Overcoming DC-AC converter faults in solar photovoltaic power systems

摘要

Inverter failure is can be a significant problem in solar photovoltaic systems as it can lead to loss of opportunity to harvest energy. A solar photovoltaic (PV) power generation system is described comprising solar PV panels 10 and respective power conditioning units 12 including DC-AC converters. A DC power distribution bus 16 is coupled to the solar PV panels 10 and the power conditioning units 12 to switchably share dc power from the solar PV panels between the power conditioning units. Power distribution controllers 18 detect a faulty power conditioning unit and reroute power from a solar PV panel coupled to the faulty power conditioning unit to other power conditioning units via the dc distribution bus.