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, 1988
Filed:
Jan. 04, 1988
Applicant:
Inventors:
Thomas M Jahns, Schenectady, NY (US);
Eric J Wildi, Chapel Hill, NC (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 98 ; 363132 ;
Abstract
An AC polyphase motor drive includes a current-controlled inverter comprising a plurality of semiconductor devices made up of power switches, such as IGBTs, and diodes. Current sensors integral with respective ones of a first group of the semiconductor devices sense the current delivered to each of the motor phase windings and a controller compares the sensed currents to a set of command signals to control operation of a second group of the semiconductor devices.