The electrochemical storage of energy in various carbon materials (activated carbons, aerogels, xerogels, nanostructures) used as capacitor electrodes is considered. Different types of capacitors with a pure electrostatic attraction and/or pseudocapacitance effects are presented. Their performance in various electrolytes is studied taking into account the different range of operating voltage (1...

This article focuses on developing a finite-element method (FEM) model for large capacitors’ thermal modeling and reliability analysis. Thermal capacitors is critical since the capacitor’s lifetime depends maximum temperature. Typically, have been modeled as solid element, not considering internal geometry, leading to temperature estimation errors requiring extensive testing adjust model. The p...

This paper proposes a model based approach for prognosis of DC-DC power converters. We briefly review the prognosis process, and present an overview of different approaches that have been developed. We study the effects of capacitor degradation on DC-DC converter performance by developing a combination of a thermal model for ripple current effects and a physics of failure model of the thermal e...

Generating electrical current from mechanically forced variation of the contact area of electrode/electrolyte interface underpins one of the scenarios of harvesting electrical current from walking. We develop here theory of an electrical shoe with a porous sole with an account of both convection of the liquid electrolyte under pressure and ion migration with transmission-linetype charging of el...

Smart Battery Chargers (SBCs) implementing grid-forming (GFM) control strategies are a promising solution to provide voltage and frequency support, increasing the grid reliability. Typically, GFM studies consider inverters with high DC-link capacitance. Therefore, there is research gap in two-stage DC-AC converters small capacitance strategies. This article proposes novel approach implement str...

This paper proposes a control method for an electrolytic capacitor-less dual inverter compressors. Single-phase motor drive systems are required to minimize vibrations, maintain high power factor, and meet the limit harmonic current emissions. The proposed achieves reduction of dq-axis currents, low grid THD under periodic load torque fluctuations. effectiveness is demonstrated via experimental...