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:
Apr. 11, 2017
Filed:
Aug. 06, 2013
Technische Universitaet Muenchen, Munich, DE;
Richard Eckl, Munich, DE;
Technische Universitaet Muenchen, Munich, DE;
Abstract
Device and method for dynamically adjusting an operating voltage for an electric motor (), which voltage is provided by a voltage source () formed in a modular manner, wherein modules (-) of the voltage source () formed in a modular manner are switched in dependence upon a rotational speed (n) of the electric motor () such that the overall degree of efficiency of the electric drive train is improved in a low rotational speed range of the electric motor (), wherein the modules (-) of the voltage source () are switched by means of a switching network () which is composed of controllable power switches () and can be actuated by control signals which are generated by a switching controller () in dependence upon the rotational speed (n) of the electric motor ().