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
Single-inductor fuel cell-Li ion charger-supply IC with nested hysteretic control
TL;DR: In this paper, a single-induction, dual-input, dualoutput (SIDIDO) charger with a nested hysteretic-control scheme is presented, which draws energy from a fuel cell and conditions power to charge a Li ion and supply a 1 −V, 1 −mA load.
Book ChapterDOI
Towards a Realistic Design of Hybrid Micro-grid Systems Based on Double Auction Markets
TL;DR: A hybrid micro-grid model including wind and solar energy, loads, a double auction market and Energy Storage Systems (ESSs) is proposed, tested and validated using virtualization of the above proposed grid structure and results show the effectiveness of the proposed model and highlight the role of ESSs in stabilization.
Book ChapterDOI
The Performance Analysis of a PV System with Battery-Supercapacitor Hybrid Energy Storage System
Adel A. Elbaset,Saad A. Mohamed Abdelwahab,Hamed A. Ibrahim,Mohammed Abdelmowgoud Elsayed Eid +3 more
TL;DR: In this article, a battery would encounter frequent deep cycles and irregular charging pattern due to the varying output of PV and the intermittent high-power demand of the load, leading to sulfation and stratification.
Proceedings ArticleDOI
Study on hybrid power system for plug-in hybrid electric vehicles
Wang Yi,He Hongwen,Xiong Rui +2 more
TL;DR: Using discrete iterative algorithm and an algorithm can meet the power demand of driving conditions change has been proposed and built up and shown that it could meet the calculation accuracy needs simulation model of hybrid power system under the input excitation of variation conditions.
Proceedings ArticleDOI
Study on Dynamic Performance of Pure Electric Vehicle with Hybrid Power Supply
TL;DR: In this article, a fuzzy control strategy module is built based on fuzzy controller to allocate between the power of the storage battery and the super capacitor of a pure electric vehicle, and the simulation results are as follows: maximum climb slope is 35.36%, maximum speed can be reached 146Km/h, acceleration time of 0~100km/h is 12.29s, driving range is 312 km and it is proved that the fuzzy control policy can effectively allocate between battery and super capacitor.
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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