Optimization Design of Parameters of Z-source Inverter based on the Small-signal Model using State-space Averaging Method
Abstract
Optimization of inverter’s parameters is one of the key issues in improving the inverter’s performance. Z-source inverter is a new kind of topological structure. The research on optimization of its impedance network’s Parameters is of great value in theory and application. First, the state-space averaging method is used to establish the small-signal model of impedance network capacitor voltage and obtain the transfer function from the direct duty cycle to the impedance network capacitor voltage. And the influence of inductor and capacitor’s parameters changes on dynamic performance of capacitor voltage’s step response is analyzed based on this. At the same time, the optimized principle of impedance network’s parameters is proposed. Finally, the validity of the proposed optimized principle is proved by the simulation results.
Keywords
Z-source inverter; state-space averaging method; small-signal model; parameter optimization
DOI
10.12783/dtcse/iccae2016/7168
10.12783/dtcse/iccae2016/7168
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