EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021

Dr. Shu-Tsung (Anderson) Hsu

Industrial Technology Research Institute (ITRI), Hsinchu, Taiwan

Shu-Tsung (Anderson) Hsu got the PHD degree from Institute of Applied Mechanics in National Taiwan University since 1996. Anderson joined ITRI since 2005 and act as principal researcher and technology manager till now, and have summited 100+ papers and 3 patents in photovoltaic field during 2012 ~ 2021. In the meantime, Anderson co-worked with SEMI PV Task Force and completed five PV international standards including SEMI PV23, PV38, PV56, PV57 and PV69.

Anderson has successfully developed a new test capacity named non-uniform dynamic mechanic loads (NUDML) system in ITRI, which owns eighteen (3x6) independent pneumatic cylinders with maximum loading up to ±12000 Pa (suction load or pressure load). NUDML system can operate the different wind effect by the simulated data named mean surface-pressure pattern (MSPP). All MSPPs can also be evaluated directly by wind-tunnel experiment and CFD simulation. Results of this study revealed that such severity wind-test for PV module strongly relied on the choices of major environmental factors such as wind velocity (V), wind direction angle (β) and inclined angle (α). In addition, the failures of the module and its fixtures are closely related to the external forces such as MSPP (V, α, β).

Anderson is also acting as PVQAT TG7 (wind load) leader since March 2018. In order to fulfil the standardization work, TG7 is developing one draft about non-uniform wind load test for IEC TC82 WG2. This test may be utilized to evaluate if components within the module including solar cells, interconnect ribbons and/or electrical bonds are susceptible to breakage or if fixed parts (such as aluminum extrusion structure, bracket, fixture, screw, etc.) are likely to fail due to the non-uniform mechanical stresses encountered during strong wind load. No fixed parts should be deformed or separation under the test state of stress. In order to meet the requirements for different wind velocity, this standard specifies three types of wind velocity (BS = 13, 15, 17) in terms of their test data named mean surface pressure pattern (MSPP) required for non-uniform wind load testing. In addition, the other environmental conditions like wind directional angle (β = 0°, 180°) and module tilt (α = 10°, 15°, 20°, 25°, 30°, 35°, 40°) are also considered.