Patent · US Active

Rotor for a synchronous machine

US10862374B2 · kind B2 · utility

2Cited by

2References

12Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Christoph Sudan · Eurasburg, DE
Berthold Schinnerl · Dierdorf, DE
Nuno Miguel da Silva Cerqueira · Borgo San Lazzaro, DE
Falko Friese · Bensheim, DE
Daniel RUPPERT · Lenting, DE

Key dates

Filing date	Nov 18, 2016
Grant date	Dec 8, 2020
Priority date	—
Expiry date	Oct 10, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A rotor for a synchronous machine of a motor vehicle includes an excitation coil configured to generate a magnetic field necessary for rotation of the rotor in a stator of the synchronous machine. The rotor also includes a supply circuit, to which energy is fed contactlessly such that the supply circuit supplies the excitation coil with the energy. The rotor also includes a demagnetization circuit configured to demagnetize the excitation coil, which, upon collapse of the energy supply of the excitation coil, diverts a current flowing through the excitation coil into a circuit branch in which at least one component for demagnetization is arranged, wherein the at least one component is also configured to perform a protection function to protect the supply circuit against an induced voltage generated at the excitation coil.

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