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:
Nov. 27, 2012
Filed:
Oct. 27, 2009
Yo Chan Son, Torrance, CA (US);
Jihoon Jang, Torrance, CA (US);
Brian A. Welchko, Torrance, CA (US);
Nitinkumar R. Patel, Cypress, CA (US);
Steven E. Schulz, Torrance, CA (US);
Yo Chan Son, Torrance, CA (US);
Jihoon Jang, Torrance, CA (US);
Brian A. Welchko, Torrance, CA (US);
Nitinkumar R. Patel, Cypress, CA (US);
Steven E. Schulz, Torrance, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Methods and systems for controlling an electric motor are provided. The motor includes a plurality of windings. Each winding is coupled to a respective set of first and second switches. The first switch of each set of switches is simultaneously activated. Current flow through the plurality of windings is measured while the first switch of each set of switches is activated. The electric motor is controlled according to a first motor control method if the measured current is below a predetermined threshold. The electric motor is controlled according to a second motor control method if the measured current is above the predetermined threshold.