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郑明才,赵小超,胡恩博,郑金兵.Boost结构太阳能收集电路的MPPT控制方法研究[J].电源学报,2017,15(6):36-42
Boost结构太阳能收集电路的MPPT控制方法研究
Research on MPPT Control Method for Solar Energy Collecting Circuit Based on Boost Structure
投稿时间:2016-05-08  修订日期:2017-01-20
DOI:10.13234/j.issn.2095-2805.2017.6.36
中文关键词:  太阳能收集  Boost电路  MPPT控制  最优占空比
英文关键词:solar energy collecting  Boost circuit  MPPT control  optimal duty cycle
基金项目:湖南省自然科学基金资助项目(2015JJ2037);湖南省重点实验室资助项目(2015TP1017)
作者单位E-mail
郑明才 湖南第一师范学院信息科学与工程学院, 长沙 410205 dysfzmc@163.com 
赵小超 湖南第一师范学院信息科学与工程学院, 长沙 410205;湖南大学数学与计量经济学院, 长沙 410082  
胡恩博 湖南第一师范学院信息科学与工程学院, 长沙 410205  
郑金兵 中国电子科技集团第48 研究所, 长沙 410111  
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中文摘要:
      针对太阳能收集电路的收集效率和可实现性问题,提出一种Boost结构太阳能收集电路的MPPT控制方法。利用Boost电路PWM工作时的升压作用将光伏电池生成的电能强制性储存于大容量电容中,为光伏电池生成电能的最大化收集提供实现可能。通过实时检测光伏电池等效状态和收集电路等效负载确定Boost电路的MPPT控制脉冲最优占空比,迫使收集电路实时工作在光伏电池的MPPT工作点附近,尽可能达到提高太阳能电收集效率的目的。通过分析收集电路工作过程,给出了光伏电池等效状态和收集电路等效负载的实时检测方法以及MPPT控制脉冲最优占空比的确定方法。理论分析和实验结果表明,该控制方法下的Boost结构太阳能收集电路的收集效率高、实现容易。
英文摘要:
      Aiming at the collection efficiency and realizability of solar energy collecting circuit, a method of ma-ximum power point tracking(MPPT) control for solar energy collecting circuit based on Boost structure is presented. The electric energy of photovoltaic cells is mandatory stored in large capacity capacitors by the Boost convertor in PWM working mode, which provides the possibility of maximum power collection. According to the real-time detection values of photovoltaic cells' equivalent state and collecting circuit's equivalent load, the optimal control pulse duty cycle for Boost convertor is determined to force the collecting circuit to work near the MPPT operating point of the photovoltaic cells in real time and to achieve the purpose of improving the collection efficiency of solar energy collecting circuit as far as possible. The working process of the collecting circuit is analyzed, the real-time detection methods of photovoltaic cells' equivalent state and collecting circuit's equivalent load are given, and a computing method to determine the optimal control pulse duty cycle for the MPPT control solar energy collecting circuit is presented. The theoretical analysis and experiment results validate that the solar energy collecting circuit has the advantages of high collection efficiency and easy implementation.
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