摘要
针对典型的Boost变换器,为使整个电路有更好的动态性能和静态性能,需对控制网络进行补偿设计。以Boost变换器开关管开通和关断状态列写状态方程,建立小信号模型分析控制环路的幅频特性和相频特性,通过定量计算得出PID补偿器的参数,使变换器存在足够的相位裕度和所需穿越频率,保证系统稳定工作,并通过仿真验证了设计的正确性。
For the typical Boost converter,in order to make the whole circuit have a better dynamic performance and static performance,the entire control loop needs to design compensator.The state equation of the Boost converter is established to analyze its small signal model and to build the Bode diagram of the loop gain amplitude-frequency characteristic and phase-frequency characteristic in continuous conduction mode.The parameters of the PID compensator are obtained by the quantitative calculation,so that the converter has sufficient phase margin and the required crossing frequency to ensure the stable operation.Finally,the correctness of the design is verified through the simulation.
作者
沈方健
冉华军
余益
张展鹏
SHEN Fangjian;RAN Huajun;YU Yi;ZHANG Zhanpeng(Hubei Micro-grid Engineering Technology Research Center(China Three Gorges University),Yichang 443002,China;State Grid Hubei Maintenance Company,Wuhan 430050,China)
出处
《电工材料》
CAS
2021年第3期40-44,共5页
Electrical Engineering Materials
