Improvement in the Reliability of Bypass Diode at Photovoltaic Modules Through an Intelligent Cooling System

Jaehwan Ko; Chungil Kim; Chung Geun Lee; Deukgwang Lee; Myeong Geun Ko; Suk Whan Ko; Hyung Jun Song

doi:10.5370/KIEE.2021.70.12.1870

Improvement in the Reliability of Bypass Diode at Photovoltaic Modules Through an Intelligent Cooling System

Jaehwan Ko, Chungil Kim, Chung Geun Lee, Deukgwang Lee, Myeong Geun Ko, Suk Whan Ko, Hyung Jun Song

Dept. of Safety Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A Bypass diode maintains the efficiency and stability of photovoltaic systems (PV) under partial shading. However, the bypass diode failure may cause damage and fire in the PV system because the generated current continuously flows through it. Thus, we suggest an intelligent cooling fan system for the bypass diode to ensure the stability of PV. The cooling system consisted of a k-type temperature sensor, electrically controlled fan and auto-control system. If the temperature of bypass diode exceeds specific points owing to partial shading and/or its failure, the cooling system will automatically turn on the fan to prevent bypass diode from abnormal heating. The analysis of indicates that the system effectively decreases it below the melting point of the junction box (177 ℃). The cooling system is adequate for PV under partal shading or with a damaged diode. Consequently, our suggested intelligent cooling system can contribute to the safe operation of PV.

Original language	English
Pages (from-to)	1870-1878
Number of pages	9
Journal	Transactions of the Korean Institute of Electrical Engineers
Volume	70
Issue number	12
DOIs	https://doi.org/10.5370/KIEE.2021.70.12.1870
State	Published - Dec 2021

Keywords

Bypass diode
Intelligent cooling system
Partial shading
Photovoltaic
Reliability

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.5370/KIEE.2021.70.12.1870

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abstract = "A Bypass diode maintains the efficiency and stability of photovoltaic systems (PV) under partial shading. However, the bypass diode failure may cause damage and fire in the PV system because the generated current continuously flows through it. Thus, we suggest an intelligent cooling fan system for the bypass diode to ensure the stability of PV. The cooling system consisted of a k-type temperature sensor, electrically controlled fan and auto-control system. If the temperature of bypass diode exceeds specific points owing to partial shading and/or its failure, the cooling system will automatically turn on the fan to prevent bypass diode from abnormal heating. The analysis of indicates that the system effectively decreases it below the melting point of the junction box (177 ℃). The cooling system is adequate for PV under partal shading or with a damaged diode. Consequently, our suggested intelligent cooling system can contribute to the safe operation of PV.",

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AU - Lee, Deukgwang

AU - Ko, Myeong Geun

AU - Ko, Suk Whan

AU - Song, Hyung Jun

N1 - Publisher Copyright: © The Korean Institute of Electrical Engineers This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2021/12

Y1 - 2021/12

N2 - A Bypass diode maintains the efficiency and stability of photovoltaic systems (PV) under partial shading. However, the bypass diode failure may cause damage and fire in the PV system because the generated current continuously flows through it. Thus, we suggest an intelligent cooling fan system for the bypass diode to ensure the stability of PV. The cooling system consisted of a k-type temperature sensor, electrically controlled fan and auto-control system. If the temperature of bypass diode exceeds specific points owing to partial shading and/or its failure, the cooling system will automatically turn on the fan to prevent bypass diode from abnormal heating. The analysis of indicates that the system effectively decreases it below the melting point of the junction box (177 ℃). The cooling system is adequate for PV under partal shading or with a damaged diode. Consequently, our suggested intelligent cooling system can contribute to the safe operation of PV.

AB - A Bypass diode maintains the efficiency and stability of photovoltaic systems (PV) under partial shading. However, the bypass diode failure may cause damage and fire in the PV system because the generated current continuously flows through it. Thus, we suggest an intelligent cooling fan system for the bypass diode to ensure the stability of PV. The cooling system consisted of a k-type temperature sensor, electrically controlled fan and auto-control system. If the temperature of bypass diode exceeds specific points owing to partial shading and/or its failure, the cooling system will automatically turn on the fan to prevent bypass diode from abnormal heating. The analysis of indicates that the system effectively decreases it below the melting point of the junction box (177 ℃). The cooling system is adequate for PV under partal shading or with a damaged diode. Consequently, our suggested intelligent cooling system can contribute to the safe operation of PV.

KW - Bypass diode

KW - Intelligent cooling system

KW - Partial shading

KW - Photovoltaic

KW - Reliability

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Improvement in the Reliability of Bypass Diode at Photovoltaic Modules Through an Intelligent Cooling System

Abstract

Keywords

UN SDGs

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