Corrections to “Advanced Dynamic Simulation of Supercapacitors Considering Parameter Variation and Self-Discharge” [Nov 11 3377-3385]

Abstract-This paper presents a set of experimental investigations related to the dynamic behavior of supercapacitors (SCs). The experimentally observed results are then used as inputs for the development of an improved version of one of the most common SC RC-equivalent circuit models. The key improvement concerns the accurate modeling of the diffusion phenomenon of the SC residual charge during charging/discharging and rest phases. The experimental procedure needed for evaluating the parameters of the proposed model is also given. The accuracy of the obtained model is then experimentally validated for different cycles characterized by different dynamics.

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“…In this respect, in [9], the importance of the charge movement within the SCs has been already observed.…”

Section: Experimental Evidences Ofmentioning

confidence: 87%

Improvement of Dynamic Modeling of Supercapacitor by Residual Charge Effect Estimation

Torregrossa

Bahramipanah

Namor

et al. 2014

IEEE Trans. Ind. Electron.

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“…There are limitations in representing it with a single parallel RC circuit that forms a semicircle between the real and imaginary impedance components. Circuit elements used to accurately represent diffusion include the Warburg element and the constant phase element (CPE) [9][10][11]. The Warburg element demonstrates the typical diffusion pattern of a battery that uses plate electrodes and models semi-infinite diffusion.…”

Section: Complementing the Model Using Cpe (Model 5)mentioning

confidence: 99%

“…12. Since it is mainly used to model the electrical double-layer effect, the CPE simulates an imperfect capacitor and has a specific slope in the frequency domain according to the value of d [9,12]. The CPE can be described by (4), where Q is the pseudo-capacitance and d is a variable with a value between 0 and 1.…”

Section: Complementing the Model Using Cpe (Model 5)mentioning

confidence: 99%

Modeling of Lithium Battery Cells for Plug-In Hybrid Vehicles

Shin¹,

Jeong²,

Kim³

et al. 2013

Journal of Power Electronics

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Online simulations are utilized to reduce time and cost in the development and performance optimization of plug-in hybrid electric vehicle (PHEV) and electric vehicles (EV) systems. One of the most important factors in an online simulation is the accuracy of the model. In particular, a model of a battery should accurately reflect the properties of an actual battery. However, precise dynamic modeling of high-capacity battery systems, which significantly affects the performance of a PHEV, is difficult because of its nonlinear electrochemical characteristics. In this study, a dynamic model of a high-capacity battery cell for a PHEV is developed through the extraction of the equivalent impedance parameters using electrochemical impedance spectroscopy (EIS). Based on the extracted parameters, a battery cell model is implemented using MATLAB/Simulink, and charging/discharging profiles are executed for comparative verification. Based on the obtained results, the model is optimized for a high-capacity battery cell for a PHEV. The simulation results show good agreement with the experimental results, thereby validating the developed model and verifying its accuracy.

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“…Because the power output is heavily weather dependent and changes rapidly, the battery lifetime and state-of-charge (SOC) are greatly degraded [8]. A promising new ESS technology is to use supercapacitors, which have excellent characteristics, such as a large power density, fast charge/discharge rate, high efficiency and a long cycle life [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Voltage Equalization Scheme for Supercapacitor Energy Storage System in Renewable Generation Applications

Huang

et al. 2016

Sustainability

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Due to its fast charge and discharge rate, a supercapacitor-based energy storage system is especially suitable for power smoothing in renewable energy generation applications. Voltage equalization is essential for series-connected supercapacitors in an energy storage system, because it supports the system's sustainability and maximizes the available cell energy. In this paper, we present a high-efficiency voltage equalization scheme for supercapacitor energy storage systems in renewable generation applications. We propose an improved isolated converter topology that uses a multi-winding transformer. An improved push-pull forward circuit is applied on the primary side of the transformer. A coupling inductor is added on the primary side to allow the switches to operate under the zero-voltage switching (ZVS) condition, which reduces switching losses. The diodes in the rectifier are replaced with metal-oxide-semiconductor field-effect transistors (MOSFETs) to reduce the power dissipation of the secondary side. In order to simplify the control, we designed a controllable rectifying circuit to achieve synchronous rectifying on the secondary side of the transformer. The experimental results verified the effectiveness of the proposed design.

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Corrections to “Advanced Dynamic Simulation of Supercapacitors Considering Parameter Variation and Self-Discharge” [Nov 11 3377-3385]

Cited by 22 publications

References 1 publication

Improvement of Dynamic Modeling of Supercapacitor by Residual Charge Effect Estimation

Improvement of Dynamic Modeling of Supercapacitor by Residual Charge Effect Estimation

Modeling of Lithium Battery Cells for Plug-In Hybrid Vehicles

A High-Efficiency Voltage Equalization Scheme for Supercapacitor Energy Storage System in Renewable Generation Applications

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