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:
Nov. 03, 2020
Filed:
Mar. 22, 2017
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Ryota Okuyama, Chuo-ku, JP;
Taichiro Tsuchiya, Chuo-ku, JP;
Abstract
In the present power conversion device, when a fault occurs in a power system () and DC voltage (VDC) of a capacitor () included in a unit converter () exceeds a protection level (VH), the operation of an inverter () is stopped. When the DC voltage (VDC) decreases to a recovery level (V1) or lower, DC voltage control of the inverter () is resumed to quickly decrease the DC voltage (VDC). When the DC voltage (VDC) decreases to a recovery level (V2) or lower, reactive power control of the inverter () is resumed. Thus, even when a fault occurs in the power system (), the operation of the inverter () can be quickly resumed.