基于非线性反馈的光伏模拟器控制策略  

NONLINEAR FEEDBACK CONTROL STRATEGY FOR PHOTOVOLTAIC SIMULATOR

作　　者：张继元[1,2] 宁佳 舒杰[1,2] 王浩 丁建宁[3] Zhang Jiyuan;Ning Jia;Shu Jie;Wang Hao;Ding Jianning(Key Laboratory of Renewable Energy,Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;Jiangsu Innovation Center of Photovoltaic Science and Engineering,Changzhou 213164,China)

机构地区：[1]中国科学院广州能源研究所可再生能源重点实验室,广州510640 [2]中国科学院大学,北京100049 [3]江苏省光伏科学与工程协同创新中心,常州213164

出　　处：《太阳能学报》2019年第7期1920-1927,共8页Acta Energiae Solaris Sinica

基　　金：广州市创新平台建设与共享专项(201509010018);佛山市科技创新项目(2016AG10011)

摘　　要：针对光伏输出Ⅰ-Ⅴ曲线非线性特征,对系统的动态调节过程进行理论分析,并提出基于非线性反馈的PWM整流型光伏模拟器非线性控制策略。该方法采用输入/输出线性化的控制方法设计电流内环,以消除整流器输入有功、无功电流耦合对系统的影响,实现精确解耦控制;直流电压外环采用基于误差反馈的自抗扰控制器,能在提升系统响应速度和抗干扰能力同时,保证较宽电压范围内稳定运行。通过搭建30 kW光伏模拟器样机进行验证,仿真对比和实验结果表明所述策略具有较好的控制效果。Aiming at theⅠ-Ⅴoutput characteristic curve of photovoltaic mathematical mode,this paper analyzes the dynamic adjustment process theoretically,and proposes a comprehensive nonlinear feedback control strategy for PV simulator appling to three-phase voltage source PWM rectifier.The current loop is designed by input/output linearization control method,realizing precise decoupling the active and reactive current and eliminate the negative effect;The active disturbance rejection control based on error feedback control is apply to DC voltage loop,it improve the system response speed and ability to resist disturbance,meanwhile enhance stablility in the widely voltage range.Through constructing the 30 kW photovoltaic simulator prototype experiments,simulation and experimental results validate the correctness and feasibility of the proposed method.

关 键 词：光伏效应 PWM整流器 非线性控制系统 线性化 干扰抑制 

分 类 号：TM615[电气工程—电力系统及自动化]