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:
Feb. 23, 2010
Filed:
Jun. 17, 2005
Yu-seok Jeong, Seoul, KR;
Seung Ki Sul, Seoul, KR;
Silva Hiti, Redondo Beach, CA (US);
Khwaja M. Rahman, Troy, MI (US);
Bon-ho Bae, Torrance, CA (US);
Yu-Seok Jeong, Seoul, KR;
Seung Ki Sul, Seoul, KR;
Silva Hiti, Redondo Beach, CA (US);
Khwaja M. Rahman, Troy, MI (US);
Bon-Ho Bae, Torrance, CA (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A system and method for controlling an IPM synchronous machine in a vehicle that calculates an operating trajectory of the machine on-line. The system defines three operating ranges of the machine based on voltage magnitude, where a first operating range is controlled by a current limit of the machine and second and third operating regions are controlled by a voltage limit of the machine. The system calculates d- and q-axis current reference signals in the reference rotor frame for each of the three regions. The system determines which set of current reference signals will be used to control the machine based on the operating region. The third operating region is used during over-modulation of the machine.