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:
Jul. 28, 1981
Filed:
Jan. 15, 1980
Jean-Paul Pouillange, Aulnay-sous-Bois, FR;
BBC Brown, Boveri & Company, Ltd., Baden, CH;
Abstract
A natural commutation static frequency converter including a polyphase cycloconverter and its control circuit, a switching device enabling breaking of inputs of two Graetz bridges of at least one of monophase cycloconverters, as well as breaking of outputs of the bridges which are not connected to neutral point. The switching device results in insertion of a self-inductance between opened outputs of the Graetz bridges, and replacement of the control circuit of cycloconverter with a natural commutation rectifier-inverter control circuit, so as to form at least one natural commutation rectifier-inverter. The switching device further enables replacement of the outputs of the polyphase cycloconverter with the outputs of at least one rectifier-inverter so formed. The converter may be used to supply a synchronous motor.