F Patkar, Liverpool John Moores University, UK
From session: Modulation Schemes, From: PEMD 2012: Power Electronics, Machines and Drives Conference, 27 - 29 March 2012, Bristol, UK
29 March 2012 Power channel
Multilevel drive supply can be realised in two different ways, by using either a conventional multilevel single-sided supply configuration or with a dual-inverter supply topology. The second structure is simpler for practical realisation, since the problem of capacitor voltage balancing does not arise. This paper develops a space vector PWM (SVPWM) algorithm for the dual-inverter six-phase supply, based on two two-level six-phase voltage source inverters (VSIs), feeding a symmetrical six-phase load. In the algorithm, each inverter is controlled using SVPWM technique that was previously developed for a single-sided supply configuration. A multilevel output voltage is produced for a certain range of modulation index. The performance of the algorithm is verified through simulations and experiments.