Power acquisition effect for appropriate placement of MPPT units in a PV array

2019 9th International Conference on Future Environment and Energy

生态环境科学;能源学

Takeda, Yusuke^1 ; Itako, Kazutaka^1

Kanagawa Institute of Technology, 243-0292, Japan^1

关键词: Electric power;    IV characteristics;    Maximum power point;    MPPT controls;    Power conditioning systems;    Power increase;    Pv array systems;    Representative patterns;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/257/1/012048/pdf
DOI  :  10.1088/1755-1315/257/1/012048

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The PV generation system operates in maximum power point of PV array by MPPT control of power conditioning system (PCS). However, there is a problem that maximum power of the PV array configuration greatly decreases by partial shadow. For this problem, the authors previously proposed the method which connects MPPT unit to every PV panel between PCS and PV array. Moreover, the effect of this method was demonstrated by simulations and experiments. In the present day, this method is in practical use. However, the appropriate placement of MPPT units was still not clear. The authors previously investigated the appropriate placement of MPPT units from the viewpoint of acquisition of electric power and system stability, simulating P-V and I-V characteristics of some representative patterns connected MPPT unit to each PV panel in the PV array configuration. In this paper, power increase rate of the proposed PV array system is evaluated in experiment, compared to the conventional PV array system. It is clarified that maximum power of the proposed PV array system is 1.26 times, compared with maximum power of the conventional PV array system.