基于IGBT器件的大功率高压直流断路器数字驱动的设计

Design of Digital Drive of High Power High Voltage DC Circuit Breaker Based on IGBT Device

针对大功率多开关的应用场合,提出一种新的基于现场可编程门阵列(field programmble gate array,FPGA)高效并安全更可靠的多功能绝缘栅双极晶体管(insulated gate bipolar transistor,IGBT)数字驱动器,该驱动器能利用全面的IGBT状态检测电路、多路信号故障检测和保护电路。多开关、大功率10 kV/5 kA的断路器试验,验证了该驱动器能保证IGBT实现均压均流、温度检测等功能有效性,仅用6.4μs实现同时关断的功能,使IGBT开关过程得到优化,保障整个断路器的安全可靠。

Aiming at the application of high power multi-switch,a new multi-function IGBT digital driver based on field programmble gate array(FPGA)is proposed,which is efficient,safe and reliable.The driver can make use of the full insulated gate bipolar transistor(IGBT)state detection circuit,multi-channel signal fault detection and protection circuit.In the test of multi-switch and high power 10 kV/5 kA circuit breaker,it is proved that the driver can ensure the validity of IGBT's functions such as voltage sharing,current sharing and temperature detection.The function of simultaneous shutdown is realized in 6.4μs,the switching process of IGBT is optimized,and the safety and reliability of the whole circuit breaker is ensured.