Title :
Improved PV system performance using vanadium batteries
Author :
Largent, Robert L. ; Skylas-Kazacos, M. ; Chieng, John
Author_Institution :
Centre for Photovoltaic Devices & Syst., New South Wales Univ., Kensington, NSW, Australia
Abstract :
A vanadium-vanadium redox battery can improve photovoltaic system performance, reliability and robustness by increasing the energy conversion efficiency of the battery to 87%, by making the battery life, efficiency and ongoing energy capacity independent of state of charge and load profiles and by reducing maintenance requirements. High battery efficiency reduces the required PV while a battery life insensitive to battery usage relaxes system constraints. These advantages are utilised in a demonstration PV system in Thailand that was designed specifically to use vanadium technology. Following a 12 month field testing program with 4 kW vanadium batteries, 300 systems consisting of 2-4 kW PV, a 4 kW, 15 kWhr, vanadium battery and a 4 kVA grid interactive inverter are intended to be installed in residences in Thailand
Keywords :
photovoltaic power systems; reliability; secondary cells; vanadium; 12 month; 4 kW; 87 percent; PV system performance improvement; Thailand; V; battery life; energy capacity; energy conversion efficiency; maintenance requirements reduction; reliability; robustness; vanadium-vanadium redox battery; Australia; Automotive engineering; Batteries; Chemical technology; Energy conversion; Energy storage; Maintenance; Photovoltaic systems; Power engineering and energy; System performance;
Conference_Titel :
Photovoltaic Specialists Conference, 1993., Conference Record of the Twenty Third IEEE
Conference_Location :
Louisville, KY
Print_ISBN :
0-7803-1220-1
DOI :
10.1109/PVSC.1993.346967
