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:
Mar. 01, 2022
Filed:
Mar. 30, 2018
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
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.