Study of Z-source Inverter using Different Control Techniques

Abstract

This paper represents study of Z-Source Inverter using different controlling techniques like simple boost control, maximum boost control, maximum constant boost control and space vector control. All the techniques were implemented in MATLAB/SIMULINK, also relation with voltage gain versus modulation index and voltage stress versus voltage gain were analyzed in detail and verified. It was observed that gain of Z-source inverter can be varied by varying its parameters like modulation index and shoot-through duty ratio. The comparison shows that even though simple boost control technique was having higher boost factor, Maximum constant boost control technique is most suitable in PWM technique.