Title:
電力変換装置、電源システム、及び、電力変換装置の制御方法
Document Type and Number:
Japanese Patent JP7183713
Kind Code:
B2
Abstract:
To suppress mutual interference between isolated operation detection and voltage fluctuation suppression while avoiding stoppage of a power conversion device.SOLUTION: A power conversion device system-interconnected with a commercial power system is provided between an AC electric path connected to the commercial power system and a DC power supply, and comprises: a power conversion section for power-converting from DC to AC or vice versa; and a control section including a first calculation section for controlling switching operation of the power conversion section, and obtaining a first reactive power to be injected for isolated operation detection on the basis of AC voltage of the AC electric path, and a second calculation section for obtaining active power and a second reactive power for suppressing voltage fluctuation of the AC electric path. When the first calculation section attempts to inject the first reactive power which interferes with the second reactive power, the control section injects the first reactive power in a state in which a present value of the second reactive power is kept constant.SELECTED DRAWING: Figure 2
Inventors:
Okumura Toshiaki
Naoki Ayai
Naoki Ayai
Application Number:
JP2018209097A
Publication Date:
December 06, 2022
Filing Date:
November 06, 2018
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
H02J3/38; H02J3/16; H02M7/48
Domestic Patent References:
| JP2014207808A | ||||
| JP2018148664A |
Attorney, Agent or Firm:
Patent Attorney Corporation Suncrest International Patent Office
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