Multilevel Z‐Source Inverters

Power electronics technology is utilized to regulate the flow of electric energy, by supplying voltages and currents in a form that is optimally suited for user loads. This chapter shows the typical connection of a Z‐source inverter (ZSI) to the load. The ZSI consists of a unique impedance network that connects the source and the load or another converter. The ZSI is an attractive option for the power conversion given that the theoretical output voltage can be any value regardless of the input. The ZSI provides an additional state when the load is shorted, enabling the inverter to possess nine switching states. The ZSI can be configured into a voltage source inverter or current source inverter depending on the input supply. Three‐level neutral‐point‐clamped inverters possess notable advantages like higher output waveform quality, lower voltage stress, lower common mode voltage, and lower semiconductor losses.