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In this paper, a new direct torque control (DTC) method of multi-phase induction motor for electrical propulsion is proposed. The classical DTC method for three phase induction motor uses the hysteresis-loop controller based on the switching table, in which the stator flux and torque ripple exists obviously. The new DTC method mentioned above applies the space vector PWM (SVPWM), which can achieve...
In this paper, a detail implementation of direct torque control scheme (DTC) for DSP based 12-phase synchronous propulsion motor drive is described. TMS320LF2407A and TMS320C33 are used to construct the dual-DSP drive board which allows sophisticated control algorithm adopted by the proposed control scheme. By this means, we control the torque and flux linkage with composed voltage vectors and select...
This paper presents the analysis, simulation, and modeling of direct torque-controlled three-level inverter-fed multi-phase synchronous motor. Based on the mathematic model, a improved direct torque control scheme is proposed for three-level inverter-fed 12-phase synchronous motor. In the proposed scheme, we can control the torque and flux linkage with composed space vectors in each control period,...
The developments of electric propulsion technique need high power propulsion motor testing system, in which propeller load simulation is an important part. In this paper, a new doubly-fed machine load system is presented to simulate the stable and dynamical properties of marine propeller operating in different conditions. By changing the magnitude and phase of the rotor voltage, the input torque of...
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