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

Cheol-Woong Choi, Kuk-Tai Chang, Gi-Tae Park, Seung-Hoon Lee, Su-Youn Jeong, Yun-Soo Kang, Jae-Sub Ko and Dae-Kyong Kim ()
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Cheol-Woong Choi: Department of Electrical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea
Kuk-Tai Chang: Department of Electrical Engineering, 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

Energies, 2025, vol. 18, issue 13, 1-15

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.

Keywords: power-to-heat (P2H); PV module configuration; adaptive PV configuration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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