| 引用本文: | 王立国,颜洪正,刘宝柱.光伏组件5参数模型的等值修正求取算法[J].电力系统保护与控制,2013,41(23):67-72.[点击复制] |
| WANG Li-guo,YAN Hong-zheng,LIU Bao-zhu.Equivalent correction algorithm of photovoltaic module 5-parameter model[J].Power System Protection and Control,2013,41(23):67-72[点击复制] |
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| 摘要: |
| 利用光伏电池生产厂家提供的标准测试条件下开路点、短路点和最大功率点的实测数据，形成含光生电流、二极管理想因子、等效串联电阻、等效并联电阻的非线性方程组，用牛顿-拉夫逊法进行求解。针对求解时二极管理想因子初值的选取不当导致其他模型参数的计算结果出现参数漂移问题，提出一种等值修正计算方法，通过消去二极管理想因子后建立了等值方程式，给出了相应的迭代参量修正策略。理论分析表明，该方法不再由人根据经验选定二极管理想因子值，求解过程中没有忽略等效的并联电阻和串联电阻，迭代修正策略保证了通过少量迭代即可得到精确的模型参数。结合MSX60光伏组件实际实验数据的算例分析验证了所提算法的准确性。 |
| 关键词: 光伏组件 5参数模型 参数计算 牛顿-拉夫逊法 二极管理想因子 |
| DOI：10.7667/j.issn.1674-3415.2013.23.011 |
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| 基金项目:国家高技术研究发展计划“863”课题(2011AA05A301) |
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| Equivalent correction algorithm of photovoltaic module 5-parameter model |
| WANG Li-guo,YAN Hong-zheng,LIU Bao-zhu |
| () |
| Abstract: |
| Actual experimental data under standard test conditions at open circuit point, short circuit point and maximum power point are provided by photovoltaic module manufacturer. Based on these data, nonlinearity equations with light current, diode ideality factor, equivalent series and shunt resistances are built and solved with Newton-Raphson algorithm. Aiming at the parametric drifting problem of the other four parameters’ calculating results, when the initial value of diode ideality factor is selected improperly, an equivalent correction algorithm is proposed. Eliminating the diode ideality factor, an equivalent equation is built. Besides, an iterative parametric correction strategy is put forward as well. Theoretical analysis shows, with the method proposed in this paper, the diode ideality factor value is no longer estimated according to someone’s experience, and the equivalent series and shunt resistances are no longer neglected. What’s more, the iterative parametric correction strategy ensures accurate model parameters can be obtained through a small amount of iteration. The accuracy of the algorithm is validated based on the actual experimental data analysis of MSX60 photovoltaic module. |
| Key words: photovoltaic module 5-parameter model parameter determining Newton-Raphson algorithm diode ideality factor |
