摘要
建立了三相PWM整流器的数学模型,通过Park变换将abc三相静止坐标系转换到dq两相旋转坐标系,设计了三相PWM整流器的双闭环控制系统,同时给出了电压外环和电流内环的PI调节器的设计方法。采用前馈解耦控制方法,实现了输出稳定的直流电压,提高了系统的鲁棒性。最后通过MATLAB/Simulink对三相PWM整流器模型进行了仿真,证明了所建立模型的正确性。
The mathematical model of three-phase PWM rectifier is established, and the abc three-phase stationary coordinate system is transformed into dq two-phase rotating coordinate system by Park transformation. A double closed- loop control system of three-phase PWM rectifier is designed, and the design method of PI regulator for the voltage outer loop and the current inner loop is given simultaneously. A stable output DC voltage is realized and the robustness of the system is improved by the feedforward decoupling control method. Finally, the three-phase PWM rectifier model is simulated by MATLAB / Simulink, which proves the correctness of the model.
出处
《仪表技术》
2017年第9期30-33,共4页
Instrumentation Technology
关键词
三相PWM整流器
PI调节器
前馈解耦控制
仿真
three-phase PWM rectifier
PI regulator
feedforward decoupling control method
simulation
