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. 10, 2002
Filed:
Jul. 06, 2001
Applicant:
Inventor:
Bing Cheng, W. Bloomfield, MI (US);
Assignee:
Ballard Power Systems Corporation, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/46 ;
U.S. Cl.
CPC ...
H02P 1/46 ;
Abstract
A method and apparatus for controlling a permanent magnet synchronous motor ( ) coupled to a turbo engine such that transient current and steady state current are minimized. The method comprises the steps of, for a given DC bus voltage, determining an acceleration profile as a function of a voltage-offset value, a low-speed rated speed value, a high-speed rated speed value, a first desired speed for warming up the turbo engine, and a second desired speed where the turbo engine has sufficient torque to accelerate to its rated speed without the aid of the permanent magnet synchronous motor ( ).