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In this paper the theory of direct torque control (DTC) in permanent magnet synchronous motor (PMSM) is investigated. The effect of zero voltage vectors on the performances of the PMSM DTC drives is analyzed. Different from the conventional switching table eliminating zero voltage vectors, a novel switching table using zero voltage vectors is proposed. Simulation results show that the PMSM DTC drives...
This contribution deals with the control of the wheel drive with permanent magnet synchronous machine of the tram car. In order to achieve minimal dimensions of PMSM and on the other hand to be able to provide sufficient torque, the drive is operating in very wide speed range in the field weakening and with the machine load angle of 90deg. Thus, the new problem introduced by this drive is requirement...
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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