基于分数阶PI的三相并网整流器调压优化策略  被引量:1

DC voltage regulation optimization strategy of three-phase grid-connected rectifier based on fractional-order PI regulator

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作  者:蒋德珍 陈璐 石荣亮 付一木 JIANG Dezhen;CHEN Lu;SHI Rongliang;FU Yimu(State Grid Shandong Electric Power Company,Jinan 250118,China;State Grid Beijing Electric Power Company,Beijing 100032,China;College of Mechanical and Control Engineering,Guilin University of Technology,Guilin 541006,China)

机构地区:[1]国网山东省电力公司,济南250118 [2]国网北京市电力公司,北京100032 [3]桂林理工大学机械与控制工程学院,广西桂林541006

出  处:《桂林理工大学学报》2023年第2期318-325,共8页Journal of Guilin University of Technology

基  金:广西自然科学基金青年基金项目(2020GXNSFBA297124);广西自然科学基金面上项目(2021GXNSFAA220038)。

摘  要:直流侧电压具有优良的动态响应与抗扰动特性是衡量三相并网整流器性能的关键。本文论述了一种基于分数阶PI调节器(FOPI)的整流器直流电压双闭环控制策略,FOPI相较于PI多了一个控制自由度,故可利用FOPI提升三相并网整流器直流电压的动态性能与抗扰动能力。首先,建立三相并网整流器在dq坐标系下的数学模型,给出了基于传统PI/FOPI的直流电压双闭环控制策略;其次,在分析水循环算法(WCA)原理的基础上,阐述了基于WCA的PI与FOPI的参数设计方法;最后,利用MATLAB仿真软件建立三相并网整流器的仿真模型,进行了相应的案例仿真与实验测试对比验证。仿真与实验对比结果表明,所述FOPI比传统PI在改善三相并网整流器直流电压的动态响应特性和抗扰动性能两个方面均更具优越性。The key to measure the performance of three-phase grid-connected rectifier(TGR)is that the DC voltage has both excellent dynamic response and anti-disturbance characteristics.A TGR DC voltage dual closed-loop control strategy based on fractional-order PI regulator(FOPI)is expounded in this paper.FOPI has one more control degree of freedom than PI,so FOPI can be used to improve both the dynamic performance and anti-disturbance capability of TGR DC voltage.Firstly,the mathematical model of TGR in dq coordinate system is established,and the DC voltage dual closed-loop control strategy based on PI/FOPI is given.Then,the parameter design methods analyzed by WCA for both PI and FOPI are expounded.Finally,the grid-connected simulation model of TGR is established by MATLAB,and corresponding case simulation as well as experimental comparison verification are carried out.Both simulation and experimental comparison results show that FOPI is better than traditional PI to improve the dynamic response characteristics and anti-disturbance performance of TGR DC voltage.

关 键 词:并网整流器 直流电压 分数阶PI调节器 动态性能 抗扰动能力 水循环算法 参数设计 

分 类 号:TN830[电子电信—信息与通信工程] TM464[电气工程—电器]

 

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