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:
Sep. 13, 2016
Filed:
Dec. 25, 2012
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Hideaki Emoto, Tokyo, JP;
Mitsuyuki Shirae, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Abstract
A power supply device () includes a plurality of constant current output circuits () that can supply power to a load (). The constant current output circuit includes a pulse generation unit (), and a PI feedback control unit () that performs feedback control on the pulse voltage output from the pulse generation unit. When an abnormality occurs in the constant current output circuit that supplies power to the load and the constant current output circuit that supplies power to the load is switched, a cycle of the feedback control, which is performed for the pulse generation unit of the constant current output circuit corresponding to a switching destination, is changed to a second cycle higher than a first cycle in the constant current output circuit that is not yet switched.