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A Hybrid Three-Level ZVZCS Converter for Photovoltaic Power Connecting to MVDC Collection System

Author

Listed:
  • Xiaokun He

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Renjie Hu

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Wu Chen

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

Compared with the medium voltage ac (MVAC) collection system, the medium voltage dc (MVDC) one for renewable energy sources has many advantages. High-power dc/dc converters are one of the key stages of the MVDC collection system to boost the voltage generated by photovoltaic or wind turbine. A novel hybrid three-level dc/dc converter utilizing a blocking capacitor to realize zero-voltage zero-current-switching (ZVZCS) is proposed. A higher overall efficiency can be achieved by reducing conduction losses. Detailed experimental results on a scaled-down hardware prototype rated at 150 V/750 V/1 kW are demonstrated to verify the proposed converter performance.

Suggested Citation

  • Xiaokun He & Renjie Hu & Wu Chen, 2022. "A Hybrid Three-Level ZVZCS Converter for Photovoltaic Power Connecting to MVDC Collection System," Energies, MDPI, vol. 15(15), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5365-:d:870663
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    Cited by:

    1. Seyed Shahriyar Taghavi & Mahdi Rezvanyvardom & Amin Mirzaei & Saman A. Gorji, 2022. "High Step-Up Three-Level Soft Switching DC-DC Converter for Photovoltaic Generation Systems," Energies, MDPI, vol. 16(1), pages 1-22, December.

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