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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Patent
Modular multilevel converter for hybrid energy storage
Guo Feng,Sharma Ratnesh +1 more
TL;DR: In this article, a multilevel converter for hybrid energy storage includes a battery and three phases are connected in serial to the battery and in parallel to one another, each phase having two arms of sub-modules and buffer inductors.
Journal ArticleDOI
Power Management Strategies in a Hybrid Energy Storage System Integrated AC/DC Microgrid: A Review
TL;DR: In this paper , an analytical study related to power management strategies is given along with different interconnection topologies for the hybrid energy storage system (HESS) along with various control techniques specific to different energy storage devices, which would serve as a complete guide for the design and implementation of a hybrid AC/DC microgrid.
Journal ArticleDOI
Design Balancing Systems for Supercapacitors Based on Their Stochastic Model
TL;DR: A stochastic supercapacitor model is analyzes and the model is used to estimate the losses for different balancing methods and guidelines for designing a super capacitor bank that includes balancing networks are proposed.
Journal ArticleDOI
Empirical evaluation of the improvement of battery output when coupled with a capacitor bank
TL;DR: In this article, it has been demonstrated experimentally that a capacitor bank when connected in parallel with a battery increases the energy output by mitigating the effects of high current spikes in the load.
Proceedings ArticleDOI
Sizing considerations for ultracapacitors in hybrid energy storage systems
TL;DR: In this paper, an ultracapacitor placed in parallel with a battery can assist in maintaining a bus voltage within the regulatory limits in the aerospace field, where the bus voltage must be maintained within certain margins.
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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