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:
Jun. 12, 2007
Filed:
Feb. 15, 2005
Sven Martin, Wolfsburg, DE;
Bernd-guido Schulze, Wolfsburg, DE;
Oliver Rauch, Gifhorn, DE;
Markus Billman, Euskirchen, DE;
Sven Martin, Wolfsburg, DE;
Bernd-Guido Schulze, Wolfsburg, DE;
Oliver Rauch, Gifhorn, DE;
Markus Billman, Euskirchen, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
The invention relates to a device and a method for switching currents in a stator winding () of a generator/electric motor combination, said stator winding () comprising at least one winding which can be short-circuited or switched in a highly-resistive manner by means of at least one device (T, D; T, D). Said at least one winding is connected to a capacitor (C), by which means the voltage peaks thereof can be reduced as a result of switching processes, and energy stored in the stator winding can be temporarily stored. At least one switchable decoupling element () is arranged between the winding and the capacitor (C). The energy to be temporarily stored can be branched off as a charging current to the capacitor by means of the decoupling element (), as a result of the disconnection of the device in a non-working cycle, and the temporarily stored energy can be fed back into the stator winding () as a working current in the working cycle. The decoupling element () is temporally controlled during the feedback in such a way that the capacitor voltage UC does not fall below a set voltage value.