基于改进电压扰动法的光伏MPPT  

Photovoltaic MPPT based on improved voltage perturbation method

作　　者：王洪博[1] 肖尧 肖仁军[1] 陈鑫[1] 丁浩天 WANG Hong-bo;XIAO Yao;XIAO Ren-jun;CHEN Xin;DING Hao-tian(Shandong Taishan Pumped-Storage Power Station Co.,Ltd.,Taian Shandong 271000,China;China University of Petroleum,Qingdao Shandong 266580,China;North China Electric Power University,Beijing 102206,China)

机构地区：[1]山东泰山抽水蓄能电站有限责任公司,山东泰安271000 [2]中国石油大学(华东),山东青岛266580 [3]华北电力大学,北京102206

出　　处：《电源技术》2019年第11期1847-1851,共5页Chinese Journal of Power Sources

基　　金：国网新源控股泰山公司抽水蓄能水库结合开发光伏电站初步研究服务(SGXY-2018F03-2-74)

摘　　要：光伏发电系统MPPT控制的根本目的是能够稳、快、准地找到光伏电池的最大功率点,并保持最大功率输出状态。分析了电压扰动法的优劣,得到扰动步长的控制和环境突变时工作点的变化会对误判造成影响。为避免误判,采用自寻优化方法来改进传统的电压扰动法,不仅缩短了响应时间,还降低了振荡,大大提高了能量的转换效率。最后通过仿真实验验证了改进的效果。The fundamental purpose of MPPT control of photovoltaic power system is to find the maximum power point of the PV cell reliably,quickly and accurately,and maintain the maximum power output state.This paper analyzed the advantages and disadvantages of the voltage perturbation method,and studied the influence of the disturbance step control and the change of working point in the environment change on misjudgment.In order to avoid the misjudgment,this paper used the self-seeking optimization method to improve the traditional voltage perturbation method,which not only shortened the response time,but also reduced the oscillation and greatly improved the energy conversion efficiency.Finally,the improved effect was verified by simulation.

关 键 词：光伏电池 改进电压扰动法 最大功率追踪 

分 类 号：TM914[电气工程—电力电子与电力传动]