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.

Date of Patent:
Sep. 15, 2015

Filed:

Sep. 29, 2014
Applicant:

Fanuc Corporation, Yamanashi, JP;

Inventors:

Hidetoshi Uematsu, Yamanashi, JP;

SeungJun Lee, Yamanashi, JP;

Assignee:

FANUC CORPORATION, Yamanashi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2006.01);
U.S. Cl.
CPC ...
H02P 21/0096 (2013.01); H02P 21/0089 (2013.01); H02P 21/0035 (2013.01);
Abstract

A control apparatus includes, a first calculating unit which calculates first d-phase and q-phase current limit candidate values, a second calculating unit which calculates second d-phase and q-phase current limit candidate values, a q-phase unit which, when the absolute value of the first d-phase current limit candidate value is smaller than that of the second d-phase current limit candidate value, sets the first q-phase current limit candidate value as a q-phase current limit value, but otherwise sets the second q-phase current limit candidate value as the q-phase current limit value, and a d-phase unit which, when the absolute value of the first d-phase current limit candidate value is smaller than that of the second d-phase current limit candidate value, sets the first d-phase current limit candidate value as a d-phase current limit value, but otherwise sets the second d-phase current limit candidate value as the d-phase current limit value.


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