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This work investigates the use of hybrid switched capacitor converter (HSCC) topologies with wide bandgap devices to achieve high-efficiency DC-DC power conversion with high voltage gain, to achieve medium voltage DC output. This class of converter may be useful for several applications that utilize a medium voltage bus: including grid-tied renewable energy, residential areas, data center complexes, and even electric ships. The recent availability of high-performance wide bandgap devices is a key enabler for the use of this kind of power converter. This chapter provides a theory of operation, describes a likely method of control, and demonstrates operation with three hardware prototypes. One of these prototypes achieved a high voltage gain of >20 and an output of 10 kV / 4.96 kW of power delivered to a resistive load with 97.9% conversion efficiency.

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Hybrid Switched Capacitor Converters with WBG Devices for Medium Voltage, High Power Density Applications

  • 章节

  • 发表日期：

    2025年

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  • Jason C. Neely,
  • Joshua Stewart,
  • Collin Burt,
  • Andrew Binder

摘要

This work investigates the use of hybrid switched capacitor converter (HSCC) topologies with wide bandgap devices to achieve high-efficiency DC-DC power conversion with high voltage gain, to achieve medium voltage DC output. This class of converter may be useful for several applications that utilize a medium voltage bus: including grid-tied renewable energy, residential areas, data center complexes, and even electric ships. The recent availability of high-performance wide bandgap devices is a key enabler for the use of this kind of power converter. This chapter provides a theory of operation, describes a likely method of control, and demonstrates operation with three hardware prototypes. One of these prototypes achieved a high voltage gain of >20 and an output of 10 kV / 4.96 kW of power delivered to a resistive load with 97.9% conversion efficiency.