公开(公告)号：US20200083709A1

公开(公告)日：2020-03-12

申请号：US16468882

申请日：2017-12-26

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Yusuke UMEZU ,  Kazushige SUGIMOTO ,  Soichiro BANDO ,  Naoki YAMAGUCHI ,  Kiyoshi KIMURA ,  Suguru TAKAYAMA ,  Takato UDA

IPC分类号： H02J3/06 ,  H02J3/46 ,  H02J9/06

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.

公开(公告)号：US20210203258A1

公开(公告)日：2021-07-01

申请号：US16757692

申请日：2018-10-16

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

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

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.

公开(公告)号：US20210320498A1

公开(公告)日：2021-10-14

申请号：US17356547

申请日：2021-06-24

申请人： Kawasaki Jukogyo Kabushiki Kaisha

发明人： Naoki YAMAGUCHI ,  Yusuke UMEZU ,  Soichiro BANDO ,  Kazushige SUGIMOTO

IPC分类号： H02J3/32 ,  H02M7/797 ,  H02M7/00 ,  H02J3/16

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.