Journal ArticleDOI
Power and life extension of battery-ultracapacitor hybrids
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TLDR
In this article, the performance of a battery-ultracapacitor hybrid power source under pulsed load conditions is analyzed using simplified models, and the authors show that peak power can be greatly enhanced, internal losses can be considerably reduced, and that discharge life of the battery is extended.Abstract:
The performance of a battery-ultracapacitor hybrid power source under pulsed load conditions is analytically described using simplified models. We show that peak power can be greatly enhanced, internal losses can be considerably reduced, and that discharge life of the battery is extended. Greatest benefits are seen when the load pulse rate is higher than the system eigenfrequency and when the pulse duty is small. Actual benefits are substantial; adding a 23 F ultracapacitor bank (3 /spl times/ 7 PC10 ultracapacitors) in parallel with a typical Li-ion battery of 7.2 V and 1.35 A hr capacity can boost the peak power capacity by 5 times and reduce the power loss by 74%, while minimally impacting system volume and weight, for pulsed loads of 5 A, 1 Hz repetition rate, and 10% duty.read more
Citations
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Proceedings ArticleDOI
Research on Battery Supercapacitor Hybrid Storage and its application in MicroGrid
TL;DR: In this article, the authors presented the utilization of a battery supercapacitor hybrid storage (BSHS) in microgrid, which is composed of batteries, supercapACitor module, BUCK/BOOST bi-directional converter (BBBC), and voltage sources converter (VSC).
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Modeling and Characterizing Supercapacitors Using an Online Method
TL;DR: A hybrid modeling approach is developed to improve the characterization of classical supercapacitor models proposed in the literature and is applied for studying the ageing of this component, which mainly depends on the temperature and cycling process.
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Constant-current regulator-based battery-supercapacitor hybrid architecture for high-rate pulsed load applications☆☆☆
TL;DR: In this article, a battery-supercapacitor hybrid system that employs a constant-current regulator isolating the battery from supercapacitors to improve the end-to-end efficiency from the battery to the load while accounting for the rate capacity effect for the Li-ion batteries and the conversion efficiency data for the regulator is presented.
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Dynamic power allocation of battery-supercapacitor hybrid energy storage for standalone PV microgrid applications
TL;DR: In this article, a multi-level hybrid energy storage system topology and its associated power management strategy is proposed to mitigate the charge/discharge stress on battery, which can improve the life expectancy of the battery and reduce the operating cost of the standalone PV-battery microgrid.
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Design criteria for the optimal sizing of a hybrid energy storage system in PV household-prosumers to maximize self-consumption and self-sufficiency
TL;DR: An innovative analytical technique was developed that assesses the techno-economic impact of battery-aging mechanisms and their influence on the optimal sizing of a hybrid energy storage system (HESS) for prosumers so as to minimize the total energy supply cost.
References
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Book
Electrochemical Supercapacitors : Scientific Fundamentals and Technological Applications
TL;DR: In this paper, the double-layer and surface functionalities at Carbon were investigated and the double layer at Capacitor Electrode Interfaces: its structure and Capacitance.
Journal ArticleDOI
Principles and applications of electrochemical capacitors
Rüdiger Kötz,M. Carlen +1 more
TL;DR: In this article, the fundamental principles, performance, characteristics, present and future applications of electrochemical capacitors are presented in this communication, and different applications demanding large ECs with high voltage and improved energy and power density are under discussion.
Journal ArticleDOI
Characterization of double-layer capacitors (DLCs) for power electronics applications
L. Zubieta,R. Bonert +1 more
TL;DR: In this article, the double-layer capacitor (DLC) for power applications is presented, and an equivalent circuit model consisting of three RC branches, one of them with a voltage-dependent capacitance is presented.
Journal ArticleDOI
Measurement and modelling of the high-power performance of carbon-based supercapacitors
TL;DR: In this article, four different testing methods including Impedance Spectroscopy, Constant Current Charging, Cyclic Voltammetry and Power Cycling were applied to each supercapacitor and the results are reviewed.
Journal ArticleDOI
Man portable power needs of the 21st century: I. Applications for the dismounted soldier. II. Enhanced capabilities through the use of hybrid power sources
TL;DR: In this paper, the authors proposed a power source with enough energy to meet the Army's preference for a 72-h mission life before the need for resupply, based on the Single Channel Ground and Airborne Radio System.
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