Optimal design of the inductor in Z-source inverter with single phase shoot-through SVPWM strategy

Citations Over TimeTop 19% of 2010 papers

Abstract

The SVPWM strategy based on single phase shoot-through in Z-source inverter has many advantages, such as higher equivalent operating frequency, smaller ripple of Z-source inductor current and smaller volume and weight of Z-source network. The optimal design of the inductor in Z-source inverter based on this modulation strategy is carried out in this paper. Firstly, the SVPWM strategy of Z-source inverter is achieved by modifying the traditional SVPWM strategy of Voltage-source inverter. Then the waveform and ripple expression of Z-source inductor current can be got quantitatively. The Z-source inductor is designed for a 3kVA Z-source inverter prototype. At last, by experiments, it is verified that the ripple of the designed inductor current satisfies all the constraints, this design method is feasible and provides theoretical basis for designing the Z-source inductor.

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