Asymmetrical PWM split‑phase boost PWM AC‑AC converter with inherent output voltage balancing

Van-Dai Bui; Honnyong Cha

Asymmetrical PWM split‑phase boost PWM AC‑AC converter with inherent output voltage balancing

Van-Dai Bui

Honnyong Cha

Vol. 24, No. 1, pp. 20-31, Jan. 2024

10.1007/s43236-023-00717-w

Asymmetrical PWM

Boost converter

Direct AC-AC converter

Voltage balancing

Dual output

Split-phase

Abstract

This paper introduces a direct PWM split-phase boost ac-ac converter with a high voltage gain, natural output voltage balancing, no duty-ratio limitation, and no commutation problem. Although under unbalanced load conditions, the two output voltages still are equal without auxiliary circuits and/or any dedicated controller. Moreover, the input current ripple is significantly decreased due to the interleaving effect. With a proper asymmetrical PWM scheme, the converter can work in the entire range of the duty cycle. In addition, the commutation (dead-time) problem is eliminated. The operation of the proposed structure is validated with a 500 W prototype converter. Experiment results obtained under various load conditions such as inductive, nonlinear, extreme load, and load scenarios are also provided.

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Cite this article

[IEEE Style]

V. Bui and H. Cha, "Asymmetrical PWM split‑phase boost PWM AC‑AC converter with inherent output voltage balancing," Journal of Power Electronics, vol. 24, no. 1, pp. 20-31, 2024. DOI: 10.1007/s43236-023-00717-w.

[ACM Style]

Van-Dai Bui and Honnyong Cha. 2024. Asymmetrical PWM split‑phase boost PWM AC‑AC converter with inherent output voltage balancing. Journal of Power Electronics, 24, 1, (2024), 20-31. DOI: 10.1007/s43236-023-00717-w.