Influence and evaluation of non‐ideal manufacturing process on the cogging torque of a permanent magnet excited synchronous machine

Abstract

Purpose

The purpose of this paper is to describe how a minimisation of cogging torque is performed with respect to the non‐ideal manufacturing process, aiming at a robust design of the studied machine, focusing on magnetisation faults and the use of different qualities of the permanent magnet material.

Design/methodology/approach

The applied methodology is a combination of design of experiments and finite element analysis to minimise the cogging torque of the estimated machine. Different qualities of the permanent magnet material are investigated by a stochastic analysis.

Findings

A robust design of the machine is achieved, which is verified by a stochastic analysis. Furthermore, this analysis shows the strong influence of the magnet quality on the cogging torque.

Practical implications

This paper provides a method for a machine design which is robust against non‐ideal manufacturing and an approach to prove the use of a bad quality for a possible reduction of the fabrication costs.

Originality/value

This paper gives a close insight on how to investigate non‐ideal manufacturing and in particular its influence on the cogging torque.

Citation

Coenen, I., Herranz Gracia, M. and Hameyer, K. (2011), "Influence and evaluation of non‐ideal manufacturing process on the cogging torque of a permanent magnet excited synchronous machine", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 3, pp. 876-884. https://doi.org/10.1108/03321641111110843