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. 22, 2006
Filed:
May. 26, 2004
Bruno P. B. Lequesne, Troy, MI (US);
Suresh Gopalakrishnan, Sterling Heights, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Thomas Wolfgang Nehl, Shelby Township, MI (US);
Bruno P. B. Lequesne, Troy, MI (US);
Suresh Gopalakrishnan, Sterling Heights, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Thomas Wolfgang Nehl, Shelby Township, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
Certain circuit faults in a phase of a multi-pole, switched reluctance, rotary electrical machine are detected; and the machine is selectively operated with a detected circuit fault when the nature of the fault permits continued operation of the phase and the operation of the phase is desirable. The fault may be one of certain short or open circuits in which at least one of the two current controlling electronic switches is operable to control phase current within predetermined limits. In the continued operation when a fault is detected, (1) the phase current is switched off earlier than it would be in the absence of the fault and/or (2) the maximum phase current is reduced compared with that permitted in the absence of the fault; and either or both of these modifications may be a function of motor speed. If the circuit fault adversely affects current control by an electronic switch normally controlling current level, another electronic switch is substituted for current control.