Measuring Electrical Parameters in Energy Storage Systems:
Learn about different energy storage technologies, including batteries and supercapacitors, and the importance of measuring electrical parameters such as voltage,
Several important parameters describe the behaviors of battery energy storage systems. Capacity [Ah]: The amount of electric charge the system can deliver to the connected load while maintaining acceptable voltage.
The main characteristics of energy storage devices are the energy density, which refers to the amount of energy that can be supplied from a storage technology per unit weight, and the discharge time, which is the period of time over which an energy storage technology releases its stored energy.
Two primary figures of merit for energy storage systems: Specific energy Specific power Often a tradeoff between the two Different storage technologies best suited to different applications depending on power/energy requirements Storage technologies can be compared graphically on a Ragone plot Specific energy vs. specific power
K. Webb ESE 471 9 Efficiency Another important performance characteristic is efficiency The percentage of energy put into storage that can later be extracted for use All storage systems suffer from losses Losses as energy flows into storage Losses as energy is extracted from storage K. Webb ESE 471 10 Round-Trip Efficiency
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