Induction machine DTC-SVM: A comparison between two approaches

The paper deals with a comparison between two DTC-SVM approaches: (i) DTC-SVM with a hysteresis controllers, and (ii) DTC-SVM with a predictive controller. Following the formulation of both DTC-SVM approaches, their implementation in the Matlab-Simulink environment has been treated. The transient behavior as well as the steady state features of the induction motor drive under both DTC-SVM approaches, are compared and commented. It has been found that the second DTC-SVM yields high dynamic performances in the whole speed range. These performances are characterized by a low torque ripple with a high capability to eliminate the demagnetization problem which penalizes the flux regulation at low speeds in the first DTC-SVM approach. However, the second DTC-SVM approach with a predictor controller requires much more CPUtime than the first one.