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1.发明公开
公开(公告)号：EP4012874A1
公开(公告)日：2022-06-15
申请号：EP21211700.6
申请日：2021-12-01
发明人： Shine, Shan , Jha, Kapil , Padmarao, Veena , Tiwari, Arvind Kumar , Tatikonda, Subbarao , Barton, Werner Gerhard
摘要： A method for controlling an inverter-based resource having an asynchronous machine connected to a power grid to provide grid-forming control of the inverter-based resource includes coupling at least one additional device to terminals of a first converter of the inverter-based resource. Further, the method includes emulating, via a controller, at least one of the at least one additional device or the first converter as a first virtual synchronous machine. Moreover, the method includes coordinating, via the controller, operation of the first virtual synchronous machine and a second converter of the inverter-based resource using a vector-control approach to control at least one of voltage and frequency at a point of interconnection between the inverter-based resource and the power grid in a closed loop manner.
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2.发明公开
公开(公告)号：EP4027510A1
公开(公告)日：2022-07-13
申请号：EP22150057.2
申请日：2022-01-03
发明人： Shine, Shan , Kavil Kambrath, Jishnu , Jha, Kapil , Padmarao, Veena , Tiwari, Arvind Kumar , Tatikonda, Subbarao
IPC分类号： H02P9/00
摘要： The system and method described herein provide grid-forming control of a power generating asset having a double-fed generator connected to a power grid. Accordingly, a stator-frequency error is determined for the generator. The components of the stator frequency error are identified as a torsional component corresponding to a drivetrain torsional vibration frequency and a stator component. Based on the stator component, a power output requirement for the generator is determined. This power output requirement is combined with the damping power command to develop a consolidated power requirement for the generator. Based on the consolidated power requirement, at least one control command for the generator is determined and an operating state of the generator is altered.
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公开(公告)号：EP4123861A3
公开(公告)日：2023-02-15
申请号：EP22182275.2
申请日：2022-06-30
IPC分类号： H02J3/00
摘要： A method for mitigating voltage disturbances at a point of interconnection (POI) of a grid-forming inverter-based resource (IBR) due to flicker includes receiving a voltage reference command and a voltage feedback. The voltage feedback contains information indicative of the voltage disturbances at the POI due to the flicker. The method also includes determining a power reference signal for the IBR based on the voltage reference command and the voltage feedback. Moreover, the method includes generating a current vector reference signal based on the power reference signal, the current vector reference signal containing a frequency component of the voltage disturbances. Further, the method includes generating a transfer function of a regulator based on the frequency component to account for the flicker effect. In addition, the method includes generating a current vector based on a comparison of the current vector reference signal and a current vector feedback signal. Thus, the method includes regulating a voltage vector command using the current vector to mitigate the voltage disturbances.
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公开(公告)号：EP4123861A2
公开(公告)日：2023-01-25
申请号：EP22182275.2
申请日：2022-06-30
IPC分类号： H02J3/00
摘要： A method for mitigating voltage disturbances at a point of interconnection (POI) of a grid-forming inverter-based resource (IBR) due to flicker includes receiving a voltage reference command and a voltage feedback. The voltage feedback contains information indicative of the voltage disturbances at the POI due to the flicker. The method also includes determining a power reference signal for the IBR based on the voltage reference command and the voltage feedback. Moreover, the method includes generating a current vector reference signal based on the power reference signal, the current vector reference signal containing a frequency component of the voltage disturbances. Further, the method includes generating a transfer function of a regulator based on the frequency component to account for the flicker effect. In addition, the method includes generating a current vector based on a comparison of the current vector reference signal and a current vector feedback signal. Thus, the method includes regulating a voltage vector command using the current vector to mitigate the voltage disturbances.
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公开(公告)号：EP4148940A1
公开(公告)日：2023-03-15
申请号：EP22190614.2
申请日：2022-08-16
发明人： Padmarao, Veena , Jha, Kapil , Tatikonda, Subbarao , Tiwari, Arvind Kumar , Barton, Werner Gerhard , Venkitanarayanan, Vaidhya Nath , Shine, Shan
摘要： The system and method described herein provide grid-forming control of a power generating asset having a generator, such as a double-fed generator, connected to a power grid. Accordingly, a stator-frequency error is determined for the generator. The components of the stator frequency error are identified as a damping component corresponding to a tower damping frequency and a stator component. Based on the stator component, a power output requirement for the generator is determined. This power output requirement is combined with the damping power command to develop a consolidated power requirement for the generator. Based on the consolidated power requirement, at least one control command for the generator is determined and an operating state of the generator is altered.
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公开(公告)号：EP4012918A1
公开(公告)日：2022-06-15
申请号：EP21211708.9
申请日：2021-12-01
摘要： A method for operating an asynchronous inverter-based resource connected to a power grid as a virtual synchronous machine to provide grid-forming control thereof includes receiving a frequency reference command and/or a voltage reference command. The method also includes determining at least one power reference signal for the inverter-based resource based on the frequency reference command and/or the voltage reference command. Further, the method includes generating at least one current vector using the power reference signal(s). Moreover, the method includes determining one or more voltage control commands for the inverter-based resource using the at least one current vector. In addition, the method includes controlling the inverter-based resource based on the one or more voltage control commands such that the inverter-based resource actively participates in controlling at least one of voltage and frequency at a point of interconnection between the inverter-based resource and the power grid in a closed loop manner.
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