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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 11264924 B1

PDFFull Text
Date of Patent:
Mar. 01, 2022

Filed:

Mar. 30, 2018

Motor driving apparatus and refrigeration cycle equipment

Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Yuichi Shimizu, Tokyo, JP;

Kazunori Hatakeyama, Tokyo, JP;

Keisuke Uemura, Tokyo, JP;

Assignee:

Mitsubishi Electric Corporation, Tokyo, JP;

Attorney:

Posz Law Group, PLC

Primary Examiner:

Said Bouziane

Int. Cl.
CPC ...
H02P 3/22 (2006.01); H02P 21/18 (2016.01); H02P 21/22 (2016.01); F25B 49/02 (2006.01); H02H 7/08 (2006.01); H02H 7/122 (2006.01); H02P 6/24 (2006.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
H02P 3/22 (2013.01); F25B 49/025 (2013.01); H02H 7/0844 (2013.01); H02H 7/1225 (2013.01); H02P 6/24 (2013.01); H02P 21/18 (2016.02); H02P 21/22 (2016.02); H02P 27/08 (2013.01); F25B 2600/021 (2013.01);
Abstract

In a motor driving apparatus including an inverter connectable to n motors (n being an integer not less than 2) each including a rotor having a permanent magnet, braking operation is performed on i (i being an integer from 1 to n−1) of the n motors, and then braking operation is performed on j (j being an integer from 1 to n−i) of the n motors other than the i motors. It is possible to reduce the risks of failure of the inverter and demagnetization of the motors due to overcurrent by reducing current flowing through the inverter and the motors when the braking operation is performed.

Find Patent Forward Citations

Shimizu, Yuichi. (2022). Motor driving apparatus and refrigeration cycle equipment (U.S. Patent No. 11264924). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11264924

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

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