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:
Jul. 05, 2011
Filed:
Sep. 21, 2007
Applicants:
Ryuichi Shimada, Tokyo, JP;
Tadayuki Kitahara, Tokyo, JP;
Kazuhiko Fukutani, Tokyo, JP;
Inventors:
Assignee:
Tokyo Institute of Technology, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/24 (2006.01); H05B 6/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Reverse conducting type semiconductor switches are arranged in a bride from, an energy storage capacitor is connected with its DC terminal to obtain a magnetic energy regeneration switch, and then an induction coil is connected to its AC terminal. An AC pulse current of variable frequency is obtained by applying a gate signal to the semiconductor switch to thereby turn it ON/OFF; since a voltage is generated automatically by regenerating magnetic energy, a DC power supply is connected to the opposite ends of the capacitor through a smoothing coil, thus injecting power.