Open circuit voltage protection system and method

摘要

A method 60 to clamp an open circuit voltage in a photovoltaic module 12 is proposed. The method includes coupling a load resistor 38 across an inverter module 14, initiating the inverter module and loading the inverter module via the load resistor 38, and coupling the loaded inverter module to the photovoltaic module. The method 60 further include dissipating power via the load resistor 38 to clamp the open circuit voltage of the photovoltaic module 12 , synchronizing an output voltage of the inverter module 14 with a voltage of a grid 30 and then coupling the inverter module 14 to the grid 30 and de-coupling the load resistor 38 across the inverter module 14.