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:
Aug. 29, 1989
Filed:
Dec. 03, 1987
Applicant:
Inventors:
John J Dhyanchand, Rockford, IL (US);
Sampat F Shekhawat, Rockford, IL (US);
Vietson M Nguyen, Rockford, IL (US);
Assignee:
Sundstrand Corp., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ; H02M / ;
U.S. Cl.
CPC ...
363 40 ; 363132 ;
Abstract
An inverter for producing a one or three phase output with neutral is disclosed. An LC resonant circuit is selectively switched by an inverter to produce one or three phases having a fundamental frequency equal to the frequency of each switching circuit within the phases of the inverter. The outputs are filtered to remove higher harmonics to pass the filtered output to the load. Energy is fed back into the resonant circuit by short circuiting the switching circuits at the time that the ouput voltage across a switching circuit is zero to minimize switching losses.