摘要
针对光伏发电系统最大功率点跟踪(MPPT)恒定电压控制法(CVT)的缺点,提出了一种新的基于温度系数在线修正的改进CVT法,与传统的CVT控制相比,它能更快速准确地跟踪最大功率点(MPP)。为进一步提高跟踪控制的精度和效率,结合电导增量法(IncCond)实现对光伏电池最大功率点跟踪(MPPT)的复合控制,即在系统偏离MPP误差较大时采用CVT控制,快速调整光伏组件的工作点,再采用IncCond进行MPPT控制。最后通过实验验证了该MPP快速追踪控制策略的正确性和优越性。
Aiming at the shortcomings of constant voltage tracking control method(CVT)of photovoltaic power genera-tion system maximum power point tracking(MPPT),a novel improved online correction CVT based on temperature coef-ficient is proposed,which can more quickly and accurately tracking the MPP compared to the traditional CVT control.On the basis of this improved CVT method,with incremental conductance(IncCond)method compound control is pro-posed to further enhance the accuracy and efficiency of the tracking control.When the MPP’s error is large,use CVT rapidly adjust the working point of PV modules,then use IncCond precise control.The experiments validate the cor-rectness and superiority of this MPP fast tracking control strategy.
出处
《电力电子技术》
CSCD
北大核心
2010年第10期14-16,共3页
Power Electronics
基金
苏州市职业大学创新团队科技攻关项目(200802)~~
关键词
光伏发电
最大功率点跟踪
复合控制
photovoltaic generation
maximum power point tracking
compound control