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. 02, 1976
Filed:
Aug. 29, 1974
Applicant:
Inventor:
Manfred Weibelzahl, Erlangen, DT;
Assignee:
Siemens Aktiengesellschaft, Munich, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
321-5 ; 321 / ; 321 / ;
Abstract
An improved method and apparatus for operating a converter fed rotating field machine to obtain better utilization of the converter rectifiers in which the stator windings of the machine are fed with non-sinusoidal phase currents with one phase current always limited to a maximum value and the other phase currents increased by the difference between that maximum value and a typical sinusoidal wave current. This is accomplished in such a manner that the power and torque of the rotating field machine are not affected.