说明：  文首先谈论了IGBT 的驱动电路的基本要求和过流保护分析，然后运用IGBT 集电极退饱和原理，提供了一个采用分立元件构成的IGBT 驱动电路和过流保护电路。仿真 和试验结果证明了所设计驱动电路的可行性
(Paper first discussed the IGBT drive circuit of the basic requirements and overcurrent protection, and then use the collector IGBT de-saturation principle, provides a use of discrete components of the IGBT driver circuit and over-current protection circuit. Simulation and experimental results prove the feasibility of the designed drive circuit)