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公开(公告)号：US20220263320A1
公开(公告)日：2022-08-18
申请号：US17622136
申请日：2020-06-25
发明人： Eckard QUITMANN
摘要： A method for feeding electrical power into a grid at a grid connection point using a wind farm having installations connected to the point using transmission lines. The farm controller transmits active and reactive power specifications to the installations. A first power range is respectively specified at each installation and spans a range of values for active and reactive power to be fed in. The first power range has an active power limit to be complied with by the installation and a reactive power limit which can be reached by the installation and a second power range is specified at the grid connection point and spans a range of values for active and reactive power to be fed in. At least one installation respectively exceeds the active power limit, and the second power range is complied with by the wind farm at the grid connection point.
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公开(公告)号：US20220235737A1
公开(公告)日：2022-07-28
申请号：US17579389
申请日：2022-01-19
发明人： Ulf Schaper , Enno von Aswege , Paul Gerke Funcke
摘要： Provided is a method for controlling a wind power installation having a rotor operated with variable speed and having rotor blades that are adjustable in their blade angle. The installation is controlled in a partial-load range by an open-loop operating-characteristic control, which uses an operating characteristic. The operating characteristic presets a relationship between the rotational speed and a generator state variable to be set that is a generator power or torque. A value of the generator state variable preset by the operating characteristic is set in dependence on a detected speed. The installation is controlled in a full-load range by a closed-loop pitch control, in which the rotational speed is controlled to a speed setpoint value by adjusting the blade angles. In a presettable range of the partial-load range and/or in a transitional range from the partial-load range to the full-load range, the installation is controlled by a speed-power control.
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公开(公告)号：US20220228551A1
公开(公告)日：2022-07-21
申请号：US17611104
申请日：2020-05-15
发明人： Hauke MAASS , Jochen STEMBERG
IPC分类号： F03D1/06
摘要： A rotor blade of a wind turbine that has a Gurney flap, to an associated wind turbine, and to an associated method. A rotor blade for a wind turbine, having a rotor blade length, having a rotor blade depth which extends over the rotor blade length, having a rotor blade thickness which extends over the rotor blade length, and having a thickness of a trailing edge of the rotor blade, which thickness extends over the rotor blade length, said rotor blade comprising a Gurney flap, which has a height which extends over the rotor blade length, wherein the height of the Gurney flap is dimensioned according to the thickness of the trailing edge in such a way that a ratio of the height of the Gurney flap and the thickness of the trailing edge is between greater than 0% and 25%, in particular between 5% and 25%.
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公开(公告)号：US20220224265A1
公开(公告)日：2022-07-14
申请号：US17572441
申请日：2022-01-10
发明人： Stephan Jöckel , Christian Heyen , Tobias Muik , Wojciech Giengiel , Stefan Gertjegerdes , Menko Bakker , Harri Vihriälä
摘要： Provided is a method for heating a generator of a wind power installation during or before starting the installation. The generator is a permanent magnet synchronous generator configured to generate a stator current comprising at least one three-phase current. The installation is configured as a gearless installation and is connected to an electrical supply network for feeding electrical power into the network. The installation comprises a converter, connected to the generator, to control the generator to feed electrical power into the network. The method comprises rotating the rotor with a low rotational speed below a first limit and operating the converter such that the generator generates the stator current and electrical power, and no electrical power is fed into the electrical supply network. At least one portion of the stator current substantially circulates through the generator and the converter to consume power in generator windings to heat the generator.
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55.发明申请公开(公告)号：US20220169139A1
公开(公告)日：2022-06-02
申请号：US17537247
申请日：2021-11-29
发明人： Johannes Brombach
摘要： Provided is a method for controlling an exchange power between a charging infrastructure and an electrical supply network. A plurality of power units for outputting or taking up electrical power are connectable to the charging infrastructure in order to exchange electrical power between the power units and the electrical supply network via the charging infrastructure. The method includes determining an energy predefinition for a control time period, predefining a power limitation, and predefining an exchange power profile depending on the energy predefinition and the power limitation. The method includes determining partial exchange powers for the power units. A sum of the partial exchange powers substantially corresponds to the exchange power, determining the partial exchange powers is effected depending on states of charge of the power units, and determining the partial exchange powers is effected taking account of partial power limits of the power units.
