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The electrochemical ultracapacitor is an emerging technology that promises to play an important role in meeting the demands of electronic devices and systems now and in the future. This new available technology of ultra-capacitors is making it easier for engineers to balance their energy and power usage. Power storage devices such as ultracapacitors are normally used together with the batteries to compensate for the limited capacity of the battery. Of course, proper control of energy storage systems presents both a challenge and an opportunity for the energy and energy management system.
This article traces the history of technology development and explores the principles and theory of ultracapacitor performance. The use of ultra-capacitors in various applications is discussed and their advantages over alternative technologies are considered. Systems that incorporate ultracapacitors as vital components are also explored. This document aims to provide a brief overview of ultracapacitor technology as it stands today. Previous development efforts have been described to place the current state of technology in a historical context.
Scientific background has also been covered in order to better understand the performance characteristics. Possible applications of ultracapacitor technology have also been described to illustrate the wide range of possibilities that exist. Due to the advantages of load efficiency, long service life, fast response and wide operating temperature range, it is tempting to try to apply ultra-capacitors to any application that requires energy storage.
However, the limitations of current technology should be fully appreciated and it is important to realise that the ultracapacitors are only useful within a finite range of energy and energy requirements. Beyond these limits, other alternatives are likely to be the best solution. The most important thing to remember about ultracapacitors technology is that it is a new and different technology in its own right.