Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques

Galla, Stanisław; Szewczyk, Arkadiusz; Smulko, Janusz; Przygocki, Patryk

doi:10.3390/app9112311

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…Previously, a significant number of experimental investigations were carried out [16][17][18][19][20][21][22] in order to understand the characteristic behavior of UCs. Different direct measurement methods for the evaluation of UC parameters were also proposed [16][17][18][19][20]. A comprehensive review of characterization methods for supercapacitor modeling and general parameter identification techniques were also discussed [21,22].A significant amount of effort has been made to describe dynamic UC behavior using different types of equivalent circuits [23][24][25][26][27][28][29][30].…”

mentioning

confidence: 99%

Comprehensive Study on Dynamic Parameters of Symmetric and Asymmetric Ultracapacitors

et al. 2019

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Electrical storage components such as ultracapacitors (UC) have received significant attention from various industrial sectors, from electric vehicles to renewable power plants. This article presents the investigations on dynamic properties of asymmetric Li-ion hybrid (CPQ2300S: 2300 F, 2.2-3.8 V, JSR Co., Tokyo, Japan) and symmetric double-layer (BCAP3400: 3400 F, 2.85 V, Maxwell Technologies Co., San Diego, CA, USA) ultracapacitors. The internal resistance and capacitance of both UCs were slightly changed with respect to current and voltage alterations, but these changes were more prominent for the Li-ion UC. The internal resistance of the Li-ion UC became five times larger and its capacitance decreased significantly when the temperature decreased from +25 • C to −20 • C. More importantly, the double-layer UC exhibited nearly constant capacitance for a wide range of temperature changes (0 • C to −40 • C), although internal resistance increased somewhat. Electrochemical impedance spectroscopy analysis of both UCs was performed for the frequency range of 1 Hz-1 kHz and in the temperature range from −15 • C to +30 • C. It was observed that the temperature effects were much more pronounced for the asymmetric Li-ion UC than that of the symmetric double-layer UC. This work also proposes an improved equivalent circuit model based on an infinite number of resistance-capacitance (r-C) chains. The characteristic behavior of symmetric UCs can be explained precisely by the proposed model. This model is also applicable to asymmetric UCs, but with less precision. similar asymmetric UCs are also applicable to pulsed electric power sources [12,13]. Piórkowski et al. presented a case study about the application of UCs in hybrid systems including an engine start module (ESM), a photovoltaic (PV) module, a battery, and an internal combustion engine (ICE) [14]. In continuation, the hybrid model control strategy was proposed for a double active bridge-based supercapacitor energy storage system [15]. More importantly, the service lifetime of UCs is three times higher compared to electrochemical storage batteries (e.g., Li-ion or lead-acid) although UCs are relatively bulky and voluminous [16]. Consequently, there is a lack of accurate information regarding the ability of Li-ion UCs to provide voltage and current during charge-discharge cycles. Previously, a significant number of experimental investigations were carried out [16][17][18][19][20][21][22] in order to understand the characteristic behavior of UCs. Different direct measurement methods for the evaluation of UC parameters were also proposed [16][17][18][19][20]. A comprehensive review of characterization methods for supercapacitor modeling and general parameter identification techniques were also discussed [21,22].A significant amount of effort has been made to describe dynamic UC behavior using different types of equivalent circuits [23][24][25][26][27][28][29][30]. Some works presented modeling approaches based on electrochemical explanations of UC performance [31][32][33...

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confidence: 99%

Comprehensive Study on Dynamic Parameters of Symmetric and Asymmetric Ultracapacitors

et al. 2019

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“…A dynamic operation of the FC significantly affects its durability and performance by corroding its key components resulting in the degradation of platinum catalyst and increment of the mass transfer resistance [30]. The SC and DC-DC converter, however, are predicted to last for thousands of cycles under typical circumstances [31]. Hence, their costs are only correlated with the trip time to increase their impact on the optimization process.…”

Section: Nested Optimization Methodsmentioning

confidence: 99%

“…According to the US Department of Energy (DOE), FC end of life (EOL) is defined as a 10 % decline in the maximum power with an operational objective of 5000 hours [37]. However, the SC and power components are expected to last around thousands of cycles in normal conditions [31]. Therefore, their cost is linked to the above-defined trip time (∆ 𝑑𝑑𝑡𝑡𝑎𝑎𝑒𝑒 ) to increase their importance in the optimization process, which is the total time divided by the operational objective of 5000 hours.…”

Section: Nested Optimization Methodsmentioning

confidence: 99%

Effects of Price Range Variation on Optimal Sizing and Energy Management Performance of a Hybrid Fuel Cell Vehicle

Macias

Kandidayeni

Boulon

et al. 2023

IEEE Trans. Energy Convers.

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The usage of multi-objective cost functions (MOCFs) in sizing and energy management strategy (EMS) of fuel cell hybrid electric vehicles (FCHEVs) has expanded due to the participation of multiple technological and economic disciplines. To better understand the impact of price fluctuation on the component size and EMS of an FCHEV, this article proposed a sensitivity analysis methodology. First, a two-step optimization approach that considers hydrogen consumption, system degradation, and trip cost is used to minimize a MOCF of the Can-Am Spyder electric motorcycle simulator. Then, an effect analysis is carried out for the cost-optimal results under two driving profiles to understand the link between cost variation and system performance. These simulations indicate that each might result in different system sizes and EMS compromise. After that, an online optimization EMS based on sequential quadratic programming is used on a reduced-scale hardware-in-the-loop configuration to evaluate the simulation results with varied weights. Experimental results indicate that when an adequate size is used for each pair of weights, the EMS results in a 6 % decrease in the trip cost.

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“…The protection potential measuring unit measures PP U , and the influencing factor transforming unit transforms them into various parameters of influencing factors {v(t)}. The measured [9][10][11][12] protection potential PP U and the variety of influencing factor parameters {v(t)} are sent to the protection potential value estimating unit, which determines the assessment of Q (whether the protection potential PP…”

Section: Block Diagram Of a Device For Ewh Corrosion Protection Potenmentioning

confidence: 99%

Diagnostics of Corrosion Protection Potential for Electric Water Heaters

2019

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The paper represents the mathematical model for diagnostics of the corrosion protection potential for the electric water heaters (EWH). The research objectives are the problem of determining the EWH corrosion protection technical condition during its operation. The EWH corrosion protection diagnostics is based on the mathematical model of the corrosion protection potential for EWH. The model is based on the nonlinear equivalent circuit which is modelling the nonlinear impedance of the corrosion cathodic protection. In the development of the mathematical model the authors carried out experimental measurements of the impedance for the EWH body fragment. The obtained experimental results show that mathematical model includes the fractional integrating elements. By using of the experimental results the expressions of the impedance, the impulse response is obtained. The methodological approach to increasing the reliability of the EWH corrosion protection diagnostics has been proposed, in terms of the multi-parameter diagnostics, by applying the EWH corrosion protection impedance model.

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Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques

Cited by 8 publications

References 27 publications

Comprehensive Study on Dynamic Parameters of Symmetric and Asymmetric Ultracapacitors

Comprehensive Study on Dynamic Parameters of Symmetric and Asymmetric Ultracapacitors

Effects of Price Range Variation on Optimal Sizing and Energy Management Performance of a Hybrid Fuel Cell Vehicle

Diagnostics of Corrosion Protection Potential for Electric Water Heaters

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