The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2020
Filed:
Dec. 17, 2018
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Kansuke Fujii, Machida, JP;
FUJI ELECTRIC CO., LTD., Kawasaka-Shi, Kanagawa, JP;
Abstract
A momentary-voltage-drop compensation apparatus interconnecting a power system and a DC power supply to a load. The apparatus includes a system interconnection switch connected between the power system and the load, a first power converter that performs DC-AC conversion to DC power of the DC power supply, a second power converter that includes a first terminal connected to the first power converter and the DC power supply, and a second terminal connected between the system interconnection switch and the power system, for performing AC-DC conversion to the AC power supplied from the power system, and a control unit that is connected to the first power converter, and is configured to control, in response to a voltage drop in the power system, the first power converter to output a zero-phase current, a current value of which is no larger than that of a current flowing through the system interconnection switch.