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:
Dec. 14, 2010
Filed:
Nov. 16, 2007
Applicants:
Kyung Hoon Lee, Seoul, KR;
June Hee Won, Seoul, KR;
Gil Su Lee, Seoul, KR;
Jun Ho Ahn, Seoul, KR;
Jae Yoon OH, Seoul, KR;
Inventors:
Kyung Hoon Lee, Seoul, KR;
June Hee Won, Seoul, KR;
Gil Su Lee, Seoul, KR;
Jun Ho Ahn, Seoul, KR;
Jae Yoon Oh, Seoul, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motor driver system and its control methods are discussed. Even when a command magnetic flux decreases as a motor operates in a field weakening region, a current angle can be maintained always below a limit value, thereby obtaining the stability of the motor control.