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:
Jul. 01, 2003
Filed:
Dec. 11, 2000
Applicant:
Inventor:
Peter Mark Moriarty, Knaresborough, GB;
Assignee:
Switched Reluctance Drives Ltd., Harrogate, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/46 ;
U.S. Cl.
CPC ...
H02P 1/46 ;
Abstract
A reluctance drive includes a stator, a phase winding ( ) on the stator, a rotor ( ) that is movable relative to the stator, a controller for applying a current to the phase winding ( ), and a sensor for measuring the phase current in the winding ( ). Aspects of the invention detect when the phase current has passed its peak, compute when the peak phase current occurred using information on when the phase current passed its peak, determine rotor position using the computed position of the peak phase current.