Potential Induced Degradation Of Solar Cells And Panels

This potential degradation mechanism is not monitored by the typical pv tests listed in iec 61215 2.

Potential induced degradation of solar cells and panels.

These small cracks cause electrical connections to deteriorate meaning there are fewer paths for those electrons from the sun to take and thus less energy goes to your inverter and into your home business or farm. The factors that can cause pid include voltage heat and humidity and most solar modules are exposed to the combination of these factors during their working life. Nevertheless the pid effect does not occur on all or even a majority of solar modules. Potential induced degradation pid is a potential induced performance degradation in crystalline photovoltaic modules caused by so called stray currents.

Potential induced degradation as the name implies can occur when the module s voltage potential and leakage current drive ion mobility within the module between the semiconductor. Depending on the technology different types of potential induced degradation pid occur. Solar panels depending on the leakage current between solar cells and ground has been first addressed by nrel in 2005 1. Depending on the technology different types of potential induced degradation pid occur.

The effect of hvs on long term stability of solar panels depending on the leakage current between solar cells and ground has been first addressed by nrel in 2005. One way solar panel degradation happens is through microcracks that form in the silicon of the solar cells. Depending on the technology different types of potential induced degradation pid occur. This potential degradation mechanism is not monitored by the typical pv tests listed in iec 61215.

However the potential induced degradation can occur in all solar panel types. Pid is an undesirable effect on of some solar modules. The light induced degradation lid occurs for the first time after the solar panel installation namely when the solar pv panels come into contact for the first time with sunlight and it concerns only amorphous modules thin film solar panels. The most prominent case for pid in silicon solar cell technology is sunpower s polarization effect 5 but also other technologies like a si and ribbon silicon have been reported in the past to be prone to different types of pid under certain circumstances either reversible e g.

This paper is focusing on pid of wafer based standard p type silicon technology aiming on increasing life.