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:
Jun. 17, 1986
Filed:
Oct. 31, 1985
Applicant:
Inventor:
Thomas M Jahns, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318254 ; 318138 ; 318439 ;
Abstract
By using the on-state forward voltage drops of the power switches to measure phase currents, and by using diode logic to sense the voltage drops, it is possible for a single voltage comparator to perform the current regulation function for an entire power converter. Current regulation is obtained in drives using either overlapping or nonoverlapping current conduction for excitation of the motor phases. A thermistor compensates for offsets and for temperature sensitivity of the power switch voltage drops.