Variable Switching Point Parallel Predictive Torque Control (VSP3TC) for Induction Motor

This paper presents a variable switching point parallel predictive torque control (VSP³TC) strategy for an induction motor. VSP³TC is introduced as one method of the Finite-Set Model Predictive Control (FS-MPC) methodology. The mainly three drawbacks of FS-PMC are high ripples on controlled variables, adjustment of weighting factors and high calculation effort demand, respectively. VSP³TC implements a recently proposed parallel predictive torque control (PPTC) algorithm by means of a variable switching point. In this way, not only can a switching state be applied for less than a whole sample cycle which results in a lower torque ripple, but weighting factor can also be eliminated. Experimental results are provided to verify the performance of VSP³TC strategy.