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This paper presents a direct torque control with space vector modulation method for matrix converter drives. It is possible to combine the advantages of matrix converter with the advantages of the DTC strategy by using space vector modulation algorithm of matrix converter and direct torque control strategy of induction motor. The proposed control system has been validated through simulations with...
This paper proposes a fuzzy sliding-mode speed controller for high performance IM drive application. The sliding-mode speed controller of asynchronous induction motors is discussed firstly. Then, the fuzzy control is used for optimizing the switching on the sliding surface. Finally, the robust performance of the speed controller is validated with simulations and experiments.
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...
Operating single phase fed motors across a wide range of speed and load single phase fed motors across a wide range of speed and load with high efficiency is of growing interest. The paper at hand presents an investigation into the efficiency of different low cost variable speed drive concepts (namely phase control, integral (half) cycle control and integral switched cycle control) based on capacitor...
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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