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:
Nov. 23, 2010
Filed:
Dec. 16, 2008
Takahiro Suzuki, Hitachi, JP;
Yoshitaka Iwaji, Hitachinaka, JP;
Tsunehiro Endo, Hitachiota, JP;
Yasuo Notohara, Hitachiota, JP;
Yoshiaki Kurita, Shizuoka, JP;
Tatsuo Ando, Shizuoka, JP;
Chikara Tanaka, Hitachi, JP;
Takahiro Suzuki, Hitachi, JP;
Yoshitaka Iwaji, Hitachinaka, JP;
Tsunehiro Endo, Hitachiota, JP;
Yasuo Notohara, Hitachiota, JP;
Yoshiaki Kurita, Shizuoka, JP;
Tatsuo Ando, Shizuoka, JP;
Chikara Tanaka, Hitachi, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
A converter includes a converter circuithaving a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current flowing through the smoothing condenser to be a set value. The condenser current is controlled to be the set value (e.g. zero) to thereby reduce the capacity of the smoothing condenser and make the converter small.