摘要
在Matlab仿真平台下建立光伏电池的非线性工程模型。针对光伏电池的最大功率追踪(maximum power point tracking,MPPT)问题,分析目前典型的最大功率跟踪算法,即变步长扰动观察法和梯度变步长电导增量法;针对其所存在的缺陷,提出基于改进电导增量法的MPPT控制算法。并采用Matlab仿真平台对不同算法的跟踪效果进行对比分析,仿真结果表明:所提出的改进型MPPT算法实用性强,跟踪精度高,而且动态性和稳定性更加优越。
This paper establishes the nonlinear engineering model of photovoltaic cells on the Matlab simulation platform. For the issue of maximum power point tracking（MPPT） of photovoltaic cells, this paper analyzes the current typical maximum power point tracking algorithm, namely variable step size perturbation observation MPPT algorithm and gradient variable step size incremental conductance MPPT algorithm. For their flaws, an improved MPPT control algorithm based on incremental conductance method is proposed. Matlab simulation platform is used to analyze the tracking effect of different MPPT algorithms. Simulation results show that the proposed improved MPPT algorithm is more practical and has high tracking accuracy. In addition, the dynamic and stable performance is superior.
作者
陈力
胡钋
吕国峰
刘沛
陶丹
杨丰阁
CHEN Li HU Po LU Guofeng LIU Pei TAO Dan YANG Fengge(China Electric Power Research Institute, Wuhan 430074, Hubei Province, China School of Electrical Engineering, Wuhan University, Wuhan 430072, Hubei Province, China)
出处
《智能电网》
2017年第2期172-177,共6页
Smart Grid
关键词
光伏电池
电导增量法
变步长
参考电流
改进型MPPT算法
photovoltaic cells
incremental conductance method
variable step
reference current
improved MPPT algorithm
