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The mathematical models of five-phase permanent magnet synchronous motor (PMSM) in abc frame and alphabeta frame are established, and the relationships between the torque and fundamental components, loss and harmonic components are revealed. To suppress the high third harmonic current appeared in five-phase machine especially, a novel space vector pulse width modulation (SVPWM) method which has a...
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 novel five-phase five-level inverter based on H-bridge is proposed. Then, the PWM control strategies of this inverter are researched. As the five-phase five-level inverter has 3125 space voltage vectors, it makes SVPWM algorithm extraordinarily complex and too difficult to implement. So, it is a feasible control scheme to adopt carrier-based PWM method. According to phase-shift SPWM...
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...
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