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
Power-Efficient Hybrid Energy Storage System for Seismic Nodes
Dauda Duncan,Adamu Murtala Zungeru,Mmoloki Mangwala,Bakary Diarra,Bokani Mtengi,Thabo Semong,Joseph Chuma +6 more
TL;DR: Simulations of Nsukka seismic node are presented, showing the neural network model delivered efficient power with duty cycles across the converter and relatively less complexities, while the supercapacitor complemented the lead-acid battery and delivered an overall efficiency of about .
Book ChapterDOI
Real-Time Frequency-Decoupling Control for a Hybrid Energy Storage System in an Active Parallel Topology Connected to a Residential Microgrid with Intermittent Generation
TL;DR: A study by simulation of the performance of a Hybrid Energy Storage System (HESS) integrated to a residential microgrid using an optimization-based real-time frequency-decoupling control strategy.
Proceedings ArticleDOI
Research of multipurpose optimization control in hybrid energy storage system
TL;DR: In this article, a linear weighted summation algorithm based on variable weights is proposed to obtain current reference of supercapacitor and battery for photovoltaic power generation system.
Proceedings ArticleDOI
An integration scheme for a direct AC line battery-supercapacitor hybrid energy storage system
TL;DR: In this paper, a standalone direct AC line battery-supercapacitor hybrid energy storage system based on a novel configuration and its associated control strategy is proposed, which allocates the high frequency power component to the supercapacitors while the battery supplies the DC power.
Proceedings ArticleDOI
Enhancement of Li-ion Battery Performance at Low Temperatures by DC-DC Converter Duty-cycle Autotuning
TL;DR: In this article, the authors proposed a method to maximize the power that can be extracted from a battery at low temperatures by operating the DC-DC converter at the input voltage which maximizes the discharge power of 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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