection point, detecting an asymmetry in the grid, in particular a negative sequence component in the grid, injecting an asymmetrical current portion into the grid for, at least, partial compensation of the detected asymmetry, with injection of the asymmetrical current portion taking place such that the injection unit behaves like a consumer.Type: GrantFiled: October 17, 2013Date of Patent: September 4, 2018Assignee: Wobben Properties GmbHInventor: Volker Diedrichs
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Patent number: 9985561Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electric supply grid on a grid connection point, comprising the following steps: incorporating at least one grid characteristic of the electric supply grid related to the grid connection point, and controlling the generator in such way that it feeds power into the electric supply grid depending on the incorporated grid characteristic.Type: GrantFiled: July 3, 2013Date of Patent: May 29, 2018Assignee: Wobben Properties GmbHInventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
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Patent number: 9970968Abstract: 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.Type: GrantFiled: February 10, 2015Date of Patent: May 15, 2018Assignee: Wobben Properties GmbHInventors: Alfred Beekmann, Volker Diedrichs
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Patent number: 9920746Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electrical supply grid on a grid connection point, comprising the following steps: feeding electrical power into the electrical supply grid, whereby the generator is operated in a first operating point, interrupting the feeding so that no power is fed into the supply grid if a fault in the electrical supply grid or a fault of the feeding into the electrical supply grid exists or is displayed, resuming the feeding so that electrical power is again fed into the supply grid, whereby the generator resumes the feeding in a second operating point or is gradually increased in said second operating point, and the second operating point is designed in such a way that it feeds into the supply grid with a higher stability reserve than the first operating point.Type: GrantFiled: July 3, 2013Date of Patent: March 20, 2018Assignee: Wobben Properties GmbHInventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
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Publication number: 20160336834Abstract: A synchronous generator, in particular a multipole synchronous ring generator of a gearless wind turbine for generating electric current, comprising a rotor and a stator having teeth and slots arranged therebetween for receiving a stator winding, wherein the stator is divided in a circumferential direction into stator segments, each having a plurality of teeth and slots, and at least two stator segments being offset or interleaved with respect to one another in a circumferential direction.Type: ApplicationFiled: December 11, 2014Publication date: November 17, 2016Inventor: Volker Diedrichs
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Patent number: 9362837Abstract: 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.Type: GrantFiled: October 10, 2012Date of Patent: June 7, 2016Assignee: WOBBEN PROPERTIES GMBHInventors: Volker Diedrichs, Alfred Beekmann
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Publication number: 20150300320Abstract: The present invention relates to a method for injecting electrical energy into an electrical, three-phase grid, comprising the steps of: injecting current by means of an injection unit at a grid connection point, detecting an asymmetry in the grid, in particular a negative sequence component in the grid, injecting an asymmetrical current portion into the grid for, at least, partial compensation of the detected asymmetry, with injection of the asymmetrical current portion taking place such that the injection unit behaves like a consumer.Type: ApplicationFiled: October 17, 2013Publication date: October 22, 2015Inventor: Volker Diedrichs
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Publication number: 20150280629Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electric supply grid on a grid connection point, comprising the following steps: incorporating at least one grid characteristic of the electric supply grid related to the grid connection point, and controlling the generator in such way that it feeds power into the electric supply grid depending on the incorporated grid characteristic.Type: ApplicationFiled: July 3, 2013Publication date: October 1, 2015Applicant: Wobben Properties GmbHInventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
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Patent number: 9143071Abstract: The present invention concerns a method of controlling a wind power installation having a generator with a stator, a pole wheel with at least two rotor poles with a respective pole winding for producing a magnetic field guided in the respective rotor pole, and an air gap between the stator and the pole wheel, including the steps—controlling a respective exciter current through each pole winding,—varying at least one of the exciter currents relative to at least one further one of the exciter currents, and/or—varying at least one of the exciter currents in dependence on the position of the pole wheel in relation to the stator.Type: GrantFiled: May 24, 2012Date of Patent: September 22, 2015Assignee: Wobben Properties GmbHInventor: Volker Diedrichs
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Publication number: 20150219702Abstract: 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.Type: ApplicationFiled: February 10, 2015Publication date: August 6, 2015Inventors: Alfred Beekmann, Volker Diedrichs
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Publication number: 20150198145Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electrical supply grid on a grid connection point, comprising the following steps: feeding electrical power into the electrical supply grid, whereby the generator is operated in a first operating point, interrupting the feeding so that no power is fed into the supply grid if a fault in the electrical supply grid or a fault of the feeding into the electrical supply grid exists or is displayed, resuming the feeding so that electrical power is again fed into the supply grid, whereby the generator resumes the feeding in a second operating point or is gradually increased in said second operating point, and the second operating point is designed in such a way that it feeds into the supply grid with a higher stability reserve than the first operating point.Type: ApplicationFiled: July 3, 2013Publication date: July 16, 2015Applicant: Wobben Properties GmbHInventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
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Publication number: 20150148974Abstract: The invention relates to a method for controlling a wind park comprising several wind power installations to feed electrical power into an electrical AC grid at a point of common coupling (PCC). The method comprises feeding a 3-phase current at a point of common coupling, identifying a grid voltage on the point of common coupling, comparing the grid voltage that was identified on point of common coupling with at least one predetermined set point value, determining set point values for wind power installations depending on a comparison conducted to meet a stability criterion on point of common coupling, passing the determined set point values to plant control units of the individual wind power installations, and producing electrical current at each of the wind power installations depending on the predetermined set point values to be jointly fed in on point of common coupling.Type: ApplicationFiled: July 2, 2013Publication date: May 28, 2015Inventor: Volker Diedrichs
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Patent number: 8981708Abstract: 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.Type: GrantFiled: February 17, 2012Date of Patent: March 17, 2015Inventors: Volker Diedrichs, Alfred Beekmann
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Patent number: 8981755Abstract: 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.Type: GrantFiled: June 23, 2010Date of Patent: March 17, 2015Assignee: Aloys WobbenInventors: Alfred Beekmann, Volker Diedrichs
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Publication number: 20140254216Abstract: 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.Type: ApplicationFiled: October 10, 2012Publication date: September 11, 2014Applicant: Wobben Properties GmbHInventors: Volker Diedrichs, Alfred Beekmann
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Publication number: 20140184174Abstract: The present invention concerns a method of controlling a wind power installation having a generator with a stator, a pole wheel with at least two rotor poles with a respective pole winding for producing a magnetic field guided in the respective rotor pole, and an air gap between the stator and the pole wheel, including the steps— controlling a respective exciter current through each pole winding,— varying at least one of the exciter currents relative to at least one further one of the exciter currents, and/or— varying at least one of the exciter currents in dependence on the position of the pole wheel in relation to the stator.Type: ApplicationFiled: May 24, 2012Publication date: July 3, 2014Applicant: WOBBEN PROPERTIES GMBHInventor: Volker Diedrichs