Supercapacitor Modelling Analysis

摘要

Supercapacitor provides a solution to the void between energy storage and power capability. Due to its extremely high capacitance and 'capacitor' characteristics, it is able to provide much more energy compared to conventional capacitor and much higher power compared to battery. It is perfect for application requiring high power within short duration (<10s). Currently, modelling of supercapacitor and its associated parameter identification methods has developed for several years. This paper reviews different electrical supercapacitor models, where the model topology and parameter identification methods are included. The experiments show that the classic model has a similar accuracy with the two branch models and variable capacitance model in describing supercapacitor discharging process. Model topology and identification method complexity are compared to provide applicable conditions for each model.