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1.发明授权公开(公告)号：US12066474B2
公开(公告)日：2024-08-20
申请号：US17270818
申请日：2019-07-31
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach
IPC: G01R23/177 , G01R19/25 , H02J3/24 , H02J3/38
CPC classification number: G01R23/177 , G01R19/2509 , G01R19/2513 , H02J3/241 , H02J3/381 , H02J2300/28
Abstract: A method for detecting low-frequency oscillations, in particular subsynchronous resonances, in an electrical supply grid is provided. The grid has a line voltage with a rated line frequency. The method comprises recording first and second series of measurements each for performing a frequency analysis (FFT). The method includes performing a lower frequency analysis for the first series for a lower frequency range and forming a lower amplitude spectrum. The method includes performing an upper frequency analysis for the second series for an upper frequency range and forming an upper amplitude spectrum. The method includes testing whether a low-frequency oscillation component can be identified in the lower amplitude spectrum, and testing whether a low-frequency oscillation component can be identified in the upper amplitude spectrum, where the presence of a low-frequency oscillation is assumed when a low-frequency oscillation component is identified in at least one of the lower and upper amplitude spectra.
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公开(公告)号：US11705733B2
公开(公告)日：2023-07-18
申请号：US17538115
申请日：2021-11-30
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach
CPC classification number: H02J3/322 , B60L53/00 , B60L58/12 , B60L58/22 , H02J7/0014 , H02J7/0025 , H02J7/0048
Abstract: A method for controlling an exchange of power between a charging infrastructure and an electricity supply grid is provided. A number of power units are formed as electric vehicle. Each power unit has a variable state of charge. From the individual states of charge of the power units, an overall state of charge can be determined. For the overall state of charge, a flexibility range in dependence on time can be predefined for a control time period. The flexibility range is spanned by a progression over time of an upper limit of the overall state of charge and a progression over time of a lower limit of the overall state of charge for the control time period. The flexibility range has range points which can be defined by a value of the overall state of charge and a point in time in the control time period.
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公开(公告)号：US11511639B2
公开(公告)日：2022-11-29
申请号：US16633914
申请日：2018-07-24
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach , Christian Strafiel , Stefan Gertjegerdes
IPC: B60L53/31 , H02J7/00 , H02J1/10 , B60L53/67 , B60L53/62 , B60L53/16 , H02J7/04 , B60L53/10 , B60L53/60
Abstract: A charging station for charging a plurality of electric vehicles, in particular electric cars, comprising: a supply device, in particular for connecting to an electricity supply grid, for supplying the charging station with electric power, a plurality of charging terminals each for charging at least one electric vehicle, and each charging terminal comprises a supply input for drawing electric power from the supply device, a charging output having one or more charging terminals each for outputting a charging current for respectively charging a connected electric vehicle, and at least one DC current controller, arranged between the supply input and the charging output, for generating a respective controlled current from the electric power from the supply device, wherein each charging current (IL1, IL2) is formed from a controlled current or from a plurality of controlled currents (IS1, IS2, IS3), and wherein the charging terminals are connected to one another at exchange terminals by way of electrical exchange lines in order to exchange controlled currents with one another by way of said exchange lines.
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公开(公告)号：US20220344943A1
公开(公告)日：2022-10-27
申请号：US17729947
申请日：2022-04-26
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach
Abstract: Provided is a method for feeding electric power into an electricity supply grid via a connection node by way of a converter-controlled infeed unit, in particular by way of a wind power installation or a wind farm. The grid has a grid voltage and a grid frequency and is characterized by a grid nominal voltage and a grid nominal frequency. The grid voltage of the grid is acquired, a delayed differential angle is ascertained on the basis of the acquired grid voltage. The delayed differential angle corresponds to a difference between an acquired phase signal that indicates a temporal profile of a phase angle of the grid voltage and a phase signal that is delayed with respect to the acquired phase signal. A grid impedance effective for the connection node is acquired, and an infeed power is predefined based on the delayed differential angle and based on the impedance.
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5.发明申请公开(公告)号：US20220247178A1
公开(公告)日：2022-08-04
申请号：US17586438
申请日：2022-01-27
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach
Abstract: A method for controlling a wind power installation or a wind farm, comprising the steps: exchanging active and/or reactive electrical power at a grid connection point with an electrical supply grid that has a conventional power plant; ascertaining a reactive power demand of the electrical supply grid; changing the exchange of the reactive electrical power at the grid connection point with the electrical supply grid in dependence on the reactive power demand of the electrical supply grid, in order to support the conventional power plant.
