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
Review of system topologies for hybrid electrical energy storage systems
Thomas Zimmermann,Peter Keil,Markus H. Hofmann,Max F. Horsche,Simon Pichlmaier,Andreas Jossen +5 more
TL;DR: In this paper, a new topology class of discrete hybrid energy storage topologies is proposed, which combine high-power (HP) and high-energy (HE) storage units.
Journal ArticleDOI
Power and life enhancement of battery-electrical double layer capacitor for hybrid electric and charge-depleting plug-in vehicle applications
TL;DR: In this paper, a new approach was proposed to perform accelerated life cycle analysis of lead-acid batteries with/without EDLC based on Dynamic Endurance Test according to standard IEC 61982-2.
Journal ArticleDOI
Design and Stability Analysis of DC Microgrid With Hybrid Energy Storage System
Srikanth Kotra,Mahesh K. Mishra +1 more
TL;DR: The stability of the dc microgrid with controllers designed using the proposed method is evaluated with digital simulation and experimental studies and an optimal supercapacitor voltage to be considered in the design is calculated.
Journal ArticleDOI
Single-Phase Grid-Connected LiFePO $_{\bf 4}$ Battery–Supercapacitor Hybrid Energy Storage System With Interleaved Boost Inverter
TL;DR: In this paper, a phase-shifted interleaved operation of the boost converters was proposed to reduce the switching frequency current ripple component in both the battery and supercapacitor currents.
Journal ArticleDOI
Regenerative Braking Modeling, Control, and Simulation of a Hybrid Energy Storage System for an Electric Vehicle in Extreme Conditions
TL;DR: In this article, the authors presented the regenerative braking quantification, design control, and simulation of a hybrid energy storage system (HESS) for an electric vehicle (EV) in extreme conditions.
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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