Accurate Supercapacitor Modeling for Energy Harvesting Wireless Sensor Nodes

Weddell, Alex S.; Merrett, Geoff V.; Kázmierski, Tom J.; Al-Hashimi, Bashir M.

doi:10.1109/tcsii.2011.2172712

Cited by 114 publications

(53 citation statements)

References 10 publications

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“…The more common models adopted in literature are the 2-branch [4]- [12] and the 3-branch [13]- [1] ones; the first, being simpler, leads up to less complex computations; the second, although more complicated, approximate the behaviour of a real DLC better. However, for power applications, a simpler 2 branches model with a voltage dependent capacitor series connected with a resistor and a series of a linear resistor with a linear capacitor is adopted [1]- [6].…”

Section: B Model Findingmentioning

confidence: 99%

Observability of a 2-branch Double-Layer-Capacitor

Alonge¹,

Cirrincione²,

Vitale³

et al. 2024

RE&PQJ

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Abstract. The paper proposes a study of the observability of a 2-branch Double-Layer Capacitor (DLC) mathematical model, derived from its well known 2-branch nonlinear physical model. The study is a basis to perform the diagnosis of the system by employing observers. The analysis is carried out by means of the sufficient rank condition of the observability matrix for nonlinear models. It is shown that the rank condition is satisfied everywhere in the two-dimensional state space, except for a characteristic curve in the plane defined by the two state variables. This curve is usually outside the usual range of operation of Double-Layer Capacitors available on the market. Finally, it is shown that the above curve is sensitive to the resistance of the branch containing the nonlinear capacitance, i.e. the faster branch. In particular, increasing this resistance can cause the curve to intersect the region of usual range of operation of a DLC.Keywords. DLC, SC, supercapacitor, observability, state-space, diagnosis. List of variables Variables(s) DescriptionDim.

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Section: B Model Findingmentioning

confidence: 99%

Observability of a 2-branch Double-Layer-Capacitor

Alonge¹,

Cirrincione²,

Vitale³

et al. 2024

RE&PQJ

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“…Various research papers have covered different RC models to explain the SC performance [30]. However, such models are suited only for a limited range of frequencies.…”

Section: Frequency Responsementioning

confidence: 99%

Performance of Commercially Available Supercapacitors

2017

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High energy density storage device exhibiting a reliable lifecycle is needed in the 21st century. Hence, energy storage research is critical for reducing energy consumption. Supercapacitors exhibit such characteristics via interfacial ion electrosorption and fast redox reactions. They are a feasible solution for transportation applications, among others, due to their superb characteristics. In this paper, we provide a background on supercapacitors, review public data on commercially available supercapacitors for performance characteristics, and finally summarize their performance in terms of energy density, equivalent series resistance, and device time consistency.

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“…More complex systems allow the harvesters and energy storage devices to be exchanged, with similar constraints. In particular different storage technologies offer different characteristics well known in literature [9], [10].…”

Section: System Design Taxonomymentioning

confidence: 99%

A Survy of Multi-Source Energy Harvesting Systems

Weddell¹,

Magno²,

Merrett³

et al. 2013

Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition (DATE), 2013

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Abstract-Energy harvesting allows low-power embedded devices to be powered from naturally-ocurring or unwanted environmental energy (e.g. light, vibration, or temperature difference). While a number of systems incorporating energy harvesters are now available commercially, they are specific to certain types of energy source. Energy availability can be a temporal as well as spatial effect. To address this issue, 'hybrid' energy harvesting systems combine multiple harvesters on the same platform, but the design of these systems is not straightforward. This paper surveys their design, including trade-offs affecting their efficiency, applicability, and ease of deployment. This survey, and the taxonomy of multi-source energy harvesting systems that it presents, will be of benefit to designers of future systems. Furthermore, we identify and comment upon the current and future research directions in this field.

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Accurate Supercapacitor Modeling for Energy Harvesting Wireless Sensor Nodes

Cited by 114 publications

References 10 publications

Observability of a 2-branch Double-Layer-Capacitor

Observability of a 2-branch Double-Layer-Capacitor

Performance of Commercially Available Supercapacitors

A Survy of Multi-Source Energy Harvesting Systems

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