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Model Predictive Direct Torque Control (MPDTC) is a recent computational control methodology that combines the merits of Model Predictive Control (MPC) with the ones of Direct Torque Control (DTC). Specifically, with respect to standard DTC, the converter's switching frequency and/or losses are considerably reduced, while at the same time the Total Harmonic Distortion (THD) levels of the phase currents...
Industrial applications often require two or more variable-speed electric drives, which have to be controlled independently. Over the past decade research efforts have been made to reduce the number of power electronic devices required in multi-motor drive systems in order to reduce the complexity and hence cost of the drive. One such drive system comprises n three-phase motors supplied by a (2n+1)-leg...
This paper presents a new method of control based on direct torque control (DTC) strategy. This method is designed to be applied in the control of induction motors (IM) fed with a three-level voltage source inverter (VSI). This type of inverter has several advantages in comparison with standard two-level VSI, such as a greater number of levels in the output voltage waveforms, lower dV/dt, less harmonic...
This paper presents a new kind of direct torque control (DTC) system based on the inverter with double-frequency for the motor drives of electric vehicles (EVs). According to the theory of the converter with double-frequency, the topology of a new kind of inverter with double-frequency is derived, and the operation states of the new circuit are analyzed. This kind of inverter has good dynamic and...
A high performance modular three-phase utility-interactive converter is designed and implemented in this paper. This converter has three operation modes: grid-connection inverter mode, stand-alone inverter mode and rectifier mode. Control principles and modes of every mode are analyzed in detail and the modular design method is adopted. A simple but valid control strategy is proposed. Finally a 10...
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