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:
Mar. 08, 2011
Filed:
Nov. 29, 2007
Hiroyuki Tsutada, Tokyo, JP;
Takashi Hirai, Tokyo, JP;
Haruhiko Kohyama, Tokyo, JP;
Kenji Kamei, Tokyo, JP;
Hiroyuki Tsutada, Tokyo, JP;
Takashi Hirai, Tokyo, JP;
Haruhiko Kohyama, Tokyo, JP;
Kenji Kamei, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A target-closing phase-map generating section generates in advance a target closing phase map in consideration of a pre-arc characteristic and variations of a mechanical action of a breaker, and amplitude fluctuations of the load voltage. A target-closing time calculating section calculates a target closing time string from frequencies and phases of the power source voltage and the load voltage, respectively, of the breaker referring to the target closing phase map. A closing control section, when a close commandis inputted, controls the timing of outputting a closing control signal based on a predicted closing time and the target closing time string.