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:
Jun. 17, 2008
Filed:
Sep. 15, 2006
Applicant:
Michael Leo Mcclelland, Leeds, GB;
Inventor:
Michael Leo McClelland, Leeds, GB;
Assignee:
Switched Reluctance Drives Limited, Harrogate, North Yorkshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 25/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrical machine is controlled with a combination of a physical rotor position transducer and a software position detection algorithm. The physical transducer has a reduced number of sensors, so that it will only give accurate information at high speeds. The software algorithm is executed by a low-cost processor which cannot provide sufficient information at high speeds. The controller blends the information from the two position detectors to produce an economic drive which operates over a large speed range.