A Novel Modified Space Vector Pulse Width Modulation Technique for High Performance Z-Source Inverter

摘要

The high performance Z-source inverter is a new topology, which provides the circuit with bi-directional power flow ability. This inverter can overcome the limitations of the basic Z-source inverter and be used as an interface between energy storage and supply networks. A novel modified space vector pulse width modulation (SVPWM) algorithm for high performance Z-source inverter is presented here, which improves the voltage gain during the boost mode. In the proposed modified SVPWM the shoot-through states are evenly assigned to each phase within zero state. So zero voltage time period is diminished for generating a shoot-through time, and active states are unchanged. Simulation and experimental results are presented to demonstrate the new features.