DC-DC变换补偿网络PI近似工程设计  

PI Approximate Engineering Design of DC-DC Conversion Compensation Network

作　　者：巫付专[1] 向乃皇 周元浩 陈蒙娜 WU Fuzhuan;XIANG Naihuang;ZHOU Yuanhao;CHEN Mengna(Henan Advanced Control and New Energy Technology International Joint Laboratory,Zhongyuan University of Technology,Zhengzhou 451191,China)

机构地区：[1]中原工学院、河南省先进控制与新能源科技国际联合实验室,河南郑州451191

出　　处：《电子科技》2023年第5期16-22,共7页Electronic Science and Technology

基　　金：国家自然科学基金(62076222,61876209)。

摘　　要：针对DC-DC变换补偿网络设计中试凑法的盲目性和理论分析的复杂性,文中根据状态空间平均法,以Buck为例对DC-DC变换系统进行建模。在满足幅值裕度和相位裕度的情况下,推导出补偿网络kp、ki与系统参数占空比D、电感L和电容C之间的关系,并在此基础上提出了一种工程近似的方法。通过PSIM仿真和基于DSP搭建的样机平台对所提方法进行验证,结果表明无论是在电压单闭环的情况下还是在电压外环电流内环的情况下,此工程近似法与理论分析法即传统控制方法得出的结果基本一致。此工程近似法避免了试凑法的盲目性和理论分析的复杂性,为实际工程中快速设计补偿网络提供了一种快捷的方法和思路。In view of the blindness of the trial-and-error method in the design of DC-DC transform compensation network and the complexity of theoretical analysis,based on the state space average method,this study takes Buck as an example to model the DC-DC transformation system.Under the condition that the amplitude margin and phase margin are satisfied,the relationship between the compensation network k p,k i and the system parameter duty ratio D,inductance L and capacitance C is derived,and on this basis,an engineering approximation method is proposed.The proposed method is verified by PSIM simulation and a prototype platform based on DSP.The results show that the results obtained by this engineering approximation method are basically consistent with the theoretical analysis method,that is,the traditional control method,no matter in the case of voltage single closed loop or in the case of voltage outer loop and current inner loop.This engineering approximation method avoids the blindness of trial and error and the complexity of traditional control methods,which is the complexity of traditional control methods,and provides a quick method and idea for the rapid design of compensation networks in actual projects.

关 键 词：DC-DC变换 补偿网络 试凑法 工程近似 状态空间平均法 幅值裕度 相位裕度 PSIM仿真 

分 类 号：TN702[电子电信—电路与系统]