IDiyas

For the Inventor, By the Inventor

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 11431238 B1

PDFFull Text
Date of Patent:
Aug. 30, 2022

Filed:

Sep. 04, 2018

Power conversion device, motor drive unit, and electric power steering device

Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Takashi Kitamura, Kyoto, JP;

Eiji Wada, Kawasaki, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Muhammad S Islam

Assistant Examiner:

Charles S Laughlin

Int. Cl.
CPC ...
H02M 1/32 (2007.01); H02H 3/16 (2006.01); H02P 9/02 (2006.01); H02P 27/06 (2006.01); H02M 7/48 (2007.01); H02P 25/18 (2006.01); B62D 5/04 (2006.01); H02H 7/08 (2006.01); H02M 7/5387 (2007.01); H02P 27/08 (2006.01); H02P 29/024 (2016.01); H02M 1/00 (2006.01); B60R 16/03 (2006.01);
U.S. Cl.
CPC ...
H02M 1/32 (2013.01); B62D 5/0457 (2013.01); B62D 5/0463 (2013.01); B62D 5/0481 (2013.01); H02H 7/0833 (2013.01); H02M 7/48 (2013.01); H02M 7/53871 (2013.01); H02P 25/18 (2013.01); H02P 27/06 (2013.01); H02P 27/08 (2013.01); H02P 29/0241 (2016.02); B60R 16/03 (2013.01); H02M 1/0009 (2021.05); H02M 1/325 (2021.05); H02P 2209/01 (2013.01);
Abstract

A power conversion device may include a first inverter to which one end of each phase winding of a motor is coupled, a second inverter to which the other end of each phase winding is coupled, and a switch circuit having at least one of a first switch element that switches between connection and disconnection of the first inverter to and from a ground, a first protection circuit being coupled in parallel to the first switch element, and a second switch element that switches between connection and disconnection of the second inverter to and from the ground, a second protection circuit being coupled in parallel to the second switch element.

Find Patent Forward Citations

Loading…