基于dSPACE的三相PWM整流器建模与控制

摘要

为实现基于dSPACE平台对PWM整流器的实时仿真控制,在a,b,c坐标下根据定义的二值逻辑开关函数建立电压型PWM整流器的动态函数方程,并利用该方程在仿真平台Matlab/Simulink下建立相应的数学模型.采用dSPACE开发测试平台.设计基于DS1104控制器的硬件接口电路,对采用PM300DVA120模块.容量达100 kVA的PWM整流器系统进行了实时控制.实验结果表明,该模型可实现对PWM整流器电流的快速精确控制,系统响应时间仅为数毫秒,反映出dSPACE平台对PWM整流器系统控制的优异性能.%In order to implement the real time control to pulse width modulation (PWM) rectifier system based on devel-opment and test platform dSPACE,the dynamic functions of three phase Boost-type PWM rectifier are established ac-cording to the logic switch function defined on the basis of a,b ,c coordinate.Then the mathematic model of PWM recti-fier circuit is built with simulation platform Matlab/Simulink.With the development and measurement platform of dSPACE,the hardware interface circuit is designed based on DS1104 controller and the real-time control is implement-ed to a 100 kVA PWM rectifier system which is composed of insulated gate bipolar transistors (IGBT)module PM3OODVA120.The experimental results indicate that the system response time is only several millisecond and the con-trol to PWM rectifier current is fast and accurate,the control with dSPACE platform to PWM rectifier system is excellent according to the experimental waveforms.