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:
Jan. 28, 1992
Filed:
Apr. 03, 1990
Applicant:
Inventors:
Rasappa Palaniappan, Michigan City, IN (US);
John J Dhyanchand, Rockford, IL (US);
Lewis E Unnewher, Michigan City, IN (US);
Assignee:
Sunstrand Corporation, Rockford, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ; H02K / ;
U.S. Cl.
CPC ...
318701 ; 363 98 ; 363138 ; 318138 ;
Abstract
The invention is a circuit (60) for controlling the operation of a variable reluctance machine having a plurality of phase windings. Pairs of phase windings (64, 66 or 65, 67) are controlled by a switching circuit having only three power switches which are controlled by a switch controller. Pairs of phase windings may be switched by one or more sets of switches each having the three power switches in several different modes of operation. The invention may be used to control multiple phase machines with an odd number of phases.