All state of charge (SoC) estimation algorithms based on equivalent circuit models (ECMs) estimate the open voltage (OCV) and convert it to SoC using SoC-OCV nonlinear relation. These require identification ECM parameters In literature, various techniques are proposed simultaneously identify parameters. However, simultaneous relation remains challenging. This paper presents a novel technique co...

Electrochemical impedance spectroscopy (EIS) is a powerful tool to characterize and distinguish electrochemical, electrical, diffusive processes in an electrolysis cell. The EIS response with small (mOhm) depends on components materials of the cell, but often also electrical setup, cables, connectors, leading incorrect conclusions about performance cells. These effects are assessed via short ci...

Wireless power transfer (WPT) devices represent one of the most efficient and increasingly used technologies for data in near-field range. This work analyzes describes a new type device: ferrite-cored, variable gap, high-frequency system. The classic theoretical models existing literature communication (NFC) WPT have foreseen lumped-parameters characterization based on representation an equival...

The precision of equivalent circuit model (ECM)-based state charge (SoC) estimation methods is vulnerable to the variation battery parameters, due several internal and external factors. In this regard, study proposes a fuzzy logic method for approximate ECM parameters at different temperatures SoC levels. inference system designed handle non-linear deviation from their reference values. On basi...

The capacity and voltage rating of battery packs for electric vehicles or stationary energy storages are increasing, which challenge management monitoring. Breaking the larger pack into smaller modules using power electronics to achieve dynamic reconfiguration can be a solution. Reconfigurable batteries come with their own set problems, including many sensors complex monitoring systems, high-ba...

Equivalent circuit models (ECM) of lithium ion batteries are used in many applications because their ease implementation and low complexity. The accuracy an ECM is critical to the functionality usefulness battery management system (BMS). depends on parametrization method, therefore different experimental techniques model parameter identification methods (PIM) have been widely studied. Yet, how ...

Fault-tolerant current-limiting (FTCL) high-temperature superconducting (HTS) transformers are promising components for playing a role in renewable energy integrated modern power systems. In this article, the impact of different insulation materials and cryogenic coolant fluids on electro-thermal characteristic an MW-scale FTCL-HTS transformer is investigated. For purpose, equivalent circuit mo...

The continually expanding number of electric vehicles in circulation presents challenges terms end-of-life disposal, driving interest the reuse batteries for second-life applications. A key aspect battery is quantification relative condition or state health (SoH), to inform subsequent application and match similar capacity. Impedance spectroscopy has demonstrated potential estimation health, ho...

In this paper, advanced equivalent circuit models (ECMs) were developed to model large format and high energy nickel manganese cobalt (NMC) lithium-ion 20 Ah battery cells. Different temperatures conditions, cell characterization test (Normal and Advanced Tests), ECM topologies (1st and 2nd Order Thévenin model), state of charge (SoC) estimation techniques (Coulomb counting and extended Kalman ...