| 光伏并网发电系统的MPPT改进算法及其在光照突变时的仿真 |
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| 引用本文： | 李小燕,;王新,;郑飞,;张耀明.光伏并网发电系统的MPPT改进算法及其在光照突变时的仿真[J].能源技术(上海),2009(5):272-275. |
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| 作者姓名： | 李小燕 ;王新 ;郑飞 ;张耀明 |
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| 作者单位： | [1]东南大学能源与环境学院; [2]东南大学自动化学院,江苏南京210096 |
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| 基金项目： | 国家863计划项目（2006AA050203） |
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| 摘 要： | 利用MATLAB软件中的S函数编写了光照突变时光伏组件的模型，并依此建立了一个三相光伏并网发电系统的仿真模型。对传统的最大功率点跟踪（MPPT）算法进行了分析，提出了扰动观测法和电导增量法的改进算法，给出了基于光照突变时传统的恒定电压法和所提改进算法的跟踪仿真曲线，通过根据跟踪曲线的局部和总体的相对误差以及方差比较了这些算法的效果，指出改进的扰动观测法是一种特性较好并具有实用性的MPPT算法。由于仿真分析采用了三相并网运行光伏发电系统的仿真模型，得到的结论更适合作为实际应用参考。
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| 关 键 词： | 电池组件模型 三相并网光伏发电系统 最大功率点跟踪 改进跟踪算法 仿真 |
The MPPT Improved Algorithm and Simulation under Changing Irradiance of Grid-Connected PV Systems |
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| Affiliation: | LI Xiao-yan , WANG Xin , ZHENG Fei , ZHANG Yao-ming (1. Energy and Environment Department of South-East University, 2. Automation Department of South-East University Nanjing 210096, China) |
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| Abstract: | In this paper, the simulation model program of photovoltaic cells array under changing irradiance was written by S-function in MATLAB software, and a module map of three-phase grid-connected PV system was built. Then, the traditional MPPT algorithms and the improved methods of P＆O and InCond were analyzed. The local and the overall relative error and variance were compared by analyzing the tracking simulation curves of these algorithms. Finally, a practical MPPT algorithm with good characteristics was got. Due to the simulation analysis using the three-phase grid PV power system, the conclusions would be more suitable for practical application as a reference. |
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| Keywords: | battery module model three-phase grid-connected PV systems maximum power point tracking （ MPPT） improved tracking algorithm simulation |
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