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. 28, 2015
Filed:
Mar. 13, 2013
Applicants:
Shenzhen Byd Auto R&d Company Limited, Shenzhen, Guangdong, CN;
Byd Company Limited, Shenzhen, Guangdong, CN;
Inventors:
Assignees:
Shenzhen BYD Auto R&D Company Limited, Guangdong, CN;
BYD Company Limited, Guangdong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/14 (2006.01); H02P 21/00 (2006.01);
U.S. Cl.
CPC ...
H02P 21/0035 (2013.01); H02P 21/0021 (2013.01);
Abstract
A method for controlling a rotation rate of an electric motor includes the s following steps: determining if an absolute value of a difference between an objective rotation rate of the electric motor and an actual rotation rate of the electric motor is greater than or equal to a predetermined value, and if yes, compensating a q axis current of the electric motor to adjust the rotation rate.