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

fYear

1993

fDate

10-14 May 1993

Firstpage

1119

Lastpage

1124

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 1993., Conference Record of the Twenty Third IEEE

Conference_Location

Louisville, KY

Print_ISBN

0-7803-1220-1

Type

conf

DOI

10.1109/PVSC.1993.346967

Filename

346967