线性自抗扰在光伏发电系统MPPT中的应用

高志强; 李松; 周雪松; 马幼捷; 石雪琦

引用本文:	高志强,李松,周雪松,等.线性自抗扰在光伏发电系统MPPT中的应用[J].电力系统保护与控制,2018,46(15):52-59.
	GAO Zhiqiang,LI Song,ZHOU Xuesong,et al.Design of MPPT controller for photovoltaic generation system based on LADRC[J].Power System Protection and Control,2018,46(15):52-59

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线性自抗扰在光伏发电系统MPPT中的应用
高志强¹,李松¹,周雪松¹,马幼捷¹,石雪琦²
(1.天津理工大学天津市复杂系统控制理论及应用重点实验室，天津 300384; 2.天津大学电气自动化与信息工程学院，天津 300072)

摘要:

为了保证光伏发电系统能够快速地达到最大功率点并且能够稳定运行，设计了一种基于线性自抗扰控制(LADRC)的最大功率点跟踪(MPPT)控制器。建立了光伏电池与DC-DC变换器相结合的数学模型。设计了1阶LADRC对其进行解耦控制，目的是能够快速地确定光伏电池阵列的最优输出电压，减少功率振荡。分析了MPPT控制器的设计原理。为了验证所设计的MPPT控制器的实效性与普适性，通过Matlab/Simulink进行了仿真研究。仿真实验表明，加入所设计的MPPT控制器，能够明显提高算法的跟踪速度，大大降低功率振荡，即使在外界环境变化剧烈的情况下，也能表现出良好的控制能力，通用性很强。

关键词: 光伏发电最大功率点跟踪线性自抗扰控制控制器功率振荡

DOI：10.7667/PSPC171133

分类号:

基金项目:国家自然科学基金资助项目(50877053);天津市自然科学基金资助项目(09JCYBJC07100)

Design of MPPT controller for photovoltaic generation system based on LADRC

GAO Zhiqiang¹,LI Song¹,ZHOU Xuesong¹,MA Youjie¹,SHI Xueqi²

(1. Tianjin Key Laboratory for Control Theory and Application in Complicated Systems, Tianjin University of Technology, Tianjin 300384, China;2. School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China)

Abstract:

In order to ensure that the photovoltaic generation system can reach the maximum power point quickly and operate stably, a Maximum Power Point Tracking (MPPT) controller based on Linear Auto-Disturbance Rejection Control (LADRC) is designed. This paper establishes a mathematical model of photovoltaic cell and DC-DC converter. The first order LADRC is designed to decouple and control, for the purpose of determining the optimal output voltage of the photovoltaic cell array and reducing power oscillation quickly. The design principle of MPPT controller is analyzed. In order to verify the effectiveness and universality of the MPPT controller designed, simulation experiments are carried out by MATLAB/Simulink. Simulation results show that the MPPT controller can improve the tracking speed of the algorithm and reduce the power oscillation significantly. Even if the external environment fluctuates violently, it can still show good control ability and universality. This work is supported by National Natural Science Foundation of China (No.50877053) and Natural Science Foundation of Tianjin (No.09JCYBJC07100).

Key words: photovoltaic generation MPPT LADRC controller power vibration

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