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:
Aug. 04, 1998
Filed:
Jun. 07, 1995
Applicant:
Inventor:
Stephen J Watkins, Leeds, GB;
Assignee:
Switched Reluctance Drives, Ltd., Harrogate, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A02P / ;
U.S. Cl.
CPC ...
318701 ; 318254 ; 318685 ;
Abstract
An electric motor controller is disclosed that controls the torque of a switched reluctance motor with an angle controller that eliminates the need for a look-up table. In one example, the electric motor controller includes an angle controller that employs edge-triggered monostables to generate a single pulse firing signal which is synchronized with rotor position and whose pulse length varies with torque demand. An angle firing circuit utilizing freewheeling is also disclosed.