Title :
A battery management system for stand-alone photovoltaic energy systems
Author :
Duryea, Shane ; Islam, Syed ; Lawrance, William
Author_Institution :
Western Power Corp., Jandakot, WA., USA
fDate :
6/1/2001 12:00:00 AM
Abstract :
It is estimated that about 80% of all photovoltaic (PV) modules are used in stand-alone applications. Continuous power is obtained from PV systems by using a storage buffer, typically in the form of a lead acid battery. Batteries used in PV applications have different performance characteristics compared with batteries used in more traditional applications. In PV applications, lead acid batteries do not reach the cycle of lead acid batteries used in other applications such as uninterruptible power supplies or electric vehicles. The shortened battery life contributes significantly to the costs of a PV system. In some PV systems the battery accounts for more than 40% of the life cycle costs. An increase in the lifetime of the battery will result in improved reliability of the system and a significant reduction in operating costs. The life of a lead acid battery can be extended by avoiding critical operating conditions such as overcharge and deep discharge. This paper presents a battery management system for such applications
Keywords :
battery chargers; lead acid batteries; photovoltaic power systems; Pb; battery life; battery management system; deep discharge prevention; lead acid battery; life extension; overcharge prevention; reliability; stand-alone photovoltaic energy systems; storage buffer; Battery charge measurement; Battery management systems; Buffer storage; Costs; Energy storage; Hybrid electric vehicles; Photovoltaic systems; Renewable energy resources; Solar power generation; Uninterruptible power systems;
Journal_Title :
Industry Applications Magazine, IEEE
DOI :
10.1109/2943.922452