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Performance Comparison of PV Module Configurations in a Fixed-Load P2H System Considering Regional and Seasonal Solar Irradiance in Korea

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  • Cheol-Woong Choi

    (Department of Electrical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea
    Smartenergy Institute, Sunchon National University, Suncheon 57922, Republic of Korea)

  • Kuk-Tai Chang

    (Department of Electrical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea
    Smartenergy Institute, Sunchon National University, Suncheon 57922, Republic of Korea)

  • Gi-Tae Park

    (Research Institute, SEL SYSTEM Co., Ltd., Gwangyang 57714, Republic of Korea)

  • Seung-Hoon Lee

    (Research Institute, SEL SYSTEM Co., Ltd., Gwangyang 57714, Republic of Korea)

  • Su-Youn Jeong

    (Smartenergy Institute, Sunchon National University, Suncheon 57922, Republic of Korea)

  • Yun-Soo Kang

    (Department of Mathematics Education, Sunchon National University, Suncheon 57922, Republic of Korea)

  • Jae-Sub Ko

    (Department of Electrical Engineering, Gangneung-Wonju National University, Wonju 26403, Republic of Korea)

  • Dae-Kyong Kim

    (Department of Electrical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea
    Smartenergy Institute, Sunchon National University, Suncheon 57922, Republic of Korea)

Abstract

This study investigates the impact of photovoltaic (PV) module configurations on the output performance of power-to-heat (P2H) systems under fixed-load conditions, considering regional solar irradiance characteristics in South Korea. Through both simulations and experimental analyses using a P2H testbed, two configurations, namely 6S (6Series) and 3S2P (3Series-2Parallel), were compared under varying irradiance levels. Based on an irradiance threshold of 533.2 W/m 2 , an adaptive PV configuration method is proposed to optimize energy output. The performance of the resistive-heating-based P2H system was evaluated using solar radiation data from major regions of Korea. Experimental results demonstrated that this approach can increase output power by up to 65% at low irradiance and improve annual energy yield by about 16% compared with a fixed configuration. This study offers practical guidance for designing P2H systems tailored to the climatic conditions in Korea.

Suggested Citation

  • Cheol-Woong Choi & Kuk-Tai Chang & Gi-Tae Park & Seung-Hoon Lee & Su-Youn Jeong & Yun-Soo Kang & Jae-Sub Ko & Dae-Kyong Kim, 2025. "Performance Comparison of PV Module Configurations in a Fixed-Load P2H System Considering Regional and Seasonal Solar Irradiance in Korea," Energies, MDPI, vol. 18(13), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:13:p:3446-:d:1691678
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