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:
Mar. 22, 1988
Filed:
Dec. 19, 1986
Applicant:
Inventor:
Yoshiaki Miyazawa, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 71 ; 307 82 ; 363 95 ;
Abstract
An inverter control apparatus contains digital phase-locked loop oscillators, in order to achieve a synchronization with a reference frequency of a commercial power supply. The inverters are activated by outputs from programmable dividers for frequency-dividing the output pulses from the digital phase-locked loop oscillators. The frequency-dividing ratio of each of the programmable dividers is changed in accordance with the deviation of the active output powers of the inverters.