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The traditional space-vector pulsewidth modulation (SVPWM) maximum voltage transfer ratio (VTR, i.e., the ratio of the output voltage fundamental amplitude to the input voltage fundamental amplitude) is 0.866 in a linear modulation region. In this paper, the output voltage fundamental amplitude and total harmonic distortion (THD) affected by a basic vector and a hexagon vector in traditional indirect...
Multi-phase motors are usually designed to have the concentrated winding and non-sinusoidal air gap flux density distribution in order to maximize the electromagnetic torque. To realize the object, phase voltage of the multi-phase motor should have some special harmonics corresponding with the air gap flux density. In this paper, a novel SVPWM named Harmonic Space Vector Injecting SVPWM (HSVI-SVPWM)...
The PWM technology of multiphase inverter is one of the most important technologies in multiphase drive system. In this paper, a novel space vector PWM with low harmonic and low switching loss for five-phase inverter is proposed by applying the voltage vectors skillfully. Comparing with the traditional space vector PWM (TSVPWM), another two middle vectors is adopted to implement the SVPWM in the proposed...
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...
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