- 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
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.