Development of a real-time hot-spot prevention using an emulator of partially shaded PV systems

被引：34

作者：

Bressan, M. ^{[3
]}

Gutierrez, A. ^{[3
]}

Garcia Gutierrez, L. ^{[3
]}

Alonso, C. ^{[1
,2
]}

机构：

[1] CNRS, LAAS, 7 Ave Colonel Roche, F-31077 Toulouse, France

[2] Univ Toulouse, UPS, INSA, LAAS, F-31400 Toulouse, France

[3] Univ Andes, Dept Elect & Elect Engn, Bogota, Colombia

来源：

RENEWABLE ENERGY | 2018年 / 127卷

关键词：

PV system; Partial shading; Bypass diode; Shading factor; Real-time emulation; Hot-spot prevention; FAULT-DETECTION METHOD; PHOTOVOLTAIC MODULES; CONFIGURATIONS;

D O I：

10.1016/j.renene.2018.04.045

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work presents an emulation in real-time of the shaded PV systems with a hot-spot prevention. The PV model takes into account the photo-induced current contributions from unshaded and shaded sides thanks to parameters such as the shadow transmittance and the percentage area of the shadows. The use of shadow fault detection in real time is employed avoiding all form of hot-spot formation and PV cells power dissipation. The calculation uses a simple derivative equation able to give the area of detection in function of the PV module voltage. The implementation of the emulator in FPGA takes advantages as a result of their features of adaptability and parallel processing suitable for emulation of complex shading visible on PV systems. The emulation of the proposed PV model and the hot-spot prevention are validated through two experimental tests on PV modules. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：334 / 343

页数：10

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