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:
Apr. 23, 2019
Filed:
Sep. 04, 2015
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Keisuke Uemura, Tokyo, JP;
Kazunori Hatakeyama, Tokyo, JP;
Yosuke Shinomoto, Tokyo, JP;
Takahiko Kobayashi, Tokyo, JP;
Yasuhiko Wada, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 27/08 (2006.01); F25B 31/02 (2006.01); H02M 7/5387 (2007.01); H02P 21/05 (2006.01); F25B 13/00 (2006.01);
U.S. Cl.
CPC ...
H02P 27/085 (2013.01); F25B 31/02 (2013.01); H02M 7/53871 (2013.01); H02P 21/05 (2013.01); F25B 13/00 (2013.01); F25B 2600/021 (2013.01); Y02B 30/741 (2013.01);
Abstract
A power converting apparatus includes: an inverter converting a direct-current voltage supplied from a power supply unit into an alternating-current voltage and outputting the alternating-current voltage to a motor; and an inverter control unit outputting synchronous PWM (Pulse Width Modulation) signals for driving switching elements of the inverter. A frequency of the synchronous PWM signals is periodically varied when periodic pulsation occurs in a load connected to the motor.