Gallium Nitride (GaN)-Based Multiport Multilevel Converter/Inverter

Technology #11635

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Researchers
Issa Batarseh, Ph.D.
Mohamed Tamasas Elrais
Patent Protection

US Patent Pending

Key Points

  • A multiple-port multilevel power converter/inverter supports efficient power conversion between one type of voltage or current to another
  • Uses flying capacitor multilevel converters and advanced GaN switches
  • Prototype has achieved 98.7 percent efficiency and very low harmonic pollution

Abstract

The University of Central Florida invention is a multiple-port, multilevel power converter/inverter with multiple bi-directional power ports. The invention supports efficient power conversion between one type of voltage or current to another (DC-to AC or AC-to-DC) and one level of voltage or current within the same type to another level. As an example, one converter/inverter has a DC input port, a bidirectional DC port, and an AC output port using a Flying Capacitor Multilevel (FCML) inverter based on the advanced Gallium Nitride (GaN) switches. Recently, the FCML inverter has shown a superior ability for power conversion with high power density, improved THD, and efficiency. These multiple port power converters/inverters support various applications, including battery and photovoltaic (PV) grid integration and standalone AC load.