January 25, 2023
Article from Solar Power World
Inverters help combat PID as solar technology evolves
Potential induced degradation (PID) has haunted the solar industry since its origin. This phenomenon happens when the high-voltage DC side of a solar project is installed next to other equipment with differing voltage. The discrepancy can induce sodium migration, where electrons enclosed in module glass escape and speed up module degradation.
“That inherent big magnitude drives this PID behavior, if the modules or the power electronics are not designed in a particular way to mitigate this,” said Steven Marsh, senior director of technology and design at large-scale developer Origis Energy.