Abstract:
The thesis deals with the recently proposed Z-source network as the dc-link circuit in DC-AC converters between the dc voltage source and the single/ three-phase inverter bridge which can boost the input voltage to any desired level without any extra additional switch. The boost is realised with the shortcircuit of all the inverter bridge switches. It proposes three new Z-source inverter topologies with reduced switch count: one single phase and two three-phase Z-source inverter topologies. The thesis also
proposes a improved control algorithm for the hybrid switchedcapacitor Cuk and Sepic derived DC-AC PWM converters.
