Zero‑current‑switching full‑bridge DC/DC converter with reduced conduction losses for renewable energy MVDC collection systems

Xiaokun He; Renjie Hu

Zero‑current‑switching full‑bridge DC/DC converter with reduced conduction losses for renewable energy MVDC collection systems

Xiaokun He

Renjie Hu

Vol. 22, No. 3, pp. 420-428, Mar. 2022

10.1007/s43236-021-00381-y

Medium voltage DC

zero-current-switching

Blocking capacitor

Circulating current

Abstract

When compared to the conventional AC collection system, the DC collection system for renewable energy sources presents lots of advantages. High power high-voltage DC/DC converters are essential equipment for medium voltage DC (MVDC) grid. A novel zero-current-switching full-bridge DC/DC converter is proposed in this paper. In particular, a blocking capacitor is introduced to rapidly decay the circulating current to zero. Hence, both the switching loss and conduction loss can be reduced. A scaled-down 120 V/1.2 kV, 2 kW prototype was built to validate the effectiveness of the proposed converter.

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Cite this article

[IEEE Style]

X. He and R. Hu, "Zero‑current‑switching full‑bridge DC/DC converter with reduced conduction losses for renewable energy MVDC collection systems," Journal of Power Electronics, vol. 22, no. 3, pp. 420-428, 2022. DOI: 10.1007/s43236-021-00381-y.

[ACM Style]

Xiaokun He and Renjie Hu. 2022. Zero‑current‑switching full‑bridge DC/DC converter with reduced conduction losses for renewable energy MVDC collection systems. Journal of Power Electronics, 22, 3, (2022), 420-428. DOI: 10.1007/s43236-021-00381-y.