Single-Phase Z-Source AC/AC Converter with Wide Range Output Voltage Operation

Minh-Khai Nguyen; Young-Gook Jung; Young-Cheol Lim

Single-Phase Z-Source AC/AC Converter with Wide Range Output Voltage Operation

Minh-Khai Nguyen

Young-Gook Jung

Young-Cheol Lim

Vol. 9, No. 5, pp. 736-747, Sep. 2009

10.6113/JPE.2009.9.5.736

Z-source converter

PWM AC/AC converter

Single-phase matrix converter

Commutation strategy

Wide range output voltage operation

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Abstract

A new type of single-phase Z-source AC/AC converter based on a single-phase matrix converter is proposed in this paper. The proposed single-phase Z-source AC/AC converter has unique features; namely that the output voltage can be bucked and in-phase/out-of-phase with the input voltage; that the output voltage can be boosted and in-phase/out-of-phase with the input voltage. The converter employs a safe-commutation strategy to conduct along a continuous current path, which results in the elimination of voltage spikes on switches without the need for a snubber circuit. The operating principles of the proposed single-phase Z-source AC/AC converter are described, and a circuit analysis is provided. To verify the performance of the proposed converter, a laboratory prototype based on a TMS320F2812 DSP was constructed. The simulation and the experimental results verified that the output voltage can be bucked-boosted and in-phase with the input voltage, and that the output voltage can be bucked-boosted and out-of-phase with the input voltage.

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Cite this article

[IEEE Style]

M. Nguyen, Y. Jung, Y. Lim, "Single-Phase Z-Source AC/AC Converter with Wide Range Output Voltage Operation," Journal of Power Electronics, vol. 9, no. 5, pp. 736-747, 2009. DOI: 10.6113/JPE.2009.9.5.736.

[ACM Style]

Minh-Khai Nguyen, Young-Gook Jung, and Young-Cheol Lim. 2009. Single-Phase Z-Source AC/AC Converter with Wide Range Output Voltage Operation. Journal of Power Electronics, 9, 5, (2009), 736-747. DOI: 10.6113/JPE.2009.9.5.736.