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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.:

US 9219426 B1

PDFFull Text
Date of Patent:
Dec. 22, 2015

Filed:

Feb. 08, 2013

Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter

Applicant:

Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;

Inventors:

Takayoshi Yamamoto, Mito, JP;

Masaya Ichinose, Hitachiota, JP;

Akira Bando, Hitachi, JP;

Keiichi Yamashita, Hitachi, JP;

Shigenori Inoue, Hitachi, JP;

Toru Yoshihara, Hitachinaka, JP;

Yoshio Eguchi, Hitachi, JP;

Osamu Sakuchi, Hitachi, JP;

Shuji Katoh, Hitachiota, JP;

Tomomichi Ito, Hitachinaka, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Gary L Laxton

Int. Cl.
CPC ...
H02M 5/40 (2006.01); H02M 7/12 (2006.01); H02M 7/48 (2007.01); H02M 7/217 (2006.01); H02M 7/483 (2007.01);
U.S. Cl.
CPC ...
H02M 7/12 (2013.01); H02M 7/217 (2013.01); H02M 7/48 (2013.01); H02M 7/483 (2013.01); H02M 2007/4835 (2013.01);
Abstract

A switching element of a power converter generates a low voltage, using a current flowing in the power converter, and supplies a power to drive itself. A switching element of a power converter for conversion from direct current into alternate current or from alternate current into direct current includes: a terminal and a terminal which are used in building the switching element itself in the power converter; a capacitor, a high-side controllable switch and a low-side controllable switch enabling outputting the voltage of the capacitor, the voltage being output between the terminal and the terminal, and a self-supply power source for supplying a power to drive the bi-directional chopper switching element itself, using a current flowing in the capacitor.

Find Patent Forward Citations

Yamamoto, Takayoshi. (2015). Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter (U.S. Patent No. 9219426). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9219426

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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