A Comprehensive Optimization Control Method for Hybrid Excitation Synchronous Motor

Abstract EN

Hybrid excitation synchronous motor (HESM) offers the advantages of a convenient flux regulation and a wide range of available speeds.

As such, it may be conveniently employed in the fields of electric vehicle and aerospace.

In this paper, based on a suitable control strategy for vector and speed partition, we put forward a speed control method for HESM which shows optimal efficiency.

On the one hand, our method aims at minimizing the copper loss by an optimal configuration of the q-axis current, the d-axis current, and the excitation current under the constraint voltage at the armature end.

On the other hand, we conduct a comprehensive analysis of the effects of the flux-weakening speed coefficient on the operating performance of the motors and suggest a self-adaptive control method to regulate that coefficient and further improve the overall performance of the motors, including their speed-range regulation, their efficiency, and their dynamical properties.

The proposed flux-weakening control method has been assessed by simulations and HESM-driven experiments.

Results have confirmed the feasibility and optimality of our method.