Research on High-Voltage High-Power Aerospace Full-Bridge DC-DC Converter Based on SiC

This paper employs a 1200V SiC MOSFET as the main power switch of the converter, designing a full-bridge DC-DC converter with a DC input voltage of 350~450V, output voltage 28 V, and power 400 W. By constructing an experimental platform, the working principle of the circuit and the operational state of the SiC MOSFET circuit were verified. Addressing the needs of space solar power stations for high-voltage buses and high-power converters, the development of a new generation of power semiconductor DC-DC converters provides a design reference for future energy conversion and transmission in space solar power stations.