期刊文献+

基于分布式最大功率跟踪的光伏系统输出特性分析 被引量:27

Output Characteristic Analysis of Distributed Maximum Power Point Tracking PV System
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摘要 分布式最大功率跟踪(DMPPT)光伏系统可以有效地抑制实际环境中因为光照不均影响所造成的产电率下降的问题。以DMPPT的光伏系统为研究对象,针对多个分布式最大功率跟踪模块组网的优化问题,基于系统静态输出特性对多个光伏优化模块级联的结构进行了分析,提出了一种新型的DMPPT光伏系统结构。通过分析和研究,阐明了光照条件、系统结构及单个光伏优化模块本身限压值、限流值等参数与光伏阵列最大输出功率之间的关系。所提出的新型DMPPT光伏系统结构可以保证在不同的光照条件下每块光伏板都可以工作在各自的最大功率点,该结构有效地提高了光伏阵列在失配问题下产电率,并且适用于高电压母线系统。最后搭建了实验平台,通过硬件实验平台验证了所提出的新型DMPPT光伏系统结构对光伏系统产电率的优化效果。 Traditional PV systems always suffer mismatched issues, resulting in disproportionate impacts on energy generation. Distributed maximum power point tracking(DMPPT) PV system, is hereby proposed to solve such problem. To study the smart panel based DMPPT PV system, this paper proposes a new system structure. The relationship among the irradiance case, voltage limit and current limit of the PV optimizer is also analyzed. With the proposed structure, each panels under mismatched cases can work on its independent maximum power point, so a better performances of the PV system can be guaranteed. The new system structure improves the power generation of the PV system in real case effectively, especially in higher voltage bus system. Finally the efficiency of the proposed new DMPPT PV system is verified by experiments.
出处 《电工技术学报》 EI CSCD 北大核心 2015年第24期127-134,共8页 Transactions of China Electrotechnical Society
基金 中国博士后科学基金面上项目(2014M552446) 电力设备电气绝缘国家重点实验室中青年基础研究创新基金(EIPE14313) 国家自然科学基金(51177130)资助项目
关键词 分布式最大功率跟踪 光伏 光照不均 结构优化 Distributed max power point tracking photovoltaic mismatch system optimization
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参考文献14

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二级参考文献15

  • 1吴小进,魏学业,于蓉蓉,韩磊.复杂光照环境下光伏阵列输出特性研究[J].中国电机工程学报,2011,31(S1):162-167. 被引量:56
  • 2吴理博,赵争鸣,刘建政,王健,刘树.单级式光伏并网逆变系统中的最大功率点跟踪算法稳定性研究[J].中国电机工程学报,2006,26(6):73-77. 被引量:161
  • 3张超,何湘宁.短路电流结合扰动观察法在光伏发电最大功率点跟踪控制中的应用[J].中国电机工程学报,2006,26(20):98-102. 被引量:151
  • 4汪海宁,苏建徽,丁明,张国荣.光伏并网功率调节系统[J].中国电机工程学报,2007,27(2):75-79. 被引量:116
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