Topology Optimization of the Harmonic Content for Torque Ripple Minimization

This article proposes a formulation to minimize the torque ripple of switched reluctance machines (SRMs) by means of topology optimization. The novelty lies in targeting critical harmonics which allows for more control, both in the design of the rotor and the harmonic content of the torque, during the ripple minimization. An efficient gradient-based algorithm is used to solve the optimization problem and the gradient is obtained using the adjoint variable method.