Step response optimization method of switched reluctance motor

Abstract

Purpose

The purpose of this paper is to present a method of modeling the variable reluctance stepper motor using the time‐stepping finite element technique. The proposed model is used to minimize the step response overshoots considering the stator and rotor tooth geometry.

Design/methodology/approach

A strongly coupled field‐circuit model considering magnetic nonlinearity of the stepper motor is presented. As the main contribution, the Nelder‐Mead method of the motor geometry optimization that minimize the step response overshoots and positioning error is proposed.

Findings

The proposed method can be applied to obtain the optimal tooth/pole geometry of the stepper motor which is efficient to perform the possibly accurate positioning.

Originality/value

The paper examines the application of the presented optimization method to minimize the positioning error of the four‐phased variable reluctance stepper motor.

Citation

Stępień, S. and Bernat, J. (2011), "Step response optimization method of switched reluctance motor", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 3, pp. 841-852. https://doi.org/10.1108/03321641111110816