Lithium-ion (Li-ion) batteries widely used in electric vehicles (EVs) and hybrid EVs (HEVs) are insufficient for vehicle use after they have degraded to 70% 80% of their original capacity. Battery lifespan is a large consideration when designing battery packs EVs/HEVs. Aging mechanisms, such as metal dissolution, growth the passivated surface film layer on electrodes, loss both recyclable lithium ions, affect longevity Li-ion at high-temperature operations. Even maneuvers low temperatures...

In view of their potential for high dielectric breakdown strengths, low dissipation factors, and good stability over a wide range frequencies temperature, metallized films capacitors are very used components aeronautic applications. Nevertheless, remain unreliable components; acquaintance deterioration time would enable us to perform predictive maintenance on the component thus improve availability whole system. This operation requires knowledge capacitor ageing law failure mechanisms...

Despite their great improvements, reliability and availability of power electronic devices always remain a focus. In safety-critical equipment, where the occurrence faults can generate catastrophic losses, health monitoring most critical components is absolutely needed to avoid prevent breakdowns. this paper, noninvasive method proposed. It based on fuzzy logic neural network estimate predict equivalent series resistance (ESR) capacitance (C) capacitors supercapacitors (SCs). This method,...

In hybrid vehicles, lithium-ion cells constituting a battery pack are frequently used to provide and recover high power assist the vehicle's internal combustion engine (ICE) powertrain. This usage is more present in mild applications where does not have long discharge time. Under such conditions, pack's series resistance R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</sub> proved be an important parameter monitor since its evolution depends...

Energy storage elements such as supercapacitors are widely used in high-power applications. However, due to single cell voltage limitation, an energy system with a large number of is often employed. management systems associated order assure user and equipment safety. Balancing circuits, which enable the equalization each element series, part device. The work presented this paper aims enhance lifetime systems. It relies on better controlling balancing circuits terminals elements. With...

This paper presents a fully embedded state of health (SoH) estimator for widely used C/LiFePO4 batteries. The SoH estimation study was intended applications in electric vehicles (EV). cells were aged using pure vehicle cycles and monitored with an automotive battery management system (BMS). An online capacity based on incremental analysis (ICA) is developed. proposed robust to depth discharge (DoD), charging current temperature variations satisfy real requirements. Finally, the tuned from...

Supercapacitors (SCs) impedance modeling represents one important key to get information for SCs health monitoring and simulation. As a matter of fact, behavior is dependent on various parameters such as pore size distribution electrodes, electrolyte state, temperature, aging, etc. We propose in this study model SC taking into account physical considerations. Basing the theory homogenous structure impedance, we first define single using uniform pores distribution. In second step, attempt...

Second-life applications for lithium-ion batteries offer the industry opportunities to defer recycling costs, enhance economic value, and reduce environmental impacts. An accurate prognosis of remaining useful life (RUL) is essential ensuring effective second-life operation. Diagnosis a necessary step establishment reliable prognosis, based on aging modes involved in cell. This paper introduces method characterizing specific phenomenon Graphite/Lithium Iron Phosphate (G/LFP) cells. aims...

The fraud phenomenon and the results of 2023 SPI indicate that risk in management procurement goods services Regional Government G is still at alert status. This study aims to analyze effect internal control system organizational commitment on prevention, as well role Good Governance a moderating variable. contributes development financial science provides practical recommendations for governments companies formulating policies. uses quantitative methods with surveys experiments. population...

The dataset gives a comprehensive data collection focusing on the ageing of twenty 18650 Graphite/LFP 1.1 Ah commercial cells in first and second life. from pristine state up to 40% capacity loss is uncommon due extensive testing time required. Therefore, this new provides insights long-term lithium-ion batteries. initial aim study was comprehend second-life applications, with special focus sudden acceleration that can occur after use. experiment designed assess impact various test...

Like any electric energy storage system, supercapacitors have a limited lifetime. Indeed, they degrade with time because of parasitic reactions between electrodes and electrolyte. Porous are complex structures pores size dispersion manufacturing processes. This paper proposes to study the specific impact supercapacitor floating ageing on different pore sizes using multipore model. The model is an equivalent electrical circuit model, capable representing impedance behavior in full range its...

This paper presents a fully embedded State of Health estimator for widely used lithium iron phosphate batteries. The study was done including technical and cost constraints automotive industry. An online using Incremental Capacity Analysis Butterworth filter is studied. Cells were aged pure electric vehicle cycles monitored with an Battery Management System. Using this electronic platform considering incomplete charge/discharge cycles, 2% accurate proposed.

Compared to Li-ion batteries, supercapacitors (SCs) boast longer lifespan, higher power density, and wider operational temperature range. Nevertheless, SCs are expensive (almost 40 times more per watthour than batteries). aging is critical. Two types of tests usually performed. Floating apply constant constraints (voltage temperature), cycling multiple charges discharges. We focus our study on floating [corresponding for instance parking mode electrical vehicles (95% the time) or...

The driving range of electric vehicles is a complex issue. In simulation, this determined by coupling battery model and traction the vehicle. But most models used for such studies do not take into account interaction between temperature (impacting its electrical parameters) studied EV. paper, electro-thermal (with all parameters dependent upon temperature) dynamically coupled with an Simulation results are provided to show impact on range. initial (without dependence) leads overestimation...

Modular multilevel converters (MMCs) have been recognized as the most attractive technology for high voltage direct current (HVDC) applications during last years. Their advantages include ability to freely control internally stored energy in distributed submodules (SMs) and independently AC DC powers. Recent studies showed that an MMC can take advantage of this degree freedom supply ancillary services with low requirements such frequency response or power oscillation damping by connecting...

This paper presents the aging test results of a 100Ah prismatic LiFeMnPO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> battery cell at low temperatures. Accelerated tests have been carried out on 4 cells to address effect cold temperatures Lithium-ion (Li-ion) batteries. Three them were aged through normalized driving cycle three temperature (-20°C, 0°C and 25°C). The calendar was one single -20°C mid-range SOC (50%). Their capacities...

Metalized film capacitors are commonly used components in power electronics applications and their characteristics drastically dependent on operating frequency. Parasitic parameters could appear at low high frequencies disturb substantially the behavior of component. Proper design metalized requires an understanding all parasitic parameters' sources impacts circuit operation. This paper presents a modeling approach based complex form capacitor impedance to build its equivalent electrical...