An Application of Photovoltaic Cell for Improving the Electrical Power Quality

This article applies the Photovoltaic (PV) Power conditioning system for low voltage distribution power system. The effect is compensated and protected sensitive equipment against balance/unbalance voltage Sags and interruption mitigation through Dynamic voltage restore (DVR) by three-level neutral point clamped (NPC) inverter. Strategy for the DVR controller is based on in-phase compensation with conserved energy storage DC-link from PV stand-alone system. The modeling system is designed to have reference voltage supply 0.5 pu and injected voltage 0.5 pu, PV cell system with the type of amorphous rated 5kWp. The energy storage with controlling battery charger uses buck-boost converter. The result of the controlling system contains Power conditioning load rating of 10 kVA. Simulation is also conducted paralleled along with the prototype. As a result short duration of voltage, this system can compensate voltage 0-0.9 pu. Which is used to test the cause of electric fault current. This provides guideline to further analyze and improve Power conditioning in electrical system pertinent to stand-alone photovoltaic system. Copyright (C) 2010 Praise Worthy Prize - All rights reserved.