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:
Nov. 04, 1997
Filed:
Jun. 24, 1996
Applicant:
Inventors:
Didier G Rouaud, Twinsburg, OH (US);
Tony C Aboumrad, Parma Heights, OH (US);
Assignee:
Reliance Electric Industrial Company, Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363132 ; 363 98 ;
Abstract
A three-level NPC inverter topology including two auxiliary resonant commutation circuits which are controlled to clamp the voltage across each main inverter switch to zero voltage prior to altering the state of the switch in order to achieve soft switching of all main inverter switches while reducing output voltage harmonics and gradients.