Pid Solar Panel
The cause of the harmful leakage currents besides the structure of the solar cell.
Pid solar panel. Potential induced degradation also called pid is a performance degradation in crystalline solar pv modules induced by potential voltage. As the install environment cannot be changed the easiest way to avoid pid damage to the panel is to chose a solar panel who via manufacturing quality has inbuilt pid resistance. Because of poor grounding high voltages and inadequate shielding between individual solar cells leakage occurs which dramatically reduces the electricity yield of solar panels. In this article we look at potential induced degradation pid and how to reverse or even prevent this phenomenon in solar pv installation.
Potential induced degradation or pid is a process that causes silicon solar modules to reduce their output when operating at high voltages for long periods of time. Solar projects has raised the threat level of potential induced degradation pid of solar panels. Potential induced degradation pid is well known and feared by solar panel manufacturers the world over. What is the pid problem.
The increased usage of transformerless inverters on u s. 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. As the install environment cannot be changed the easiest way to avoid pid damage to the panel is to chose a solar panel who via manufacturing quality has inbuilt pid resistance. In some solar power plant systems pid also known as surface polarization has been found to cause drops in output of up to 30 after only a few years of operation.
Pid happens when different components in the same system are at different voltage potentials such as the frame and the solar cell which can allow electrical current to leak and modules to. 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. The solar electric power system and surrounding install environment interact to cause pid. It is an important issue of performance degradation in crystalline silicon solar panels.
For solar panel owners neither the pid effect nor its impact on the output of the pv system is immediately visible. The solar electric power system and surrounding install environment interact to cause pid. Pid stands for potential induced degradation. What is potential induced degradation pid.