Patent · US Active

Method for operating an electric machine of a motor vehicle, system and motor vehicle

US12103432B2 · kind B2 · utility

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11Claims

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Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Andreas Jacob · Munich, DE
Jovan Knezevic · Munich, DE
Raphael Weingartner · Garching an der Alz, DE

Key dates

Filing date	Nov 11, 2020
Grant date	Oct 1, 2024
Priority date	—
Expiry date	Jan 30, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/72
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is provided for operating a synchronous machine that can be operated in an efficient operating mode and an inefficient operating mode. In order to provide a working-point-specific torque the synchronous machine is controlled in the efficient operating mode such that a stator of the synchronous machine generates a synchronous rotary field which rotates synchronously with a rotor of the synchronous machine. In order to increase dissipated heat of the synchronous machine, which can be used to heat at least one component of the motor vehicle, the synchronous machine is transferred into the inefficient operating mode in which an asynchronous rotary field acts on the synchronous rotary field, said asynchronous rotary field superimposing dissipated heat-increasing harmonics on a fundamental wave of the synchronous rotary field while maintaining the working-point-specific torque.

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