三相高功率PWM整流器能量双向传输的研究

Research on Energy Bidirectional Transmitting for Three-phase PWM Rectifier

通过分析三相电压PWM整流器的工作原理,建立整流器在同步旋转坐标系下数学模型,研究了一种基于双闭环结构(电压外环和电流内环)的电压型PWM整流器可逆运行的控制策略。该方法利用电压调节器控制整流器的功率流向和大小,电流调节器控制交流侧输入电流跟踪正弦输入电压,从而实现PWM变换器的单位功率因数和能量的双向传输的性能。同时给出了电压调节器和电流调节器的设计方法。最后,仿真和实验结果表明:系统在整流和逆变状态下都具有较高的动静态性能、高功率因数和电能的双向传输。

By analyzing the basic principle of the three-phase voltage source PWM rectifier（VSR）, this paper establishes its mathematical model in synchronous reference frame .The control scheme of hi- direction operation of three-phase PWM rectifer baseing on doubleloop （voltage outer loop and current inner loop ） is studied.When Voltage regulator controls rectifier＇s power flow and size,and current regualtor control ac current tracking sinusoidal input voltage,unity power factor and energy bi- directional tramission of PWM rectifier are achieved. At the same time,the design method of Voltage regulator and current reguahor is given, finally, simulation and experimental result show system has superior dynamic performance and high factor operation whatever in rectifier and inverter mode.