Simplified Fuzzy Control for Flux-Weakening Speed Control of IPMSM Drive

Abstract EN

This paper presents a simplified fuzzy logic-based speed control scheme of an interior permanent magnet synchronous motor (IPMSM) above the base speed using a flux-weakening method.

In this work, nonlinear expressions of d-axis and q-axis currents of the IPMSM have been derived and subsequently incorporated in the control algorithm for the practical purpose in order to implement fuzzy-based flux-weakening strategy to operate the motor above the base speed.

The fundamentals of fuzzy logic algorithms as related to motor control applications are also illustrated.

A simplified fuzzy speed controller (FLC) for the IPMSM drive has been designed and incorporated in the drive system to maintain high performance standards.

The efficacy of the proposed simplified FLC-based IPMSM drive is verified by simulation at various dynamic operating conditions.

The simplified FLC is found to be robust and efficient.

Laboratory test results of proportional integral (PI) controller-based IPMSM drive have been compared with the simulated results of fuzzy controller-based flux-weakening IPMSM drive system.