Power Control Equipment for Control Rod Drive Mechanisms Based on IGBT in Nuclear Power Plant

The closed-cycle control technology, Pulse-Width Modulation（PWM） technology and programmable logic controller（PLC） technology with the function of maturity are applied in control and power device for control rod drive mechanism in nuclear plant. The functions of the device are described as following: the control to the IGBT within control circuit is effective,the current of control object is adjustable linearity, and the discharging time is adjustable. Through development of this device, the inherent problems of native device and import device are solved. It is up to the level as control technology, performance and reliability of the import equipment.