A novel discontinuous space vector PWM control for multiphase inverter

Abstract

PWM control of multi-phase inverter is one of the key technologies in the ships electrical propulsion. In this paper, a novel discontinuous space vector PWM (DSVPWM) method of multiphase inverter is proposed by arranging the two zero vectors skillfully. Comparing with the continuous space vector PWM (CSVPWM) method the DSVPWM use only one zero vector in one switching period, so the switching loss is only four fifths of the CSVPWM. However, the output target line voltages of DSVPWM are still sine wave, the harmonic performance is excelled that of traditional SVPWM (TSVPWM) therefore. Several classic DSVPWM realization methods are given, and the operation characteristic, adapted load types and total harmonic distortion rate of them are analyzed and simulated.Index Terms--multiphase inverter; discontinuous space vector PWM; zero vector; total harmonic distortion rate

Comparison of 2L + 2M and 6L SVPWM for Five-Phase Inverter to Reduce Common Mode Voltage

“…To manage the supply for the multiphase ac drives, adopting pulse-width modulation (PWM) techniques is required [22]. For multiphase voltage source inverters, a variety of PWM approaches are studied and described in the literature [22][23][24][25][26][27][28][29].…”

Performance analysis and comparison for the five-phase inverter SVPWMs

“…[9] proposes a kind of five-phase inverter SVPWM technology, which is the direct expansion of the three-phase SVPWM technology. [10]~ [12] propose the near four vectors SVPWM (NFV-SVPWM) technology and discontinuous SVPWMs in terms of the structure features and voltage vectors distribution of the multi-phase inverters. However, the characteristic of those multi-phase SVPWM has not been studied profoundly yet.…”