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:
Mar. 10, 1987
Filed:
May. 13, 1985
Applicant:
Inventor:
Thomas M Jahns, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318798 ; 318723 ; 318806 ;
Abstract
The operation of an interior permanent magnet synchronous motor is extended to the constant horsepower regime by causing the stator current vector to follow the voltage-limit ellipse in the counter-clockwise direction. The error between commanded stator current and actual stator current is determined to signal a saturation of the inverter and the commanded stator current is modified to reduce the error.