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:
Oct. 11, 1994
Filed:
Mar. 10, 1993
Alan G Cocconi, Glendora, CA (US);
A. C. Propulsion, Inc., San Dimas, CA (US);
Abstract
A circuit generates phase pole command signals for controlling operation of an induction motor. To minimize instabilities occurring within the motor, a stability control circuit generates a phase shift signal, which is input to reference signal generators to adjust phase reference signals. When in a motoring mode, the phases of the reference signals are advanced monotonically with respect to the electro-motive force of the induction motor. When in a regeneration mode, the phases of the reference signals are decreased monotonically with respect to the electro-motive force. The resulting adjustment to the phases of the reference signals minimizes instabilities within the feedback control of the induction motor.