光伏模块并网的新型非线性控制方法  

Using Non-linear Method to Control Grid-connected Photovoltaic Modules

作　　者：李灵利 倪大伟 朱忠明 王月生 胡雷剑 陈敏跃 张灏 卫晓文 LI Ling-li NI Da-wei ZHU Zhong-ming WANG Yue-sheng HU Lei-jian CHEN Min-yue ZHANG Hao WEI Xiao-wen(State Grid Pinghu Zhejiang Power Supply Company, Jiaxing 314200, China)

机构地区：[1]国网浙江平湖市供电公司,浙江嘉兴314200

出　　处：《电气开关》2017年第4期67-71,75,共6页Electric Switchgear

摘　　要：对于单相两级式光伏并网系统,传统的控制方法是采用直流侧电压外环、网侧电流内环的双环控制策略。但该方法在光伏电池输入功率骤变时,存在响应滞后、系统稳定性较差的缺点。针对这些缺陷,本文提出了一种新的非线性控制方法,该方法基于光伏电池、变压器和逆变器的非线性特性而提出的后推法。其可以克服传统控制方法的这一缺点,且硬件简单,算法更简洁、易于实现。通过matlab仿真平台对其进行实验验证,证实其可以达到了预期的效果,具有很好的实用性。For single-phase two-stage photovoltaic grid-connected system, the traditional control method is the use of DC voltage outer ring, mesh side current inner loop of double-loop control strategy. However, the control methods exist the re- sponse lag,poor stability of the system when the input power photovoltaic ceils occurs a sudden change. For this defect, we propose a new nonlinear control method, which is based on the nonlinear characteristics of photovoltaic systems, trans- formers and inverters after the proposed extrapolation. It was named the backstepping design method （a nonlinear control method）. The characteristics of the method closer to the system can overcome the above-described disadvantages of the conventional control method. Through the MATLAB simulation platform validate its feasibility, to achieve the desired effect.

关 键 词：光伏模块 MPPT 光伏并网 非线性控制 后推法 

分 类 号：TM56[电气工程—电器]