Ultra-capacitor assisted electric drives for transportation

Miller, John M.; Smith, R T

doi:10.1109/iemdc.2003.1210308

Cited by 27 publications

(4 citation statements)

References 2 publications

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“…The NiMH battery has high energy density and abuse resistance but has a high discharge rate. Polymer lithium-ion batteries have up to four times the power density of lead batteries [29]. As a result, lithium-ion batteries are presently the maximum feasible choice for storing electricity in maximum business electric-powered vehicles.…”

Section: Control Strategy For Fuel Cell Drive-trainmentioning

confidence: 99%

Energy Management and Control in Multiple Storage Energy Units (Battery–Supercapacitor) of Fuel Cell Electric Vehicles

et al. 2022

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This paper presents a new approach of energy management for a fuel cell electric vehicle traction system. This system includes a supercapacitor, a traction battery of valve-regulated sealed lead–acid type, a high-performance permanent magnet traction system, and a power electronics converter. Special attention was placed on the coordination for managing the flow of energy from several sources to treat the concerns of prolonged electric vehicle mileage and battery lifetime for drivetrains of electric vehicles. Connection to a supercapacitor in parallel with the electric vehicle’s battery affects electric vehicle battery lifetime and its range. The paper used a study case of an all-electric train, but the used methods can be applied on hybrid or electric train cases. Fuzzy logic control and proportional integral control methods were used to control the electric vehicle system. The results of these two control methods were examined and compared. The simulation results were compared between the proposed electric vehicle system and the traditional system to show the effectiveness of the proposed method. Comparison of waveforms was made with and without the supercapacitor. The proposed optimized energy management strategy could improve the overall performance of the hybrid system and reduce the power consumption.

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Section: Control Strategy For Fuel Cell Drive-trainmentioning

confidence: 99%

Energy Management and Control in Multiple Storage Energy Units (Battery–Supercapacitor) of Fuel Cell Electric Vehicles

et al. 2022

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“…Ragone charts [84][85][86][87] compare the performance of electrical energy storage devices, and provide a representation of the energy density related to the speed over which the energy can be delivered (e.g., power density). Conventional batteries and capacitors generally fall towards different ends of a Ragone chart: batteries generally deliver limited power over longer times [84][85][86]; capacitors generally deliver larger pulses for short times [87].…”

Section: Power Density (W· Kgmentioning

confidence: 99%

“…Conventional batteries and capacitors generally fall towards different ends of a Ragone chart: batteries generally deliver limited power over longer times [84][85][86]; capacitors generally deliver larger pulses for short times [87]. The Ragone positions of the natural electrocyte, the protocell with AC output and the protocell with DC output are plotted along with other technologies, shown for reference, in Figure 3.…”

Section: Power Density (W· Kgmentioning

confidence: 99%

Energy Conversion in Protocells with Natural Nanoconductors

Vanderlick

LaVan

2012

International Journal of Photoenergy

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While much nanotechnology leverages solid-state devices, here we present the analysis of designs for hybrid organic-inorganic biomimetic devices, "protocells," based on assemblies of natural ion channels and ion pumps, "nanoconductors," incorporated into synthetic supported lipid bilayer membranes. These protocells mimic the energy conversion scheme of natural cells and are able to directly output electricity. The electrogenic mechanisms have been analyzed and designs were optimized using numerical models. The parameters that affect the energy conversion are quantified, and limits for device performance have been found using numerical optimization. The electrogenic performance is compared to conventional and emerging technologies and plotted on Ragone charts to allow direct comparisons. The protocell technologies summarized here may be of use for energy conversion where large-scale ion concentration gradients are available (such as the intersection of fresh and salt water sources) or small-scale devices where low power density would be acceptable.

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“…On the other hand, the electrical torque booster may still be used to reduce CO 2 emissions in urban areas, to recover braking energy, or to improve the overall efficiency or response time of the vehicle power train. Under these circumstances, a suitable torque-sharing strategy between the ICE and the electrical machine and an appropriate energy-management strategy for the supercapacitors are essential [7], [8]. The control can be optimized according to the main objectives, such as energy consumption and acceleration behavior, in order to achieve the following: 1) ensure drivability; 2) minimize fuel consumption; 3) minimize toxic emission; 4) ensure the durability of engine/electrical torque-boost components; 5) minimize noise level.…”

Section: Sizing Of Torque-boost Componentsmentioning

confidence: 99%

Experimental Characterization of a Supercapacitor-Based Electrical Torque-Boost System for Downsized ICE Vehicles

Wang

Taylor

Sun

et al. 2007

IEEE Trans. Veh. Technol.

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ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract-The need to improve fuel economy and reduce the emission of CO 2 and other harmful pollution from internalcombustion-engine vehicles has led to engine downsizing. However, downsized turbocharged engines exhibit a relatively low torque capability at low engine speeds. To overcome this problem, an electrical torque boost may be employed while accelerating and changing gear and to facilitate energy recovery during regenerative braking. This paper describes the operational requirements of a supercapacitor-based torque-boost system, outlines the design and sizing of the electrical drive-train components, and presents experimental characterization of a demonstrator system.

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Ultra-capacitor assisted electric drives for transportation

Cited by 27 publications

References 2 publications

Energy Management and Control in Multiple Storage Energy Units (Battery–Supercapacitor) of Fuel Cell Electric Vehicles

Energy Management and Control in Multiple Storage Energy Units (Battery–Supercapacitor) of Fuel Cell Electric Vehicles

Energy Conversion in Protocells with Natural Nanoconductors

Experimental Characterization of a Supercapacitor-Based Electrical Torque-Boost System for Downsized ICE Vehicles

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