| 引用本文: | 尤 鋆,郑建勇.基于模糊PI调节Boost电路的光伏系统最大功率点跟踪控制[J].电力自动化设备,2012,32(6): |
| YOU Jun,ZHENG Jianyong.MPPT of photovoltaic system with Boost circuit based on fuzzy PI control[J].Electric Power Automation Equipment,2012,32(6): |
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| 摘要: |
| 详细分析了光伏电池及光伏阵列的工作特性，建立了光伏电池的等效电路及数学模型，根据实际的光伏电池参数计算得出相应数学模型的拟合参数，并根据拟合参数建立了光伏阵列的MATLAB模型。利用Boost电路提升光伏阵列的电压，采用改进的导纳增量法实现光伏阵列的最大功率点跟踪（MPPT）功能，并利用模糊PI控制算法修改控制参数以提高系统的速度。通过对电路的分析，得出了其小信号状态空间模型，利用模型仿真可知电路是一个稳定的系统。实验结果验证了系统工作稳定、可靠、快速。 |
| 关键词: 光伏电池 Boost电路 最大功率点跟踪 模糊控制 |
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| 基金项目:国家高技术研究发展计划（863计划）资助项目（2008 AA052421） |
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| MPPT of photovoltaic system with Boost circuit based on fuzzy PI control |
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YOU Jun1,2, ZHENG Jianyong1,2
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1.Department of Electrical Engineering，Southeast University，Nanjing 210096，China;2.Suzhou Key Laboratory of Electrical Equipment and Automation，Suzhou 215123，China
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| Abstract: |
| The working characteristics of PV（PhotoVoltaic） cell array are analyzed，and its mathematical model and equivalent circuit are established. The fitting parameters of the model are calculated according to the parameters of actual PV cell，based on which a MATLAB model is built. It is studied to adopt Boost converter for stepping up PV output voltage and an enhanced incremental conductance method is implemented for MPPT（Ｍaximum Ｐower Ｐoint Ｔracking）. Fuzzy PI controller is proposed to adjust the control parameters for better dynamic performance. The small-signal state space model of system is deduced by circuit analysis，which is proved a stable system by model simulation. Experimental results show the proposed system is stable，reliable and fast. |
| Key words: photovoltaic cells Boost circuit MPPT fuzzy control |
