Performance Evaluation of a Supercapacitor Module for Energy Storage Applications

This paper presents and evaluates the effect of charge/discharge rate on the supercapacitor's temperature. Experiments show that during charging the temperature rises more than during discharging. The paper also investigates the supercapacitor's energy efficiency as a function of the discharge time and the level of the voltage discharge ratio. Where the voltage discharge ratio is defined as the ratio between the minimum allowed voltage at certain discharge time and tire maximum voltage at fully charged It was found out that the lower the discharge time, the lower the efficiency. Moreover a mathematical model for the efficiency as a function of discharge time was developed and verified experimentally.