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Experimental Study of Non-uniform Mechanical Loads and Deformation on Photovoltaic Module
S.T. Hsu, Y.S. Long
Deformation, Non-Uniform, Photovoltaic
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.3.34
935 - 938
ISBN: 3-936338-86-8
Paper DOI: 10.4229/WCPEC-82022-3DV.3.34
0,00 EUR
Document(s): paper, poster


In order to avoid photovoltaic (PV) systems installed in the outside might damage by typhoons, hurricanes and cyclones, consequently, recent years have been increasing interest in developing new mechanical loads technologies that provide guarantees to simulate the real wind effects. However, strong gusts always generated nonuniform wind-loads on PV system, with lot of dynamic forces from vibrate, torque and moment, and deformation. To date, the quality of anti- wind for PV modules typically use the mechanical load tests such as IEC 61215-2:2021 MQT 16 (static mechanic load, SML) and IEC TS 62782:2016 (dynamic mechanic load, DML). However, these documents may not fully fulfil the testing challenges induced by non-uniform wind-loads due to environmental condition like wind velocity (V), wind direction angle (), and module tilt (). In this paper, two kinds of designed cyclic loads (uniform, non-uniform) are used to evaluate the mechanical properties of twelve PV modules (mono, 72 cells, = 25°) with two frames support. This work also considers the specific wind condition (V = 41.4 m/s, 50.9 m/s and 61.2 m/s; = 0° and 180°), and follows two test process which include SML (case A & C) and DML (case B & D). The major self-developed equipment includes a non-uniform dynamic mechanical load (NUDML) system, a deformation measurement system (DMS) and thirty-two units of linear displacement sensor (LDS). The results successfully achieved a quantifiable deformation recording method for PV module under two types of mechanical load process (SML, DML) combining with two kinds of cyclic loads (uniform, non-uniform).