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:
Feb. 10, 1987
Filed:
Dec. 09, 1985
Applicant:
Inventor:
Stephen R MacMinn, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318696 ; 318685 ;
Abstract
A reluctance motor is started from standstill and accelerated to the rated speed of the motor without using a shaft position sensor. In this type of reluctance drive, if the motor fails to start and loses synchronism with the stepping commands, the resulting average current drawn by the motor will exceed the current drawn if the motor were in synchronism. If such excessive current is sensed, the starting sequence is re-tried.