基于变步长电导增量法改进型MPPT的研究  

Research of Improved MPPT Based on Variable Step Incremental Conductance Method

作　　者：王庆磊[1] 徐红城 张强[1] 张海霞[1] 

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《电器与能效管理技术》2017年第21期10-15,47,共7页Electrical & Energy Management Technology

基　　金：安徽理工大学硕博基金项目(2017yb22)

摘　　要：电导增量法(INC)是最大功率点追踪(MPPT)常用的方法之一。步长的选取对光伏发电至关重要,当选取的步长较大时,光伏发电系统能够很快地追踪到最大功率,但系统将会在最大功率点处振荡运行,造成能量损失;当选取的步长较小时,追踪速度较慢,在最大功率点处振荡减小,采用定步长的INC时,存在上述的矛盾。为了解决这个矛盾,即光伏发电系统既能快速地追踪到最大功率,又能在最大功率点处的振荡减小,提出了一种改进型的变步长INC。利用MATLAB/Simulink搭建光伏发电模型并进行仿真,仿真结果验证了该方法能够可靠、快速的运行。Conductance increment method（ INC） is one of the most common methods for maximum power point tracking（ MPPT）. Step selection is critical to photovoltaic,when the step size is large,the photovoltaic power generation system can quickly track the maximum power,but the system will be run on the oscillation at the maximum power point,resulting in energy loss. When the step size is small,the tracking speed is slow,the oscillation is reduced at the maximum power point. Step In Cond,the existence of these contradictions. In order to solve this problem,that is to say,the photovoltaic power generation system can not only track the maximum power quickly,but also reduce the oscillation at the maximum power point,an improved variable step size In Cond was proposed. The photovoltaic power generation model was built and simulated by MATLAB/Simulink. The simulation results show that the method is reliable and fast.

关 键 词：电导增量法 最大功率点追踪 光伏电池 S函数 

分 类 号：TM615[电气工程—电力系统及自动化]