用于FES的电机直驱式操动机构设计研究

Design and Verification of Motor Direct-driven Actuator for FES

为克服现有快速接地开关受环境影响大等缺点,设计研究了一套电机直驱式操动机构。电机直驱式操动机构包括机械传动部分、电机主电路部分、用于控制的数字信号处理器(DSP)极其外围电路。电机主电路部分包括整流电路、电容储能电路、逆变电路。DSP采用TMS320F28335,其外围电路包括IGBT功率驱动板、电流采集电路、速度和位置采集电路。在MATLAB/Simulink中搭建了整个系统的控制算法,仿真结果表明设计的电机直驱式操动机构能满足FES合闸操作的要求,同时配置有该电机直驱操动机构的FES进行了特性试验,合闸速度满足参数要求,验证了该机构设计的正确性。

A motor direct-driven actuator was designed to enhance the performance of fast earth switch （FES）. This motor direct-driven actuator includes mechanical drive, main circuit of motor, and digital signal processor （DSP） for control with peripheral circuits. And the main circuit section of motor includes a rectifier circuit, a capacitor discharge circuit, and an inverter circuit. The DSP uses the TMS320F28335 from Texas Instruments, and its peripheral circuit includes an IGBT power driver hoard, a current acquisition circuit, and a speed/position acquisition circuit. The control algorithm of whole system was simulated in MATLAB/Simulink, and the results indicate that the motor direct-driven actuator can meet the requirements for FES closing operation. In addition, characteristic test of an FES equipped with the motor direct-driven operating mechanism showed that its closing speed meets the requirements of parameters, verifying the correctness of the design.