Drehmomentschätzungssystem für elektrischen Synchronmotor

Details

Veröffentlichungs-Nr.

EP2894782

Aktenzeichen

EP14380001

Anmeldetag

13. Januar 2014

Veröffentlichung

29. August 2018

Erteilung

29. August 2018

Rechtsraum

EP

IPC

H02P21/14H02P21/20G01L3/00H02K11/24H02K11/25H02P29/60

Abstract

A torque 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 magnet temperature estimating unit (14) configured to estimate a temperature of the permanent magnet from the superimposed voltage or current and a current or voltage obtained by the superimposing; and a torque estimating unit (15) configured to estimate a torque of the synchronous electric motor from the estimated temperature of the permanent magnet.

Anmelder

Firma

NISSAN MOTOR CO., LTD.

Land

🇯🇵 Japan

Fachgebiete