Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Detection of Aging Modules in Solar String with Jerk Function
Authors Han-Byeol Son ; Seong-Mi Park ; Sung-Jun Park
DOI 10.6113/TKPE/2019.24.5.356
Page pp.356-364
ISSN 1229-2214
Keywords Solar aging; Jerk function; PV measurement system; Aging measurement technique
Abstract In this study, major problems, such as licensing problems due to civil complaints, deterioration of facility period, and damage of modules, are exposed to many problems in domestic businesses. Particularly, the photovoltaic (PV) modules applied to early PV systems have been repaired and replaced over the past two decades, and a new module-based aging detection method is needed to expand the maintenance market and stabilize and repair power supplies. PV modules in a PV system use a string that is configured in series to generate high voltage. However, even if only one module of the solar modules connected in series ages, the power generation efficiency of the aged string is reduced. Therefore, we propose a topology that can measure the instantaneous PV characteristic curve to determine the aging module in the solar string and the aging judgment algorithm using the measured PV characteristic curve.