基于Hermite插值多项式的光伏MPPT改进算法的研究  

Research on improved photovoltaic MPPT algorithm based on Hermite interpolation polynomial

作　　者：罗驰 任一峰 安坤 李涛 张泽慧 LUO Chi;REN Yifeng;AN Kun;LI Tao;ZHANG Zehui(School of Electrical and Control Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学电气与控制工程学院,山西太原030051

出　　处：《现代电子技术》2021年第5期137-142,共6页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(61774138);山西省科技成果转化引导专项项目(201804D131038);山西省重点研发计划项目(201903D032)。

摘　　要：为了提高光伏阵列的最大功率点跟踪(MPPT)精度,减少在最大功率点处的电压振荡而带来的能量损失,提出了一种将Hermite插值法和定步长扰动观测法相结合的改进型MPPT控制算法。通过Matlab/Simulink平台搭建了基于改进型MPPT控制算法的Boost变换电路仿真模型,仿真结果表明,改进的MPPT控制算法能够平稳的快速追踪到最大功率点,有效地解决了光伏阵列在最大功率点处由于电压振荡而带来的能量损失。In order to improve the maximum power point tracking(MPPT)accuracy of the photovoltaic(PV)array and reduce its energy loss caused by the voltage oscillation at the maximum power point(MPP),an improved MPPT control algorithm combining Hermite interpolation method and perturbation and observation method with constant step size is proposed.The Boost circuit simulation model based on the improved MPPT control algorithm is built by Matlab/Simulink platform.The simulation results show that the improved MPPT control algorithm can track the MPP smoothly and quickly,and effectively solve the energy loss of the PV array due to voltage oscillation at the MPP.

关 键 词：光伏阵列 最大功率点跟踪 Hermite插值法 扰动观测法 电压振荡 Matlab/Simulink平台 Boost变换电路 仿真结果 

分 类 号：TN29-34[电子电信—物理电子学] TM464[电气工程—电器]