SYSTEM AND METHOD FOR OVER-VOLTAGE PROTECTION OF A PHOTOVOLTAIC STRING WITH DISTRIBUTED MAXIMUM POWER POINT TRACKING

摘要

A string over-voltage protection system and method for arrays of photovoltaic panels (205). The system and method includes a device (220) for use in a photovoltaic array power system. The device includes a voltage converter (225). The voltage converter is adapted to be coupled to a photovoltaic panel in a string (210) of photovoltaic panels. The device also includes a string over-voltage protection circuit (505). The string over-voltage protection circuit is coupled to the voltage converter. The string over-voltage protection circuit senses a string voltage and determines if a string over-voltage condition exists. Additionally, the string over-voltage protection circuit is configured to disable the voltage converter in the event of a string over-voltage condition.