摘要
通过分析Buck型交流斩波电压调节器的工作原理和电路结构,建立了该电压调节器状态空间平均模型和小信号动态模型。在此基础上,利用输入电压前馈比例控制结合输出电压反馈控制的方法设计了系统控制器。仿真实验表明,所设计的交流斩波电压调节器与传统晶闸管相控调压器相比具有响应速度快,谐波含量小的显著优点;同时在输入电压波动时,输出电压稳定鲁棒性强。仿真实验结果验证了前馈-反馈控制器的有效性。
The state space average model and the small signal dynamic model were obtained through the analysis of the principles and the characteristics of the Buck type AC chopper voltage regulator. The feedforward-feedback PWM controller was designed to regulate the output voltage. In comparison with the thyristor phase controlled voltage regulator,the proposed voltage regulator has advantages such as fast dynamic speed and low total harmonic distortion. In addition,the output voltage has stability robustness against the input voltage swell and sag. The simulation results verify the validity of the feedforward-feedback controller.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2010年第4期983-985,1013,共4页
Journal of System Simulation
