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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 9450523 B1

PDFFull Text
Date of Patent:
Sep. 20, 2016

Filed:

Nov. 08, 2012

Motor drive apparatus

Applicant:

Mitsubishi Heavy Industries Automotive Thermal Systems Co., Ltd., Kiyosu-shi, Aichi, JP;

Inventors:

Kenichi Aiba, Tokyo, JP;

Kyohei Watanabe, Tokyo, JP;

Takayuki Takashige, Tokyo, JP;

Assignee:

MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD., Kiyosu-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Eduardo Colon Santana

Assistant Examiner:

Bickey Dhakal

Int. Cl.
CPC ...
H02P 1/24 (2006.01); H02P 6/00 (2016.01); B60L 15/08 (2006.01); B60L 11/18 (2006.01); B60L 15/00 (2006.01); B60L 15/02 (2006.01); B60L 15/20 (2006.01);
U.S. Cl.
CPC ...
H02P 6/002 (2013.01); B60L 11/1803 (2013.01); B60L 15/007 (2013.01); B60L 15/025 (2013.01); B60L 15/08 (2013.01); B60L 15/20 (2013.01); B60L 2240/421 (2013.01); B60L 2240/423 (2013.01); B60L 2270/147 (2013.01); Y02T 10/643 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/72 (2013.01); Y02T 10/7275 (2013.01);
Abstract

To suppress a ripple contained in current flowing into a DC power supply during one-pulse control in a motor drive apparatus receiving electric power from the DC power supply. A motor drive apparatusincludes an inverter control device () provided with a one-pulse control mode in which, during one electrical angle cycle, a positive rectangular pulse voltage and a negative rectangular pulse voltage are applied, as gate drive signals, to a switching element corresponding to each phase. When performing the one-pulse control mode, the inverter control device () gradually increases or reduces a duty in a predetermined phase angle width at rising and falling edges of the rectangular wave voltage.

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