光伏发电用推挽正激升压电源的研究  

Research on Push-Pull Forward Converter for Photovoltaic Systems

作　　者：何占宁[1] 夏东伟[1] 刘玉朋[1] 

机构地区：[1]青岛大学自动化工程学院,山东青岛266071

出　　处：《通信电源技术》2012年第1期5-7,11,共4页Telecom Power Technology

摘　　要：针对光伏发电升压电源中存在的输入输出不隔离及体积大效率低的缺点,研制了一款具有MPPT功能的新型推挽正激升压电源。以推挽正激变换器作为升压电源的核心,设计了升压电源主电路、控制电路、反馈电路。在最大功率点跟踪中提出了扰动因子,利用改进的变步长扰动观察法对传统的MPPT算法进行优化。实验结果显示了变换器良好的特性,推挽正激升压电源达到了结构简单稳定性高的设计要求并能准确迅速跟踪外部环境的变化。Considering for the disadvantages of not isolation,bulky and low efficiency of the input and output of the traditional converter,a push-pull forward converter with MPPT is developed.The push-pull forward converter is used as the core of the power supply;the main circuit,control circuit and feedback circuit are designed.In the algorithm of MPPT,perturbation factor is proposed to optimize the traditional MPPT algorithm by improved perturbation and observation method.The experimental results show good characteristics of the converter.The push-pull forward converter reaches the design requirements of simple structure and high stability,and can tracking the changes of the external environment fast and exactly.

关 键 词：推挽正激 最大功率点跟踪 光伏发电 

分 类 号：TM615[电气工程—电力系统及自动化] TN86[电子电信—信息与通信工程]