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In this paper the direct torque control (DTC) of the induction motor fed by four switch three phase inverter (FSTPI) is investigated. A modified space vector modulation (SVM) approach with optimal voltage vector sequence is proposed to compensate the effect of DC-link voltage variations caused by circulating phase current through the capacitor bank. SVM-DTC scheme of FSTPI fed induction motor is based...
This paper demonstrates the direct torque control permanent magnet synchronous motor (DTC-PMSM) drive fed by asymmetrical multilevel inverter. The cascaded H-bridges topology with ratio-3 DC voltage sourced cells inverter has been employed. The DTC controller receives a reference torque and flux signals, the torque controller output determines the position of the desired flux vector. The amplitude...
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