Potential Induced Degradation Of Solar Cells And Panels

Solar panels depending on the leakage current between solar cells and ground has been first addressed by nrel in 2005 1.

Potential induced degradation of solar cells and panels.

This paper is focusing on potential induced degradation pid of wafer based standard p type silicon technology once exposed to external potentials in the field. It is a process which occurs only a few years after installation. Winkler solon se am studio 16 12489 berlin germany solon corporation 6950 s. Potential induced degradation of solar cells and panels.

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. Pid causes an accelerated degradation in performance which expands exponentially. This potential degradation mechanism is not monitored by the typical pv tests listed in iec 61215 2. Depending on the technology different types of potential induced degradation pid occur.

Pid is an undesirable effect on of some solar modules. This paper is focusing on pid of wafer based standard p type silicon technology aiming on increasing life. 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. 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.

The cause of the harmful leakage currents besides the structure of the solar cell is the voltage of the individual photovoltaic pv modules to the ground. Potential induced degradation pid potential induced degradation is a phenomenon that negatively affects the cells of pv modules. Potential induced degradation pid is a potential induced performance degradation in crystalline photovoltaic modules caused by so called stray currents this effect may cause power loss of up to 30 percent. Depending on the technology different types of potential induced degradation pid occur.

This paper is focusing. Potential induced degradation of solar cells and panels. This potential degradation mechanism is not monitored by the typical pv tests listed in iec 61215.