C.Guarino Lo Bianco, A. Tonielli, F. Filicori
IEEE Tran. on Ind. Electr., Vol. 43, NO. 1, pp. 207-216, Feb. 1996
A three-level cascade structure is proposed for the control of a Variable Reluctance (VR) motor. In order to deal with the highly non-linear behaviour of VR motors, the controlling system includes two variable-structure controllers for currents and velocity loops as well as an intermediate torque-sharing compensator. The intermediate compensator has been adopted in order to achieve near optimal performance with minimal torque ripple. The proposed controller has been validated through extensive simulation experiments. The architecture of a prototype controller is presented and actual performance measured on a VR motor is discussed in comparison with simulations. The results show practical feasibility and good performance of the proposed controller, which is also suitable for a very simple and quite inexpensive fully hardware implementation.