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:
Nov. 01, 1994
Filed:
Jul. 07, 1992
Applicant:
Inventors:
Assignee:
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ; H02K / ;
U.S. Cl.
CPC ...
318254 ; 318439 ;
Abstract
A method for suppressing current peaks occurring during commutation in phase windings of a brushless direct-current motor, including supplying the phase windings via an indirect direct-current converter with rectangular current having an actual value measured exclusively in a direct-current link of the converter (single-current measurement), and delaying current buildup in the phase winding by a time period t.sub.v with respect to a current decay.