Presentation Details
| A novel optimized hail testing approach for accurate evaluation of PV module durability Yuanjie Yu1, Zhichao Song1, Philippe Gregoire2, ruirui Lv1, Tao Xu1. 1No.199 Lushan Road, Suzhou New District, Suzhou, China.24273 King St.East, Suite 102, Kitchener, ON, Canada |
Abstract
Abstract — With the increasing frequency of global extreme weather events, the hail resistance performance of photovoltaic (PV) modules faces higher requirements. Existing mainstream testing standards such as IEC 61215 and IEC TS 63397 adopt a binary pass/fail judgment mode, which only focuses on the pass status of modules under specific hail diameters. They fail to effectively evaluate the ultimate hail resistance capacity and overall performance of PV modules, resulting in a significant disconnect from the actual scenarios of natural hail disasters. To address this, this study proposes an optimized evaluation method: First, the module is divided into high-risk areas (edges, corners, and junction box areas) and low-risk areas (central area) to identify the hail resistance vulnerability at different locations accurately; Second, it integrates the actual distribution characteristics of hail sizes in natural hail disasters and the influencing factor of the installation angle of tracker system; Finally, it quantifies the failure rate of modules under different hail conditions through Weibull distribution fitting and introduces an angle weight coefficient for correction. Ultimately, a novel and rational approach for assessing the hail resistance of PV modules, in closer accordance with practical operating scenarios, is proposed and established.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.