SOLAR PHOTOVOLTAIC SYSTEM AND ENERGY COLLECTION OPTIMIZING METHOD AND FAULT DETECTION METHOD THEREOF

摘要

A solar photovoltaic system and an energy collection optimizing method and fault detection method. The solar photovoltaic system includes multiple photovoltaic components (101) for collecting solar energy to generate direct current; multiple micro optimizers (102) input ends of which are respectively connected with each photovoltaic component (101) and output ends of which are connected in series with each other and used for optimizing the output current and/or output voltage of each photovoltaic component (101) to generate the maximum power; a manager (103) communicated with the multiple micro optimizers (102) and used for managing the working state of each micro optimizer (102); a inverter (104) connected with a string or multiple strings of micro optimizers (102) and used for converting direct current optimized to alternating current and connecting to grid output. The solar photovoltaic system, collecting the maximum power generated by each photovoltaic component and outputting static direct current voltage, could employ different type of photovoltaic components with different rated power even from different manufacturers and material in a solar photovoltaic system.