Simulation Modelling on Space Vector Modulated Quasi Z-Source Inverter Fed PMSM

Abstract: A three level inverters with single quasi z-source fed PMSM motor drive is proposed in this project .The proposed inverter has the main features in that the output voltage can be bucked or boosted and in-phase with the input voltage. The quasi z-source concept can be applied to all dc-ac, ac-dc and dc-dc power conversion whether two-level or multi-level. The input voltage and output voltage share the common ground, the size of the inverter is reduced, and it operates in a continuous current mode. This paper presents control of a quasi z-source neutral point clamped inverter using the space vector modulation technique. The operating principles and a steady state analysis are presented .The simulation results verified that the inverter has the lower input current harmonics distortion, a high efficiency, as it makes possible to avoid voltage spikes on the switches.

Keywords: Buck-Boost, Neutral Point Clamped (NPC) Inverter, Space Vector Modulation (SVM), Quasi Z-Sour Inverter.