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. 25, 2020
Filed:
Nov. 27, 2015
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chou-ku, JP;
Hiroshi Masunaga, Chuo-ku, JP;
Akihiro Yamanishi, Chuo-ku, JP;
Abstract
When an abnormality occurs in a first voltage detector (), a control circuit () in an uninterruptible power supply device controls an inverter () in synchronization with an output signal (VID) from a second voltage detector () to match a phase of a two-phase AC voltage (VO, VO) output from the inverter () with a phase of a two-phase AC voltage (VI, VI) supplied from a commercial AC power supply (), and then turns on a semiconductor switch pair (S, S) and a bypass switch pair (S, S). Accordingly, even when an abnormality occurs in the first voltage detector (), the two-phase AC voltage can be supplied to a load () without instantaneous interruption.