Effects of resistive aging on the operational dynamics of supercapacitors in fast-charging systems

Abstract

This article analyzes the impact of resistive aging on the operational dynamics of a fast-charging system composed of supercapacitor banks, using the equivalent circuit method. The effects of resistive aging in the charging station are modeled through a time-dependent exponential function, controlled by a positive parameter. The results indicate that an increase in internal resistance reduces the maximum current and the duration of the charging process, affecting the energy transfer within the system. Furthermore, the rise in internal resistance leads to greater voltage dispersion, compromising the system's energy efficiency. The analysis of dissipated energy confirms that the aging of internal resistance increases energy losses, reducing overall efficiency.