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:
May. 05, 1992
Filed:
Nov. 01, 1990
Applicant:
Inventor:
Byron R Mehl, Belvidere, IL (US);
Assignee:
Sundstrand Corporation, Rockford, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 71 ; 363 95 ; 307 58 ; 307 82 ; 307103 ;
Abstract
Prior voltage balancers for three-phase inverters are useful only with inverters which are not in wide use today. In order to overcome this problem, a voltage balancing circuit for a commonly used inverter balances N phase voltages produced on N output lines. The circuit includes switch controllers coupled to the N output lines for sensing the magnitude of each phase voltage and N-1 voltage combining circuits responsive to the switch controllers and coupled to N-1 output lines for modifying the voltage magnitudes on the N-1 output lines whereby the N phase voltages are maintained within a range of voltage magnitudes.