Patent · US Active

Method for switching off a current-excited synchronous machine of a motor vehicle

US11433770B2 · kind B2 · utility

1Cited by

5References

13Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Zakaria El Khawly · Munich, DE
Igor Gusyev · Munich, DE
Joerg Merwerth · Dachau, DE
Nuno Miguel Silva Cerqueira · Taing, DE
Christian Steinbauer · Harrling, DE

Key dates

Filing date	May 28, 2019
Grant date	Sep 6, 2022
Priority date	—
Expiry date	Nov 16, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2207/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.