自适应变步长MPPT算法  

Adaptive Variable Step Size MPPT Algorithm

作　　者：黄舒予[1] 牟龙华[1] 石林[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《电力系统及其自动化学报》2011年第5期26-30,共5页Proceedings of the CSU-EPSA

基　　金：国家火炬计划项目(2008GH040894);上海市教育委员会科研创新项目(11CXY12)

摘　　要：为减小光伏电池因环境变化造成的功率损失,提高系统的光电转换效率及跟踪响应速度,在传统电导增量法的基础上结合自适应变步长最小均方差LMS(least mean squre)算法,提出了一种自适应变步长最大功率跟踪算法,并在Matlab环境下利用SimPowerSystem功能模块建立了光伏电池的数学模型及自适应变步长算法的控制器模型。仿真结果表明,该算法在光照、温度等系统参数扰动的情况下都能快速找到新的工作点,表现出良好的动态及稳态特性,证实了算法的正确性和有效性。In order to reduce the power loss caused by changeable environment, and to increase the photoelectric conversion efficiency as well as tracking speed, a novel adaptive MPPT algorithm based on traditional increment conductance method and adaptive variable step size LMS algorithm was proposed. By SimPowerSystern block of Matlab, the simulation model of photovoltaic cell and adaptive variable step size MPPT algorithm controller was built in the paper. Even under the perturbations of illumination and temperature, simulation results show that the proposed algorithm can quickly find a new operating point and has a good dynamic and steady-state performance, which confirms the validity of the novel algorithm.

关 键 词：光伏发电 最大功率点跟踪 自适应变步长 电导增量法 

分 类 号：TM615[电气工程—电力系统及自动化]