Energy Storage Technologies and Devices

Abstract

An energy storage device is a multi-physic device with ability to store energy in different forms. Energy in electrical systems, so-called ?>electrical energy ?>, can be stored directly or indirectly, depending on the means of the storage medium. Devices that store the electrical energy without conversion from electrical to another form of energy are called direct electrical energy storage devices. Two major energy storage devices are ultra-capacitor energy storage (UCES) and super-conducting magnetic energy storage (SMES). Devices that convert and store the electrical energy in another form of energy are called indirect electrical energy storage devices. Electro-mechanical storage devices are flywheels, compressed air energy storage (CAES) and hydro pumped energy storage (HPES). Electrochemical energy storage devices are electrochemical batteries and fuel cells. Above mentioned energy storage technologies and devices are briefly described in this chapter. Different fields of application are also discussed.