模糊控制在光伏发电最大功率点跟踪中的应用_彭文丽

电工电气 (2013 No.1)

产品与应用

模糊控制在光伏发电最大功率点跟踪中的应用

彭文丽1,席自强1,张佳2

(1 湖北工业大学 电气与电子学院,湖北 武汉 430068;

2 广东电网公司佛山供电局,广东 佛山 528000)

摘 要:介绍了光伏电池的基本特性和最大功率点的原理及其运用的一些常规方法。针对模糊控制具有适应性强、鲁棒性好、不依赖被控对象精确模型的特点。提出了规则生成、模糊决策与推理。在此基础上建立仿真模型,对模糊控制器进行验证和分析。仿真结果表明,当外部环境发生变化的时候,系统能够迅速跟踪此变化,使系统始终工作在最大功率点附近,并具有较好的稳定性,且基于模糊策略的光伏系统动、稳态性能优良。

关键词:光伏电池;最大功率点跟踪;模糊控制;Matlab仿真中图分类号:TM615 文献标识码:A 文章编号:1007-3175(2013)01-0023-04

Applications of Fuzzy Control in MPPT of Photovoltaic Power Generation

PENG Wen-li1, XI Zi-qiang1, ZHANG Jia2

(1 School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China;

2 Foshan Power Supply Bureau of Guangdong Power Grid Company, Foshan 528000, China)

Abstract: Introduction was made to basic characteristics of the photovoltaic cells and the maximum power point principle and someregular methods of its application. Aiming at features of fuzzy control with strong adaptability, good robustness and independent of the controlled object accurate model, this paper proposed rules generation, fuzzy discussion making and reasoning. On the basis of this, the simulation model was established and the fuzzy controller was carried out rectification and analysis. The simulation result shows that on change of external environment, the system can quickly trace the change, making system always working around maxi-mum power point with fine stability and dynamic stability performance is fine for photovoltaic system based on fuzzy strategy. Key words: photovoltaic cell; maximum power point tracking; fuzzy control; Matlab simulation

基金项目:湖北省自然科学基金重点项目(2010CDA018)

作者简介:彭文丽(1987- ),女,硕士研究生,主要研究方向为光伏发电;

席自强(1960- ),男,教授,博士,主要研究方向为电能质量控制。

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