| 最大功率点跟踪的太阳能光伏发电系统实验平台设计 |
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| 引用本文： | 刘洋,杜玉晓,蔡梦婷,王永华.最大功率点跟踪的太阳能光伏发电系统实验平台设计[J].实验室研究与探索,2020(3):88-92. |
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| 作者姓名： | 刘洋 杜玉晓 蔡梦婷 王永华 |
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| 作者单位： | 1.广东工业大学自动化学院;2.中国电子科技集团公司第七研究所 |
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| 基金项目： | 国家自然科学基金资助项目(61640213);2018~2020中央财政支持地方高校发展专项(GZ924873)。 |
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| 摘 要： | 设计了太阳能光伏发电铅蓄电池充电的简易实验教学平台,由光伏电池板、充电控制器、阀控式铅蓄电池和变阻箱负载构成。以近似梯度值计算代替一阶求导,提出了一种变步长的电压扰动观察法来实现太阳能光伏发电最大功率点跟踪(MPPT)。以STM8S105单片机为控制器核心,采用Buck直流降压斩波主电路,结合铅蓄电池四阶段充电方式,进行系统硬件和软件设计。测试表明,该实验平台具有MPPT功能,造价较低、结构简单、性能良好、易于操作和维护,能够满足实验教学的要求。
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| 关 键 词： | 光伏发电 铅蓄电池充电 最大功率点跟踪 扰动观察法 |
Design of Photovoltaic Power Generation Experiment Platform Based on MPPT |
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| LIU Yang,DU Yuxiao,CAI Mengting,WANG Yonghua.Design of Photovoltaic Power Generation Experiment Platform Based on MPPT[J].Laboratory Research and Exploration,2020(3):88-92. |
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| Authors: | LIU Yang DU Yuxiao CAI Mengting WANG Yonghua |
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| Institution: | (School of Automation,Guangdong University of Technology,Guangzhou 510006,China;The 7th Research Institute of China Electronics Technology Group Corporation,Guangzhou 510000,China) |
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| Abstract: | An experimental teaching platform for charging lead-acid battery is designed.It is mainly composed of photovoltaic panel,charging controller,valve-regulated lead-acid battery and resistance load.Through the way of approximate gradient calculation,an improvement maximum power point tracking(MPPT)algorithm is proposed based on a voltage variable step perturbation observation method(P&O).Using STM8S105 MCU as the core of the controller,the four-stage charging method is adopted,such as turbulence,constant voltage,and constant current and floating charge,and the DC chopper circuit is used to design the system.The results show that the experiment platform can be used for photovoltaic power generation system MPPT experiment,it has some advantages as follows:reliable operation,good performance,low cost,simple structure,easy maintenance.It can meet the requirements of experimental teaching. |
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| Keywords: | photovoltaic power generation lead-acid battery charging maximum power point tracking(MPPT) perturbation observation method |
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