A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications
In response to fire safety risks associated with photovoltaic (PV) systems and evolving rapid shutdown requirements, this paper proposes a cost-effective and reliable rapid shutdown solution integrated directly into the PV module junction box. The system employs analog circuitry triggered by an exte...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/11/2983 |
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| author | Joon-Young Jeon Minkook Kim Myungwoo Son Ju-Hee Kim Young-Dal Lee Yong-Hyun Kim |
| author_facet | Joon-Young Jeon Minkook Kim Myungwoo Son Ju-Hee Kim Young-Dal Lee Yong-Hyun Kim |
| author_sort | Joon-Young Jeon |
| collection | DOAJ |
| description | In response to fire safety risks associated with photovoltaic (PV) systems and evolving rapid shutdown requirements, this paper proposes a cost-effective and reliable rapid shutdown solution integrated directly into the PV module junction box. The system employs analog circuitry triggered by an external pulse-width modulation (PWM) signal, with optocoupler isolation and a controlled short-circuit method to rapidly reduce the module output voltage. Simulation and experimental results confirm that the output voltage is reduced to approximately 2 V within 280 ms, satisfying the U.S. National Electrical Code (NEC) 690.12 requirements. This junction-box–integrated approach eliminates the complexity of conventional module-level power electronics (MLPE) systems and offers a highly practical alternative for building-integrated photovoltaic (BIPV) applications where partial shading is minimal. |
| format | Article |
| id | doaj-art-4817e08fb2dc4a40bb85e8cc14cd4512 |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-4817e08fb2dc4a40bb85e8cc14cd45122025-08-20T02:23:04ZengMDPI AGEnergies1996-10732025-06-011811298310.3390/en18112983A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV ApplicationsJoon-Young Jeon0Minkook Kim1Myungwoo Son2Ju-Hee Kim3Young-Dal Lee4Yong-Hyun Kim5Artificial Intelligence Energy Research Center, Korea Photonics Technology Institute, 9, Cheomdanventure-ro 108beon-gil, Buk-gu, Gwangju 61007, Republic of KoreaArtificial Intelligence Energy Research Center, Korea Photonics Technology Institute, 9, Cheomdanventure-ro 108beon-gil, Buk-gu, Gwangju 61007, Republic of KoreaArtificial Intelligence Energy Research Center, Korea Photonics Technology Institute, 9, Cheomdanventure-ro 108beon-gil, Buk-gu, Gwangju 61007, Republic of KoreaArtificial Intelligence Energy Research Center, Korea Photonics Technology Institute, 9, Cheomdanventure-ro 108beon-gil, Buk-gu, Gwangju 61007, Republic of KoreaDepartment of Future Mobility, College of AI, Chonnam National University 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of KoreaArtificial Intelligence Energy Research Center, Korea Photonics Technology Institute, 9, Cheomdanventure-ro 108beon-gil, Buk-gu, Gwangju 61007, Republic of KoreaIn response to fire safety risks associated with photovoltaic (PV) systems and evolving rapid shutdown requirements, this paper proposes a cost-effective and reliable rapid shutdown solution integrated directly into the PV module junction box. The system employs analog circuitry triggered by an external pulse-width modulation (PWM) signal, with optocoupler isolation and a controlled short-circuit method to rapidly reduce the module output voltage. Simulation and experimental results confirm that the output voltage is reduced to approximately 2 V within 280 ms, satisfying the U.S. National Electrical Code (NEC) 690.12 requirements. This junction-box–integrated approach eliminates the complexity of conventional module-level power electronics (MLPE) systems and offers a highly practical alternative for building-integrated photovoltaic (BIPV) applications where partial shading is minimal.https://www.mdpi.com/1996-1073/18/11/2983photovoltaicBIPVrapid shutdownjunction boxNEC 690.12 |
| spellingShingle | Joon-Young Jeon Minkook Kim Myungwoo Son Ju-Hee Kim Young-Dal Lee Yong-Hyun Kim A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications Energies photovoltaic BIPV rapid shutdown junction box NEC 690.12 |
| title | A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications |
| title_full | A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications |
| title_fullStr | A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications |
| title_full_unstemmed | A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications |
| title_short | A Cost-Effective and Reliable Junction-Box–Integrated Rapid Shutdown System for BIPV Applications |
| title_sort | cost effective and reliable junction box integrated rapid shutdown system for bipv applications |
| topic | photovoltaic BIPV rapid shutdown junction box NEC 690.12 |
| url | https://www.mdpi.com/1996-1073/18/11/2983 |
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