Abstract
This paper explains Z source inverter (ZSI) having unique impedance network with its operation, control and simulation. Traditional current source and voltage source inverter (VSI and CSI) have various conceptual and theoretical barriers with some limitations. All these are overcome by ZSI. It provides a novel power conversion concept. Z source concept can be applied to all ac-ac, dc-dc, ac-dc, dc-ac power conversion. In ZSI, modified PWM signal is used, which accommodates shoot through (ST) signal in order to buck or boost the DC input voltage, from a value between zero and infinity. To facilitate understanding of Z source inverter modulation, this paper work presents a detailed analysis, showing how Z source inverter is more advantageous than traditional current and voltage source inverter.
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