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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 10250175 B1

PDFFull Text
Date of Patent:
Apr. 02, 2019

Filed:

Dec. 19, 2016

Field winding synchronous machine drive system

Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventor:

Masahiro Seguchi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Oliff PLC

Primary Examiner:

Eduardo Colon Santana

Assistant Examiner:

Said Bouziane

Int. Cl.
CPC ...
H02P 25/03 (2016.01); H01K 1/26 (2006.01); H02P 25/22 (2006.01); H02K 1/14 (2006.01); H02K 1/26 (2006.01); H02P 27/06 (2006.01); H02K 19/12 (2006.01); H02K 3/28 (2006.01); H02K 19/10 (2006.01); H02P 9/14 (2006.01); H02P 9/38 (2006.01); H02K 11/33 (2016.01);
U.S. Cl.
CPC ...
H02P 25/03 (2016.02); H02K 1/146 (2013.01); H02K 1/26 (2013.01); H02K 3/28 (2013.01); H02K 19/10 (2013.01); H02K 19/12 (2013.01); H02P 9/14 (2013.01); H02P 9/38 (2013.01); H02P 25/22 (2013.01); H02P 27/06 (2013.01); H02K 11/33 (2016.01); H02K 2213/12 (2013.01);
Abstract

A field winding synchronous machine drive system includes a field winding synchronous machine having a stator and a rotor and a drive apparatus configured to drive the field winding synchronous machine. The stator has N m-phase stator coils wound on a stator core to create a rotating magnetic field, where N is an integer not less than 2 and m is an integer not less than 3. The rotor has at least one main field winding wound on a rotor core to create field magnetic flux. The drive apparatus includes N inverters each of which supplies m-phase alternating current to a corresponding one of the N m-phase stator coils. Specifically, each of the inverters supplies the corresponding m-phase stator coil with the m-phase alternating current which includes a fundamental-wave current and a time-harmonic current superimposed on the fundamental-wave current; the time-harmonic current has a shorter period than the fundamental-wave current.

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