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56.发明申请公开(公告)号：US20220169138A1
公开(公告)日：2022-06-02
申请号：US17537252
申请日：2021-11-29
摘要： A method for planning a power exchange between a charging infrastructure and an electricity supply grid. The infrastructure has a plurality of terminals for connecting and charging electric vehicles such that the electric vehicles can exchange power with the grid via the terminals. Each electric vehicle has an electrical storage unit with a variable individual state of charge for drawing and outputting power, and all of the storage units connected to the infrastructure form an overall storage unit of the infrastructure, which overall storage unit is characterized by a total storage capacity and a total state of charge that are variable. The prediction of arrival times of the vehicles at the terminals thereof is created, and a total state of charge prediction is created for a prediction period depending on the prediction of the arrival times, wherein the total state of charge prediction is created as a time profile.
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57.发明申请公开(公告)号：US20220166336A1
公开(公告)日：2022-05-26
申请号：US17600018
申请日：2020-04-01
发明人： Hans-Günter ECKEL , Ingmar KAISER
摘要： A method for generating at least one AC voltage using at least one inverter device is provided. The inverter device in each case includes comprises at least one voltage input for applying an input voltage, at least one voltage output for outputting an output voltage and at least one DC voltage intermediate circuit for providing an intermediate circuit voltage. The method includes controlling an AC voltage at the voltage output so as to output a first portion of an input power in the form of useful power, or to receive the input power or a portion thereof, and changing a system voltage of the inverter device such that at least one compensation current flows through at least one load resistor, in order thereby to output a second portion of the input power or the entire input power to the at least one load resistor in the form of excess power.
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公开(公告)号：US20220166221A1
公开(公告)日：2022-05-26
申请号：US17534242
申请日：2021-11-23
发明人： Johannes Brombach
摘要： Provided is a method for feeding electrical power into an electrical supply grid that has a grid voltage and a grid frequency. The grid comprises consumers for consuming electrical power from the grid, and generators for generating electrical power and feeding the electrical power into the grid. A feed management system is provided for managing the feed. The feed management system takes into consideration a power flow stipulation for a power flow in at least one grid segment of the electrical supply grid, an energy provision stipulation for the provision of a quantity of energy at at least one consumption point of the electrical supply grid, and a stability stipulation that specifies at least one stability criterion for the electrical supply grid. The feed management system, depending on the power flow stipulation, the energy provision stipulation and the stability stipulation, selects or adjusts a master controller to support the feed.
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公开(公告)号：US20220154689A1
公开(公告)日：2022-05-19
申请号：US17435599
申请日：2020-02-28
发明人： Enno VON ASWEGE
摘要： A method for operating a wind turbine is provided. The wind turbine has a tower with external tower loads acting thereon and has an aerodynamic rotor with rotor blades having adjustable pitch angles, which rotor generates rotor thrust. The method comprises the following steps: determining a speed of a tower head of the tower and/or of a nacelle of the wind turbine, determining an absolute wind speed in the region of the wind turbine, determining a pure wind power on the rotor on the basis of the absolute wind speed, determining an apparent wind power on the rotor on the basis of the speed of the tower head and/or of the nacelle, determining an aerodynamic tower vibration power on the basis of a difference between the apparent wind power and the pure wind power, and performing feedback control of the wind turbine using the aerodynamic tower vibration power.
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60.发明申请公开(公告)号：US20220154687A1
公开(公告)日：2022-05-19
申请号：US17525457
申请日：2021-11-12
发明人： Jörg Schüller , Florian Sartorius , Wilko Gudewer
摘要： A rotor hub for a wind power installation, with at least two flange portions each for receiving a rotor blade, wherein the rotor hub has a housing with a wall which is interrupted by the flange portions, wherein the housing has a wall region between two adjacent flange portions. A rotor arrangement for a wind power installation, and a wind power installation. A surface portion with cylindrical curvature is formed in the wall region.
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