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:
Jan. 16, 1990
Filed:
Dec. 05, 1988
Khai D Ngo, Gainesville, FL (US);
General Electric Company, Schenectady, NY (US);
Abstract
A power conversion system for converting polyphase AC power at a first frequency and voltage to AC power at a second frequency and voltage includes an input rectifier circuit and an output inverter circuit coupled by a DC link or interface comprising solid state devices. The interface includes a reversely-poled diodes connected between selected terminals of the rectifier and inverter circuits for carrying current in a forward direction. Controllable switches interconnect the same terminals for carrying current in a reverse direction to the inverter circuit. A controller responds to instantaneous current at the inverter terminals and to instantaneous input line voltages for selectively energizing the interface switches.