Processing of soft magnetic materials by powder metallurgy and analysis of their performance in electrical machines

Abstract EN

This article presents the use of finite elements to analyze the yield of electric machines based on the use of different soft magnetic materials for the rotor and the stator, in order to verify the performance in electric machine using powder metallurgy.

Traditionally, the cores of electric machines are built from rolled steel plates, thus the cores developed in this work are obtained from an alternative process known as powder metallurgy, where powders of soft magnetic materials are compacted and sintered.

The properties of interest were analyzed (magnetic, electric and mechanical properties) and they were introduced into the software database.

The topology of the rotor used was 400 W three-phase synchronous motor manufactured by WEG Motors.

The results show the feasibility to replace the metal sheets of the electric machines by solid blocks obtained by powder metallurgy process with only 0.37% yield losses.

In addition, the powder metallurgical process reduces the use of raw materials and energy consumption per kg of raw material processed.