升压型功率因数校正变换器的改进线性自抗扰电压环控制  

Modified Linear Active Disturbance Rejection Control-based Voltage-loop Control for Boost PFC Converter

作　　者：刘鑫磊 张犁 刘淇 LIU Xinlei;ZHANG Li;LIU Qi(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China)

机构地区：[1]河海大学能源与电气学院,江苏省南京市211100

出　　处：《电网技术》2023年第12期5238-5246,共9页Power System Technology

基　　金：国家自然科学基金项目(52177176);高等学校学科创新引智计划项目(B14022)。

摘　　要：为进一步提高升压型功率因数校正变换器的抗干扰能力和动态响应性能,提出了一种基于线性自抗扰(linear active disturbance rejection control,LADRC)的改进控制策略。在线性扩张状态观测器(linear extended state observer,LESO)的基础上引入广义扰动补偿算子(generalized disturbance compensation operator,GDCO)使观测器快速预估补偿扩张状态,在不引入高频噪声的前提下提高了观测器的灵敏度,为电压外环控制器增加了自由度。详细分析了不同GDCO参数对系统抗扰性能和动稳特性影响,并给出了参数选择方法。搭建了1kW的升压型功率因数校正变换器样机,并进行了仿真和实验验证,结果表明相比于电压外环采用传统PI控制或线性自抗扰控制,所提LADRC-GDCO控制可在同样网侧电流谐波下,进一步提升了变换器的动态响应和抗干扰能力。To further improve the anti-interference ability and dynamic performance of a Boost power factor correction converter(Boost PFC),an improved control strategy based on the linear active disturbance rejection control(LADRC)is proposed.The generalized disturbance compensation operator(GDCO)is introduced on the basis of the linear extended state observer(LESO)which realize the observer's fast estimation and compensation of the extended state.The sensitivity of the observer is improved without introducing the high-frequency noise,and increases the degree of freedom for the outer-loop voltage controller.The influence of different GDCO parameters on the anti-interference performance,the dynamic and stable characteristics of the system is discussed in detail,and the parameter selection principle is also given.A 1 k W Boost PFC converter is built.Simulation and Experimental results indicate that,compared with the conventional PI and LADRC outer voltage loop control,the proposed LADRC-GDCO voltage loop control is able to improve the anti-interference ability and the dynamic response with the same current THD value.

关 键 词：升压型功率因数校正变换器 线性自抗扰控制 广义扰动补偿算子 动态响应 

分 类 号：TM721[电气工程—电力系统及自动化]