一种环境变化下的高效率光伏组件最大功率点跟踪方法
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摘要
为实现在环境变化下光伏组件高功率发电的目的,提出一种环境变化下的高效率光伏组件最大功率点跟踪方法。基于Lambert W函数实现光伏组件最大功率点提取,利用光强电压阈值设定法达到环境变化的自动识别,实现环境变化下光伏组件最大功率点跟踪目的。仿真及实验表明,该方法可在环境变化中有效跟踪光伏组件最大功率点,与扰动观察相比,发电效率提高了8.2%。
In order to obtained high efficiency of photovoltaic system under varying environment,a new maximum power point tracking method is proposed. By using Lambert W function,an algorithm to extract the maximum power point of photovoltaic module is given. Moreover,to achieve the maximum power point of the photovoltaic module under varying environment,a method to identify the changes of environment based on the irradiance-voltage threshold setting is demonstrated. Compared with perturb and observe method,the results of simulation and experiment showed that the proposed method can track the maximum power point of photovoltaic module under varying environment. In addition,it is found that the energy conversion efficiency of the proposed algorithm has increased by approximately 8.2%.
In order to obtained high efficiency of photovoltaic system under varying environment,a new maximum power point tracking method is proposed. By using Lambert W function,an algorithm to extract the maximum power point of photovoltaic module is given. Moreover,to achieve the maximum power point of the photovoltaic module under varying environment,a method to identify the changes of environment based on the irradiance-voltage threshold setting is demonstrated. Compared with perturb and observe method,the results of simulation and experiment showed that the proposed method can track the maximum power point of photovoltaic module under varying environment. In addition,it is found that the energy conversion efficiency of the proposed algorithm has increased by approximately 8.2%.
引文
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[3]赵懿琨,吴宝仔,方壮东,等.光伏蓄电式无线充电蓝牙遥控机器人设计[J].探索与观察,2017,20(2):65-67.[3]Zhao Yikun,Wu Baozai,Fang Zhuangdong,et al.Design of wireless charging bluetooth remote control robot based on solar energy supply[J].Electoonics World,2017,20(2):65-67.
[4]Muhammad Burhan,Oh Seung Jin,Chua Kian Jon Erest,et al.Solar to hydrogen:Compact and cost effective CPV field for rooftop operation and hydrogen production[J].Applied Energy,2017,194:255-266.
[5]Sher H A,Murtaza A F,Noman A,et al.A new sensorless hybrid MPPT algorithm based on fractional short-cicuit current measure.ment and P&O MPPT[J].IEEE Transactions on Sustainable Energy,2015,6(4):1426-1434.
[6]Li Qiyu,Zhao Shengdun,Wang Mengqi,et al.An improved perturbation and observation maximum power point tracking algorithm based on PV module fourparameter model for higher efficiency[J].Applied Energy,2017,195:523-537.
[7]Belkaid A,Colak I,Isik O.Photovoltaic maximum power point tracking under fast varying of solar radiation[J].Applied Energy,2016,179:523-530.
[8]Rizzo S A,Scelba G.ANN based MPPT method for rapidly variable shading conditions[J].Applied Energy,2015,145:124-132.
[9]Suganthi L,Iniyan S,Samuel A A.Applications of fuzzy logic in renewable energy systems-A review[J].Renewable and Sustainable Energy Reviews,2015,48:585-607.
[10]Chao Kuei-Hsiang,Lin Yu-Sheng,Lai Uei-Dar.Improved particle swarm optimization for maximum power point tracking in photovoltaic module arrays[J].Applied Energy,2015,158:609-618.
[11]彭乐乐,孙以泽,林学龙,等.工程用太阳电池模型及参数确定法[J].太阳能学报,2012,33(2):283-286.[11]Peng Lele,Sun Yize,Lin Xuelong,et al.Engineering model and parameters determination method of photovoltaic cell and array[J].Acta Energiae Solaris Sinica,2012,33(2):283-286.
[12]丁金磊.太阳电池I-V方程显式求解原理研究及应用[D].合肥:中国科学技术大学,2007.[12]Ding Jinlei.Principle study and technique application of explicit solution for solar cell I-V equation[D].Hefei:University of Science and Technology of China,2007.
[13]孙以泽,彭乐乐,孟婥,等.基于Lambert W函数的光伏组件参数提取及优化[J].太阳能学报,2014,35(8):1429-1434.[13]Sun Yize,Peng Lele,Meng Zhuo,et al.Parameters extraction and optimization for PV module based on Lambert W function[J].Acta Energiae Solaris Sinica,2014,35(8):1429-1434.
[14]Jubaer A,Zainal S.An improved perturb and observe(P&O)maximum power point tracking(MPPT)algorithm for higher efficiency[J].Applied Energy,2015,150:97-108.
[15]Rizzo S A,Scelba G.ANN based MPPT method for rapidly variable shading conditions[J].Applied Energy,2015,145:124-132.