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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 9906164 B1

PDFFull Text
Date of Patent:
Feb. 27, 2018

Filed:

Dec. 08, 2014

Power conversion system

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Hiroshi Tamura, Tokyo, JP;

Takeshi Matsuo, Hitachinaka, JP;

Hiroyuki Yamada, Hitachinaka, JP;

Nobuhiro Akasaka, Hitachinaka, JP;

Sho Yaegaki, Hitachinaka, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Kyle J Moody

Int. Cl.
CPC ...
H02M 7/537 (2006.01); B60L 11/12 (2006.01); B60L 11/14 (2006.01); B60L 15/00 (2006.01); B60L 15/02 (2006.01); H02M 1/14 (2006.01); H02M 7/797 (2006.01); H02P 29/50 (2016.01); B60L 3/00 (2006.01); B60L 9/18 (2006.01); H02P 27/06 (2006.01); H02M 7/48 (2007.01); H02P 27/08 (2006.01); H02P 8/18 (2006.01); H02P 6/10 (2006.01); H02M 1/00 (2006.01); H02P 5/74 (2006.01);
U.S. Cl.
CPC ...
H02M 7/537 (2013.01); B60L 3/00 (2013.01); B60L 9/18 (2013.01); B60L 11/12 (2013.01); B60L 11/14 (2013.01); B60L 15/007 (2013.01); B60L 15/025 (2013.01); H02M 1/14 (2013.01); H02M 7/48 (2013.01); H02M 7/797 (2013.01); H02P 27/06 (2013.01); H02P 27/08 (2013.01); H02P 29/50 (2016.02); B60L 2210/14 (2013.01); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); B60L 2240/526 (2013.01); B60L 2240/527 (2013.01); B60L 2240/529 (2013.01); H02M 2001/007 (2013.01); H02M 2001/008 (2013.01); H02P 5/74 (2013.01); H02P 6/10 (2013.01); H02P 8/18 (2013.01); Y02T 10/643 (2013.01); Y02T 10/7022 (2013.01); Y02T 10/7077 (2013.01); Y02T 10/7225 (2013.01); Y02T 10/7241 (2013.01);
Abstract

A surge according to a change of a switching state can be reduced without increasing a torque ripple of a motor. A first switching signal to control switching of a boost converter is generated on the basis of a comparison of a first duty command value and a first triangular wave carrier of the boost converter. A second switching signal to control switching of an inverter is generated on the basis of a comparison of a second duty command value and a second triangular wave carrier of the inverter. In addition, the second triangular wave carrier is generated such that a frequency of the second triangular wave carrier becomes equal to a frequency of the first triangular wave carrier and a phase of the second triangular wave carrier is different from a phase of the first triangular wave carrier by 180 degrees.

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