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公开(公告)号：US11777315B2
公开(公告)日：2023-10-03
申请号：US17356547
申请日：2021-06-24
CPC分类号： H02J3/32 , H02J3/16 , H02M7/003 , H02M7/797 , H02J2310/42
摘要： A power converter, a voltage detector that detects a system voltage at an AC wiring side of the power converter; and a controller that performs power conversion control between AC wiring and DC wiring by transmitting a drive signal to the power converter. The controller includes: a phase calculator that calculates a current phase from the system voltage detected by the voltage detector; a phase jump angle calculator that calculates a virtual phase that follows temporal changes in the current phase in a lagging manner, and calculates a phase difference between the current phase and the virtual phase as a phase jump angle; and a drive signal generator that generates the drive signal to the power converter, which is a signal for adjusting active power that is inputted to/outputted from the power converter so as to suppress the phase jump angle.
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公开(公告)号：US11128245B2
公开(公告)日：2021-09-21
申请号：US16757692
申请日：2018-10-16
发明人： Yusuke Umezu , Kazushige Sugimoto , Soichiro Bando , Naoki Yamaguchi , Kenichi Sakimoto , Kiyoshi Kimura , Suguru Takayama , Takato Uda
IPC分类号： H02P9/06 , H02J3/48 , H02J1/12 , H02P101/30 , B64D47/00
摘要： At least one of a plurality of generators is a first generator configured such that a relationship of a generator output voltage with respect to a generator active power output from the generator to a corresponding first AC wiring portion has a predetermined first drooping characteristic. The control device is configured to generate a drive signal for a power conversion device by deciding a target value of a first control element such that a relationship of an AC wiring portion voltage with respect to a power conversion device active power output from the power conversion device to a first AC wiring portion corresponding to a first generator has a predetermined second drooping characteristic and correcting the target value of the first control element according to a DC voltage at a DC wiring portion.
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公开(公告)号：US10985560B2
公开(公告)日：2021-04-20
申请号：US16468882
申请日：2017-12-26
发明人： Yusuke Umezu , Kazushige Sugimoto , Soichiro Bando , Naoki Yamaguchi , Kiyoshi Kimura , Suguru Takayama , Takato Uda
摘要： Each of the plurality of generators is configured so a relationship of frequency with respect to a generator active power output by each generator to the corresponding alternating-current wiring unit has a predetermined first drooping characteristic. The plurality of power conversion devices is configured to convert alternating-current power input through each alternating-current wiring unit into direct-current power, and to convert direct-current power input through the direct-current wiring unit into alternating-current power. The control device is configured to determine a target value of a control element such that a relationship of frequency with respect to a power conversion device active power output by each power conversion device to the corresponding alternating-current wiring unit has a predetermined second drooping characteristic, and is configured to generate a drive signal for each power conversion device by correcting a target value of the control element in response to direct-current voltage at the direct-current wiring unit.
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