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
Experimental validation of the ultracapacitor parameters using the method of averaging for photovoltaic applications
TL;DR: In this article, the Averaging Point Method (APM) is proposed to model the ultracapacitor, which takes into account the dynamic behavior of the ultra-capacitor.
Review of Ultracapacitor Technology and its Applications
TL;DR: In this paper, a simple ultracapcitor and battery model with pulse load is simulated in MATLAB-SIMULINK without and with DC to DC buck boost converter to prove ultracAPcitor as a peak power supply device.
Proceedings ArticleDOI
Ultracapacitors and energy storage: Applications in electrical power system
S.C. Smith,Pankaj K. Sen +1 more
TL;DR: In this paper, the authors summarized the research and development status and applications of ultracapacitor in electric power systems and summarized the applications of such devices in electric powered vehicles.
Journal ArticleDOI
An Improved Energy Management Strategy for Hybrid Energy Storage System in Light Rail Vehicles
TL;DR: In this article, a single-objective optimization energy management strategy (EMS) for an onboard hybrid energy storage system (HESS) for light rail (LR) vehicles is proposed, which reduces the battery and supercapacitors losses while maintaining the SC state of charge (SOC) within specific limits based on the distance between consecutive LR stations.
Proceedings ArticleDOI
Active management of a heterogeneous energy store for electric vehicles
TL;DR: In this paper, a rate-heterogeneous energy storage system, combining low-rate batteries and high-rate supercapacitors, is proposed to optimize power management by exploiting topographic information, traffic history, and specific driver performance.
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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