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:
Apr. 11, 2017
Filed:
Jul. 02, 2013
Mitsubishi Electric Corporation, Tokyo, JP;
Takuya Shimomugi, Tokyo, JP;
Koichi Arisawa, Tokyo, JP;
Takashi Yamakawa, Tokyo, JP;
Keisuke Uemura, Tokyo, JP;
Noriyuki Matsubara, Tokyo, JP;
Shinsaku Kusube, Tokyo, JP;
Kenta Yuasa, Tokyo, JP;
Akihiro Tsumura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A backflow preventing device includes a backflow preventing element that is connected between a power supply and a load and that prevents electric current from flowing backward from the load side toward the power supply side, a commutating device that performs a commutation operation for causing the electric current to flow to a commutation path connected in parallel with the backflow preventing element, and a controller that sets a time for performing the commutation operation and causes the commutating device to perform the commutation operation based on the set time. The backflow preventing device has a plurality of the commutation paths and has, for example, elements with small current-carrying capacities disposed in the commutation paths to achieve cost reduction and to cope with, for example, failures, thereby allowing for enhanced reliability for reducing recovery electric current.