光伏电池数学模型分析及MPPT控制仿真  

Analysis on mathematic model of photovoltaic panels and MPPT control simulation

作　　者：郭长亮[1] 张素霜 李铭[1] 杜海超[1] 

机构地区：[1]东北电力大学,吉林吉林132012 [2]国网温州供电公司,浙江温州325000

出　　处：《电源技术》2014年第9期1640-1643,共4页Chinese Journal of Power Sources

基　　金：吉林省科技发展计划项目(20130206082SF);东北电力大学研究生创新基金(2013)

摘　　要：提出新型光伏电池数学模型,与其他传统数学模型相比,能准确反映实际光伏电池的输出特性,更好地描述光伏电池的电气特性,对光伏发电系统的理论深入研究提供参考价值。为了实现最大功率点跟踪,在常用的变步长电导增量法基础之上,提出了改进的控制策略。该方法控制精度高、能消除追踪过程中的振荡现象,并且提高了响应速度。基于PSCAD中搭建仿真模型,依照光伏电池厂家提供技术参数模拟光伏电池的输出特性,并验证数学模型和MPPT模拟器的有效性。分析仿真结果表明,选用的光伏电池数学模型和改进变步长电导增量法能够符合工程应用场合。A new photovoltaic cell mathematical model was proposed. Compared with other traditional model, it could more accurately reflect the actual output characteristics of photovoltaic cells and better describe the electrical characteristics of photovoltaic cells, and also provide the reference value for studying of theories of PV generation systems. In order to realize MPPT, based on the variable step length increment conductance method, the improved control strategy was proposed, which eliminated the oscillation phenomenon in the process of tracking and improved the accuracy and response speed. Based on PSCAD simulation models for PV array and MPPT control, the output characteristics of PV cells using the technical parameters provided by photovoltaic battery manufacturers, and the validity of mathematical model and MTTP simulator was validated. The simulation results show that the mathematical model of PV cells and improving the variable step length increment conductance method can conform to engineering applications.

关 键 词：光伏电池 新型数学模型 改进变步长 电导增量法 PSCAD 

分 类 号：TM914[电气工程—电力电子与电力传动]