SiC MOSFET驱动技术及其在电力系统中的应用

摘要

The drive circuit of SiC MOSFET in grid-connected inverter and power electronic transformer was designed, the double pulse test platform was built to test gate driver, and then the characteristics and advantages of resonant gate drive circuit were introduced.The principle of overcurrent protection of SiC MOSFET in power system was analyzed in detail.Two overcurrent protection schemes were proposed, and the in feasibility was demonstrated.Finally, several common applications of SiC MOSFET in power system were introduced, and their prospects were summarized.%设计了并网逆变器以及电力电子变压器中SiC MOSFET功率器件的驱动电路, 搭建了用于测试驱动电路的双脉冲测试平台, 并且介绍了谐振门极驱动电路的工作原理、特点以及优势;还对电网中SiC MOSFET的过电流保护原理进行了详细分析, 进而给出了两种过电流保护方案, 并且论证了两种方案的可行性.最后, 介绍了几种常见的SiC MOSFET在电网中的应用实例, 并对其应用进行总结与展望.