Modeling of Magnetoelastic and Piezoelectric Coupling: Application to SRM Noise Damping

This paper examines a model of magnetomechanical and piezoelectric coupling. This model, based on the association of the magnetoelastic and piezoelectric constitutive laws, is implemented in a transient finite element formulation. The application is the reduction of the noise emitted by switched reluctance machines by means of an active damping. The active elements are piezoelectric actuators placed on the stator, for the purpose of reducing its vibrations. The control is based on a positive position feedback regulation. Thus, an infinite impulse response filter is added to the model in order to control the piezoelectric elements depending on information of the stator vibration.