Effects of Photovoltaic Module Soiling on Glass Surface Resistance and Potential-Induced Degradation

被引：0
作者：
Hacke, Peter [1 ]
Burton, Patrick [2 ]
Hendrickson, Alex [2 ]
Spataru, Sergiu [3 ]
Glick, Stephen [1 ]
Terwilliger, Kent [1 ]
机构：
[1] Natl Renewable Energy Lab, Golden, CO USA
[2] Sandia Natl Labs, Albuquerque, NM USA
[3] Aalborg Univ, Aalborg, Denmark
来源：
2015 IEEE 42ND PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC) | 2015年
关键词：
dust; photovoltaic modules; potential-induced degradation; sea salt; soiling; soot; surface resistance;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The sheet resistance of three soil types (Arizona road dust, soot, and sea salt) on glass were measured by the transmission line method as a function of relative humidity (RH) between 39% and 95% at 60 degrees C. Sea salt yielded a 3.5 orders of magnitude decrease in resistance on the glass surface when the RH was increased over this RH range. Arizona road dust showed reduced sheet resistance at lower RH, but with less humidity sensitivity over the range tested. The soot sample did not show significant resistivity change compared to the unsoiled control. Photovoltaic modules with sea salt on their faces were step-stressed between 25% and 95% RH at 60 degrees C applying -1000 V bias to the active cell circuit. Leakage current from the cell circuit to ground ranged between two and ten times higher than that of the unsoiled controls. Degradation rate of modules with salt on the surface increased with increasing RH and time.
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页数：4
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