Combination of Supercapacitor and AC Power Source in Storing and Supplying Energy for Computer Backup Power

Abstract

This paper presents the charge and discharge combination of the supercapacitors and the AC power source in storing and supplying energy for computer backup power. According to the behavior of storing and supplying energy, the SC can be charged with high currents. Whereas the battery cannot. The supercapacitors efficiency in storing and supplying power at high voltage and low current is 95.20%. An analysis also revealed that the charging time of the supercapacitors is less than 199 s. The combination of the supercapacitors and the battery required 604 s for charging time. The battery alone is the longest at 1080 s. Moreover, the study showed that the discharging time of the supercapacitors and the battery combination was more than 610 s. The discharging time of the battery and the supercapacitors were 285 and 579 s, respectively. Therefore, the combination of the supercapacitors and an AC power source can replace battery in the design of computer backup.

Optimal Charging and Discharging of Supercapacitors

“…Due to their significant properties such as high power capabilities, low internal resistance and wide operating temperature window, ultracapacitors are indispensable parts of various applications. These applications include but not limited to: energy harvesting, 3 regenerative braking, 4,5 solar and wind power systems, 6 wireless sensors, 7 wearable devices, 8 uninterrupted power supplies, 9 electric vehicles, 10 and power regulators. 11 Energy is always dissipated through resistive circuit elements whenever there is a current flow.…”

A photovoltaic system using supercapacitor energy storage for power equilibrium and voltage stability

“…Supercapacitor technology is relatively new, and its incorporation into many systems is still under evaluation. Many papers have presented supercapacitors as power devices in electric vehicles [18], and some work has been done on their use in uninterrupted power supplies [19]. Supercapacitors are also undergoing tests as storage devices in power grids for improvement of grid performance and financial gains [20], [21].…”