Method for estimating the magnet temperature in an electrical machine, method for controlling said electrical machine, electronic device for estimating the magnet temperature in an electrical machine and system for controlling said electrical machine

Abstract

A method for estimating the magnet temperature in an electrical machine carried out by means of an electronic computer involves estimating a value of a total magnetic flux of the electrical machine and estimating a value of a first partial flux, representing a magnetic flux due to a reluctance of the electrical machine. The method also involves the steps of calculating a value of a second partial flux as a function of a difference between said value of the total magnetic flux and said value of the first partial flux and determining a value of a magnet temperature as a function of said value of the second partial flux.

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