摘要
介绍了PWM整流器的数学模型,在此模型基础上详细介绍了双闭环控制,即电流内环和电压外环,以实现单位功率因数正弦波电流控制。按此方法确定PI参数的办法,并给出Matlab仿真和实验结果,波形证明了参数选取的正确性和可行性。为实际工程中确定主电路参数和系统设计提供可靠的依据,对三相PWM变流系统设计有实际意义。
Simplified mathematic model of PWM rectifier is introduced. Based on the model, the double closed -loop voltage and current adjustor are was established and expounded. The PI parameters of current and voltage adjustor of double closed- loop are designed by simplification,and the simulation results show it is correct and reasonable. This model provid a basis for the determination of parameters in the main circuit during an actual system design and contributed to the design of three- phase PWM rectifier in engineering.
出处
《现代电子技术》
2007年第10期170-171,188,共3页
Modern Electronics Technique
