Journal ArticleDOI
Power and life extension of battery-ultracapacitor hybrids
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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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Journal ArticleDOI
Study on Hybrid Energy Storage System of Super-Capacitors and Batteries
TL;DR: In this article, a bi-directional DC/DC converter of the super-capacitor and battery hybrid energy storage system was designed to improve the battery charge and discharge process.
Journal ArticleDOI
Comprehensive Assessment of Fault-Resilient Schemes Based on Energy Storage Integrated Modular Converters for AC-DC Conversion Systems
TL;DR: This paper investigates the operational and economic characteristics of different ac/dc fault-resilient schemes using energy storage integrated modular converters in ac-dc conversion applications and recommends the schemes with independent ESSs due to their high operational flexibility.
Dimensionnement multi-objectif d'une association batterie – supercondensateur pour une application photovoltaïque
TL;DR: In this paper, a methodologie d'association d'ESE is presented, which peuvent etre plutot destines a fournir de l'« energie '' (ESE ayant une grande energie specifique exprimee en Wh/kg) comme des batteries au plomb-acide, lithium-ion, Ni-MH avec d'autres ESE of type '' puissance'' comme DES supercondensateurs (SC) ou des batteries lithium ion dediees.
Micro-hybrid with Ultra-Capacitor Based Three-Wheeler
TL;DR: In this paper, a three-wheeler with regenerative braking and stop-start was installed in a MATLAB-based system for an explorer vehicle, where the Ultra-Capacitor along with traditional battery was used to save fuel.
Journal ArticleDOI
Scheduling of dual supercapacitor for longer battery lifetime in safety-critical embedded systems with power gating
TL;DR: A suboptimal version of B2SC (B2SCsopt) is introduced, where the SCs areconnected to the PG components requiring higher inrush current while rest remains connected to the battery.
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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