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:
Oct. 22, 1985
Filed:
Mar. 03, 1983
Applicant:
Inventors:
Mitsuyuki Honbu, Katsuta, JP;
Yasuo Matsuda, Hitachi, JP;
Katsunori Suzuki, Takahagi, JP;
Yoshiki Kajita, Hitachi, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Engineering Co., Ltd., Ibaraki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 71 ; 363 64 ;
Abstract
Herein disclosed is an inverter device which includes two or more groups of unit switching circuits connected in parallel with a d.c. power source and each having gate turn-off thyristors connected in series with each other. Further inclusive are current balancing reactors, which are respectively connected between the series nodes of the gate turn-off thyristors of the respective groups, and a.c. output terminals respectively leading out from intermediate points of the aforementioned reactors.