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:
Aug. 11, 1998
Filed:
Oct. 09, 1996
Applicant:
Inventors:
Guenter Gleim, Villingen, DE;
Hermann Link, Donaueschingen, DE;
Assignee:
Deutsche Thomson Brandt GmbH, Villingen-Schwenningen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ; H02P / ; H02P / ;
U.S. Cl.
CPC ...
318439 ; 318430 ; 318254 ;
Abstract
In the case of a motor controller for electronically commutated DC motors, an additional current and/or an additional voltage is passed at the commutation instant to that winding of the motor which is active at that time, in order to prevent torque drops. In order to compensate for torque drops at different motor loads, the duration and/or amplitude of the additional current and/or of the additional voltage are/is determined from the actual motor load.