Maximum Power Point Tracking Strategy for PV Arrays Under Partial Shading Conditions

doi:10.16628/j.cnki.2095-8188.2020.02.008

DIANQI YU NENGXIAO GUANLI JISHU ›› 2020, Vol. 587 ›› Issue (2): 47-53.doi: 10.16628/j.cnki.2095-8188.2020.02.008

• Ristributed Generation and Grid-Connection Technology • Previous Articles Next Articles

Maximum Power Point Tracking Strategy for PV Arrays Under Partial Shading Conditions

WANG Chuanjie¹, GU Tingkun¹, WU Hao²

1.School of Electrical Engineering, Shandong University, Jinan 250061, China;
2.State Gird Ji’nan Electric Power Company, Jinan 250001, China

Received:2019-11-28 Online:2020-02-15 Published:2020-03-28

Abstract

Abstract: In the case of partial shading,a few local maximum power points appear in the P-U characteristic curve of the photovoltaic array.The traditional maximum power point tracking method can accurately track the maximum power point of the PV array under uniform illumination,but it is easy to fall into the local maximum power point under partial shading.In order to overcome this defect,the P-U and I-U characteristic curves of PV array under partial shading were analyzed.Also,the improved perturb & observe(P&O) was used to track the global maximum power point.And by means of MATLAB/Simulink simulation results,this method can track the global maximum power point accurately.

Key words: PV array, partially shading, characteristic curve, improved perturb &, observe, output characteristics

WANG Chuanjie, GU Tingkun, WU Hao. Maximum Power Point Tracking Strategy for PV Arrays Under Partial Shading Conditions[J]. DIANQI YU NENGXIAO GUANLI JISHU, 2020, 587(2): 47-53.

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Maximum Power Point Tracking Strategy for PV Arrays Under Partial Shading Conditions

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