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Patent Agency Ranking
公开(公告)号：US11286905B2
公开(公告)日：2022-03-29
申请号：US16465437
申请日：2017-12-01
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach , Ingo Mackensen , Kai Busker
Abstract: A method for rebuilding an electric supply grid of a grid operator by means of at least one wind power installation, wherein the electric supply grid has a first grid section and at least one further grid section, wherein the first grid section is connected to the at least one wind power installation and has a first grid nominal voltage, the first grid section is coupled to the at least one further grid section via at least one switching device in order to transmit electric energy between the grid sections, wherein the at least one switching device is set up to disconnect the first grid section from the at least one further grid section in the event of a fault, comprising the steps of operating the at least one wind power installation in an observation mode if the fault occurs, wherein the wind power installation does not feed the first grid section in the observation road and a status of the first grid section is checked, and operating the at least one wind power installation in a grid rebuilding mode if the first grid section has a grid rebuilding voltage, and operating the at least one wind power installation in a normal operating mode again as soon as the fault has passed.
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公开(公告)号：US11196370B2
公开(公告)日：2021-12-07
申请号：US16622236
申请日：2018-06-13
Applicant: WOBBEN PROPERTIES GMBH
Inventor： Johannes Brombach
IPC: H02P9/10 , F03D9/25 , H02P9/48 , H02P101/15
Abstract: A method for supplying power at a network connection point into an electric supply network having a network frequency by means of a converter-controlled generator unit, in particular a wind turbine, comprising the following steps: supplying electric power depending on a control function, wherein the electric power can comprise active and reactive power, and a selection can be made between a normal control function and at least one frequency-maintaining control function differing from the normal control function as a control function, and the normal control function is selected if it has been recognized that the electric supply network is operating in a normal state, and the frequency-maintaining control function is selected if a steady-frequency operating state is present or is being prepared, wherein a steady-frequency operating state describes an operating state particularly of the electric supply network in which the network frequency is to be maintained at a constant value.
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公开(公告)号：US20210265841A1
公开(公告)日：2021-08-26
申请号：US17183143
申请日：2021-02-23
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach , Ingo Mackensen , Stefan Gertjegerdes
Abstract: Provided is a method of feeding electric power at a grid connection point into an electric power grid having a grid voltage using a converter-controlled feeder, in particular using a wind energy system and/or of a storage unit. The method includes feeding the electric power into the electric power grid in a normal operating mode when no grid fault or grid malfunction has been detected in the electric power grid, and switching to a fault mode when a grid fault or grid malfunction has been detected, in which the grid voltage is increased or decreased. In the normal operating mode an active current is fed in in order to feed active electric power into the grid and if the need arises a reactive electric power is additionally fed into the grid by a reactive current. The combination of the active and reactive currents results in an apparent current.
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公开(公告)号：US10683846B2
公开(公告)日：2020-06-16
申请号：US16326574
申请日：2017-08-21
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach , Katharina Schubert
Abstract: A method for controlling at least one wind power installation for generating electrical energy from wind for infeed into an electrical supply network is provided. The wind power installation has a rotor that can be operated at a variable rotor rotational speed and rotor blades having adjustable blade angles and coupled to the aerodynamic rotor, for generating a generator power. The wind power installation is operated in a normal mode in which it feeds available wind power up to a rated power into the network and the available wind power indicates a power which can be obtained from the wind and fed into the network depending on the wind and technical limitations of the wind power installation. The wind power installation changes from the normal mode to a support mode depending on an operating situation of at least one solar installation which feeds into the same network.
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公开(公告)号：US20200059178A1
公开(公告)日：2020-02-20
申请号：US16610421
申请日：2018-05-03
Applicant: Wobben Properties GmbH
Inventor： Johannes Brombach
Abstract: A method and apparatus for operating a converter system of a wind turbine for exchanging electrical power with an electrical supply grid at a grid connection point are provided. In the method and apparatus, the converter system is operated in a normal operating mode. An overload situation affecting the converter system is detected and operation of the converter system is changed to an overload operating mode when the overload situation is detected. An average switching frequency for generating an output current is reduced in the overload operating mode of the converter system in comparison with the normal operating mode, a higher load is permitted on the converter system, which may be in the form of an increased temperature or an increased output current, in the overload operating mode of the converter system for a predetermined maximum overload period.
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