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In this paper, Direct Torque Control (DTC) algorithms for dual three-phase induction motor fed by six phases Voltage Source Inverter (VSI) is described. The induction machine has two sets of three-phase stator windings spatially shifted by arbitrary angle. The machine dynamic model is based on the vector space decomposition theory. Optimal switching strategies to control the machine for different...
This paper investigates an electrical drive composed of a four-leg voltage source inverter and a three-phase star-connected surface permanent magnet synchronous machine. The fourth leg of the inverter is clamped to the neutral point of the machine. We find the current references leading to smooth torque and maximum torque per ampere operation in the presence of a third harmonic electromotive force...
This paper presents a new time-discrete predictive current control for permanent-magnet synchronous motor (PMSM) which follows a reference step in two sampling periods. The control stands out by using a permanent identification which allows fast control even if the motor parameters are changing. The identification analyzes the current response of each switch state of the voltage source inverter. This...
A direct torque control strategy of a three-level neutral point clamped inverter-fed induction machine is presented. Three-level inverters are an emerging technology and are commonly applied to high power motion drives instead of the standard two-level voltage source inverters (VSI). In three-level inverters the blocking voltage of each switch is half of the DC bus voltage, lower dV/dt is generated...
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