Title:	Corrosion Testing of FPV Materials in Off-shore
Author(s):	M. Gang, D.C. Kim, S.D. Kim, H.J. Kim, H. Jo, S. Shin, C.S. Won
Keywords:	Floating PV, Off-shore, Corrosion test
Topic:	Photovoltaic Modules and BoS Components
Subtopic:	Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods
Event:	8th World Conference on Photovoltaic Energy Conversion
Session:	3DV.3.23
Pages:	921 - 923
ISBN:	3-936338-86-8
Paper DOI:	10.4229/WCPEC-82022-3DV.3.23
Price:	0,00 EUR
Document(s):	paper, poster

Abstract/Summary:

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In the present work, we demonstrate the case study and outcomes of the corrosion effect based on the Marine Research Floating photovoltaic (FPV) test-bed installed in 2021 on Saemangeum (seawater lake) in South Korea. We developed the floating PV system in collaboration with K-Water (water resource manager) to install marine solar power facilities. However, the corrosion control and preservation of floating PV structures are important factors in increasing durability in these regions. Accordingly, the possibility of installation in the corrosive environment was studied through corrosion exposure tests of floating PV structure materials. To study this, the corrosion grades of floating PV structure materials (metals) in marine environments were classified based on ISO 9223 standard. At the same time, the corrosion rate of standard specimens for the corrosive evaluation was determined based on ISO 9226 standard. After the test specimen was installed, the corrosion rate study was conducted every 3 months. The atmospheric corrosion of PosMAC [Ternary alloy coated steel (Zn-3%, Mg-2.5%, Al)], stainless steel, and aluminum was evaluated in Saemangeum (seawater lake) for 1 year. The specimen holder unit was composed of a material that did not affect the corrosion of the specimen. In addition, it was designed to minimize the occlusion of the specimen. The fabricated specimen holder unit was installed on a test-bed located in the sea. After the exposure test had been completed, the corrosion layers were removed by the chemical cleaning procedure according to metal type. Finally, the corrosion rate was evaluated by measuring the weight loss.