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This paper presents a new, accurate and simple calculation method to determine the switching frequency as well as semiconductor losses and junction temperatures in direct torque controlled induction motor drives. Instantaneous values of the switching frequency, semiconductor losses and junction temperature can be obtained on the basis of mechanical operating point data and the stator flux vector location...
The aim of this paper to spread the sliding mode control design technique on the new class of the AC drives: an induction motor(1M) fed by three-level voltage-source inverter (3LVSI). A comprehensive investigation of possible drive "variable structures" was carried out. Based on this analysis an original two-step design procedure allows using the "classical" result of sliding-mode...
This paper presents a high performance direct torque control (DTC) theme for the induction motor (IM). To solve those problems associated with conventional DTC, such as high current, flux and torque ripple, variable switching frequency, the space vector modulation (SVM) is implemented in the DTC to guarantee the constant switching frequency of the inverter. Meanwhile, the design of a robust speed...
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