This paper aims to propose a novel parameter and topology combination optimization method of switched reluctance motors with an amorphous alloy core (SRMA), which can take into account the vibration and torque of SRMA and achieve multi-objective performance improvement.
First, the stator pressing structure is designed according to the force− magnetic coupling relationship, which is based on the inverse-magnetostrictive effect by parameter optimization, and the rotor structure is designed according to a solid isotropic with material penalization-based method by topology optimization. Second, a novel parameter and topology combination optimization model is established. Then, the optimal pressure value of stator teeth and the optimal rotor structure are obtained by the proposed method. Finally, the novel parameter and topology method is verified by simulations and experiments.
The results verify the efficacy of the proposed method and the accuracy of the proposed numerical analysis model. The magnetostriction effect and its inverse effect cannot be ignored in motor design. Compared with the motor before optimization, the average torque is increased by 11%, the maximum vibration displacement is reduced by 37% and the torque ripple is not increased.
The novel parameter and topology combination optimization method proposed in this paper takes into account the magnetostrictive effect and its inverse effect of motor core materials and establishes an electromagnetic-mechanical coupling numerical analysis model of SRMA, which improves the multi-objective performance of motor.
