Abstract Over a period of some 5 years Canadian Astronautics Limited (CAL) has developed a system to autonomously manage, and thus prolong the life of secondary storage batteries. During the development, the system has been aimed at the space vehicle application using nickel-cadmium batteries but it is expected to be able to enhance the life and performance of any rechargeable electrochemical couple. The system handles the cells of a battery individually and thus avoids the problems of over, and under, drive that inevitably occur in a battery of cells managed by an averaging system. This individual handling also allows cells to be totally bypassed m the event of failure, thus avoiding the losses associated with low capacity, partial short circuit, and the catastrophe of open circuit. read more

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Abstract The author present a new model  for the aging of a Lead-Acid battery which is based on the initial model of the Shepherd.The proposed model allows to predict temporal variations of the Shepherd coefficients and to control the deterioration of  battery parameters and  performances.The model validation has been realised by the recursive least square algorithm by using long term measurements under several socialisation.This study will improve the storage section of stand alone photovoltaic systems and reduce the overloads and deep discharges. Keywords:Shepherd Model,Recursive Least Square Algorithm,Less Battery Storage System Download read more

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Abstract While energy storage technologies do not represent energy sources, they provide valuable added benefits to improve stability, power quality, and reliability of supply. Battery technologies have improved significantly in order to meet the challenges of practical electric vehicles and utility applications. Flywheel technologies are now used in advanced nonpolluting uninterruptible power supplies. Advanced capacitors are being considered as energy storage for power quality applications. Superconducting energy storage systems are still in their prototype stages but receiving attention for utility applications. The latest technology developments, some performance analysis, and cost considerations are addressed. This paper concentrates on the performance benefits of adding energy read more

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