Magnettemperaturschätzungssystem für elektrischen Synchronmotoren

Details

Veröffentlichungs-Nr.

EP2894784

Aktenzeichen

EP14380002

Anmeldetag

13. Januar 2014

Veröffentlichung

26. Mai 2021

Erteilung

26. Mai 2021

Rechtsraum

EP

IPC

H02P29/66H02P6/34H02P23/14

Abstract

A magnet temperature estimating system for a synchronous electric motor having a permanent magnet comprises: a superimposing unit (5) configured to superimpose a voltage or current of a frequency different from a frequency of a fundamental wave driving the synchronous electric motor on at least a d-axis of the synchronous electric motor; a calculator (18) configured to calculate an impedance of the synchronous electric motor from the superimposed voltage or current and a current or voltage obtained by the superimposing; and a magnet temperature estimating unit (19) configured to estimate a temperature of the permanent magnet on the basis of the calculated impedance.

Anmelder

Firma

NISSAN MOTOR CO., LTD.

Land

🇯🇵 Japan

Fachgebiete