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:
Jan. 11, 2000
Filed:
Jun. 24, 1999
Applicant:
Inventors:
Ross Maxwell Stuntz, Birmingham, MI (US);
Vladimir Aleksandrovich Bondarko, St. Petersburg, RU;
Alexander Timofeevich Zaremba, Dearborn Heights, MI (US);
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318804 ; 318799 ; 318801 ; 318811 ;
Abstract
Method of controlling torque of a multi-phase induction motor (10) includes estimating rotor speed as a rational function of filtered stator current i.sub.s0 and voltage u.sub.0 and first and second order derivatives of the filtered stator current and first order derivative of the filtered stator voltage, estimating rotor flux from said estimated rotor speed, estimating rotor flux angle from said estimated rotor flux, and using the estimated rotor flux angle to control motor torque.