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http://dx.doi.org/10.7471/ikeee.2019.23.1.53

PWM Control of Reduced Switch Z-Source Inverter  

Kim, Seong-Hwan (Dept. of Electrical & Control Engineering, Mokpo National University)
Park, Tae-Sik (Dept. of Electrical & Control Engineering, Mokpo National University)
Publication Information
Journal of IKEEE / v.23, no.1, 2019 , pp. 53-57 More about this Journal
Abstract
In this paper, we propose a new Z-source inverter structure to reduce switching elements and PWM pulse control method. Z-network is connected between the inverter backplane and ground, rather than between the DC voltage and the inverter in an improved Z-source inverter. And the improved Z-source inverter has the advantages of limiting the capacitor inrush current and reducing the capacitor voltage stress. We have proposed a topology of a new type of switch-reduced improved Z-source inverter that reduces the number of switches from six to four in an improved Z-source inverter and developed a PWM control method suitable for the proposed topology. The characteristics and the performance of the proposed method were verified by using PSIM simulation.
Keywords
Improved Z-Source Inverter; Switch reduced inverter; Z-network; PWM; voltage stress; PSIM;
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