Analysis of a reverse hybrid hysteresis motor using hyperbolic modelling of hysteresis loop

Abstract

The performance analysis of a hybrid hysteresis motor using an analytical model is presented in this study. The proposed hybrid motor benefits fromthe advantages of both the conventional axial and radial flux hysteresis motors with a unique stator. For the design of the proposed machine, a pre-studied hybrid hysteresis motor is investigated. To modify the field equations, the hyperbolic approximation of the hysteresis loop is implemented to investigate the effects of the minor loops described by the harmonic components of the field. Next, the impact of the harmonics of the magnetomotive force on machine performance is estimated by an iterative approach. Then, the closed-form expressions for the developed torque are obtained in both planes and the results are stacked-up linearly by considering the basics of the superposition theorem. To evaluate the performance of the proposed machine and also the accuracy of the analysis approach, a laboratory prototype has been built. The test results validate the acceptable performance of the proposed hysteresis motor.