公开(公告)号：US11433770B2

公开(公告)日：2022-09-06

申请号：US16424199

申请日：2019-05-28

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Zakaria El Khawly ,  Igor Gusyev ,  Joerg Merwerth ,  Nuno Miguel Silva Cerqueira ,  Christian Steinbauer

IPC: B60L3/04 ,  B60L3/00 ,  H02P3/18 ,  H02P25/022 ,  H02P27/06 ,  H02P25/024 ,  H02P101/45

Abstract: A method for switching off a current-excited synchronous machine of a motor vehicle, the current-excited synchronous machine having a rotor supplied by an excitation circuit of power electronics and a stator supplied via a bridge circuit of the power electronics, the method including interrupting a current supply to the rotor and the stator. The method further includes switching over the excitation circuit of the power electronics to a first freewheeling position, whereby energy contained in the excitation circuit and in the rotor is fed into a first energy store via a first feedback arrangement, and switching over the bridge circuit of the power electronics to a second freewheeling position, whereby energy contained in the bridge circuit and in the stator is fed into a second energy store via a second feedback arrangement.