Methods for high-voltage bias testing of PV modules in hot and humid climate

2011 ◽  
Author(s):  
Neelkanth G. Dhere ◽  
Shirish A. Pethe ◽  
Ashwani Kaul
Keyword(s):  
High Voltage ◽  
Humid Climate ◽  
Voltage Bias ◽  
Pv Modules ◽  
Hot And Humid Climate

Outdoor performance testing of thin-film PV modules in the hot and humid climate

2013 ◽  
Author(s):  
Neelkanth G. Dhere ◽  
Ashwani Kaul ◽  
Shirish A. Pethe ◽  
Eric Schneller ◽  
Narendra S. Shiradkar
Keyword(s):  
Thin Film ◽  
Performance Testing ◽  
Humid Climate ◽  
Pv Modules ◽  
Hot And Humid Climate

scholarly journals The Influence of the EVA Film Aging on the Degradation Behavior of PV Modules Under High Voltage Bias in Wet Conditions Followed by Electroluminescence

2019 ◽  
Vol 9 (1) ◽  
pp. 259-265 ◽  
Author(s):  
Kristijan Brecl ◽  
Chiara Barretta ◽  
Gernot Oreski ◽  
Barbara Malic ◽  
Marko Topic
Keyword(s):  
High Voltage ◽  
Degradation Behavior ◽  
Voltage Bias ◽  
Pv Modules

scholarly journals Examination of Photovoltaic Silicon Module Degradation Under High-Voltage Bias and Damp Heat by Electroluminescence

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Kristijan Brecl ◽  
Matevž Bokalič ◽  
Marko Topič
Keyword(s):  
High Voltage ◽  
Degradation Process ◽  
Energy Output ◽  
Degradation Mechanisms ◽  
Pv System ◽  
Performance Loss ◽  
Voltage Bias ◽  
Pv Modules ◽  
In Series ◽  
P Type

The photovoltaic (PV) modules are in PV arrays normally connected in series and thus some of them are exposed to high system voltages since frames of the PV modules are grounded. To predict the long-term PV system energy output and PV module lifetime, it is very important to understand and take into account the degradation process of PV modules under high-voltage stress. Accelerated tests under damp heat (over 1300 h of DH85/60; RH = 85%, T = 60 °C) of in-house developed monocrystalline silicon PV modules with p-type solar cells were preformed while connected to a positive or negative voltage bias of 1000 V. The negative biased modules exhibited just a little degradation, while the positive biased modules degraded rapidly. We identified three degradation mechanisms: cell degradation, silver corrosion, and EVA evaporation. The degradation mechanisms contribute to almost 15% of the performance loss of the 1000 V positive biased modules after more than 1300 h of DH85/60 testing, while the power degradation of the negative biased modules remains below 3%.

Sign in / Sign up

Export Citation Format

Share Document