【摘要】 研究三相电压型PWM整流器在两相同步旋转坐标系下的数学模型,双闭环直接电流控制策略。通过Matlab软件搭建系统模型进行仿真分析,验证了控制策略的可行性。在此基础上利用DSP控制单元和IPM集成模块搭建实验平台,设计控制软件进行实验验证。实验结果表明,PWM整流器使输入电流正弦化,有效减少谐波污染,能够实现单位功率运行,改善电网质量。更多还原

【Abstract】 Mathematical model under the synchronization reference frame and dual-loop direct current control strategy of three phase voltage PWM rectifier was studied.The simulation model of PWM rectifier created by means of Matlab software verified feasibility of this control strategy.On this basis the experimental platform was created based on DSP and IPM,and control software was designed for experiment.The results show that the rectifier could effectively restrain the harmonic pollution with sinusoidal input currents,perform at the unity power factor and improve power quality.更多还原