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The traditional MPPT of PV system usually needs two variables,the input voltage and current of PV system.But this method has several shortcomings:firstly,it has complex system structure.Secondly,it's hard to realize in the project.Thirdly,it can't reflect the maximum power of the load directly.Therefore,this paper proposes a single input MPPT method based on load current of PV system.The method chooses the Boost circuit as the research object and adopts the simple but effective duty cycle perturbation and observation method.Afterwards,it uses Matlab software to construct simulation model of MPPT algorithm with one or two inputs.Finally,the simulation is completed.The results indicate that the new method not only can simplify the control structure of system,but also make controller more integrated.At the same time,it saves the cost.Overall,it has certain practical value.
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Basic Information:
DOI：10.20040/j.cnki.1000-7709.2016.03.057
China Classification Code:TM615
Citation Information:
[1]LI Zhi-jun,ZHANG Xuan-tao,LIU Shuang ,et al.Simulation Experiment on MPPT Method of Photovoltaic System Based on Load Current[J].Water Resources and Power,2016,34(03):211-214+93.DOI:10.20040/j.cnki.1000-7709.2016.03.057.
Fund Information:
河北省科技支撑计划项目(15212105D)
2016-03-25
2016-03-25