Search results for "wireless power transfer"

showing 10 items of 31 documents

A Small Power Transmission Prototype for Electric Vehicle Wireless Battery Charge Applications

2012

In this paper a low cost prototype of wireless power transfer system based on air coupling is presented. The system here proposed can be useful for electric vehicle (EV) battery charging systems. It consists mainly of two copper wire coils, placed one in front of the other on the same axis. The inductor coil can easily be placed under the road surface (in a parking), while the other (the receiver coil) in the lower side of the vehicle. By exploiting the coils resonance coupling effect, electric energy can be transferred from the inductor coil to the receiver in order to charge the batteries. Low cost experimental tests carried out at DIEETCAM - University of Palermo, demonstrated the effect…

Battery (electricity)EngineeringPower transmissionResonant inductive couplingbusiness.product_categorybusiness.industryElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciInductorWireless transmissionbattery chargerElectromagnetic coilElectric vehicleAutomotive batteryWireless power transferbusinesselectric vehicles
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E-bike battery charging: Methods and circuits

2013

Today, academic and industrial research is focused on innovative battery charging methods to ensure complete mobility of both handheld devices and electric vehicles. Wireless power transfer is actually the leading strategy even if efficiency related issues are to be solved for a successful marketing. In this paper, a wireless battery charging station is proposed for electric assisted pedal bikes. If compared with existing wireless solutions, the proposed system architecture improves power conversion efficiency of the charging equipment. The simulation model of the whole charging station is described in detail. The transmitter, receiver and inductive coupling circuits are described and desig…

Battery (electricity)Engineeringbusiness.industryvehicular and wireless technologieTransmitterElectrical engineeringwireless power transferTopology (electrical circuits)Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciCharging stationSystems architecturewireless battery chargingWirelessinductive power transferAutomotive batteryWireless power transferbusiness2013 International Conference on Clean Electrical Power (ICCEP)
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Wireless battery charging for electric bicycles

2017

The contactless solution is increasingly spreading as method of battery charging for Electric Vehicles (EVs). The standard technology of contactless EV battery charging is based on the Inductive Power Transfer (IPT) between two coupled coils, one connected to the electrical grid and the other one connected to the rechargeable battery. The IPT provides benefits in terms of safety and comfort, due to the absence of a plug-in operation. In this paper, an overview on the IPT applied to the battery charging of electric bicycles is provided, with some general considerations on the technical implications. Moreover, a prototype of contactless battery charging for E-bikes is proposed and described.

Battery (electricity)IPTEngineeringbusiness.industryRenewable Energy Sustainability and the Environment020209 energyElectrical engineeringwireless power transferEnergy Engineering and Power Technology02 engineering and technologyContactless battery chargingSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciElectrical gridSettore ING-INF/01 - ElettronicaSettore ING-IND/31 - Elettrotecnica0202 electrical engineering electronic engineering information engineeringWirelessMaximum power transfer theorembusiness
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An efficient wireless power transfer prototype for electrical vehicles

2017

Based on the inductive power transfer (IPT), the contactless approach allows safe and comfortable operations of battery charging for Electric Vehicles (EVs). In this paper, a contactless system particularly suitable for E-bike battery charging is proposed. A practical realization of the system has been carried out, aiming at the system evaluation in terms of working and efficiency. Through a phase shift modulation, a power regulation has been implemented. The target power level is 100 W.

Battery (electricity)Renewable Energy Sustainability and the EnvironmentComputer sciencebusiness.industry020209 energy020208 electrical & electronic engineeringElectrical engineeringVehicle-to-gridEnergy Engineering and Power TechnologyVehicle-to-grid02 engineering and technologyElectric vehicleInductive power transferRenewable energyModulationPower electronics0202 electrical engineering electronic engineering information engineeringMaximum power transfer theoremComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMSWireless power transferbusinessContactless chargingRealization (systems)2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)
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Wireless Power Transmission for house appliances: A small-scale resonant coupling prototype

2016

This paper presents a low cost prototype of wireless power transfer system based on resonant coupling. The system here proposed can be useful for house appliances battery charging systems: as a matter of fact, it consists mainly of two copper wire coils or windings, placed one in front of the other on the same axis. By exploiting the coils resonance coupling effect, electric energy can be transferred from the inductor coil to the receiver in order to charge the batteries. Low cost experimental tests demonstrated the effectiveness of the proposed wireless power transfer prototype, being it capable to reach an efficiency of about 80% and more along a distance of 30 cm.

Battery (electricity)Resonant inductive couplingEngineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciInductorbattery chargerHardware_GENERAL0202 electrical engineering electronic engineering information engineeringElectronic engineeringWirelessWireless power transferCouplingPower transmissionRenewable Energy Sustainability and the Environmentbusiness.industry020208 electrical & electronic engineeringElectrical engineering020206 networking & telecommunicationsWireless transmissionSettore ING-IND/31 - ElettrotecnicaComputer Networks and Communicationelectric house applianceHardware and ArchitectureElectromagnetic coilbusinessbattery charger; electric house appliances; Wireless transmission; Computer Networks and Communications; Hardware and Architecture; Energy Engineering and Power Technology; Renewable Energy Sustainability and the Environment2016 AEIT International Annual Conference (AEIT)
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Control subsystem design for wireless power transfer

2014

Recently, the wireless power transfer has been increasingly employed. Particularly for the electric vehicles, the wireless solution is attractive for contactless battery charging, based on the Inductive Power Transfer (IPT). In this paper, a 150W prototype for IPT-based battery charging is presented and design criteria are reported. In addition to the power stage analysis, a proper control strategy is proposed. Simulation and experimental results are shown. The proposed control method aims at regulating the load current against variations in the magnetic coupling, so that the required amount of power can be supplied despite of unexpected decreases in the coupling efficiency.

Battery (electricity)control subsystem designEngineeringControl (management)IPT-based battery chargingWireless communicationwireless power transfermagnetic couplingCoilSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaBatterieReceiverCouplingcontactless battery charginginductive power transmissioncontrol system synthesiWirelessMaximum power transfer theoremWireless power transferinductive power transferInductancepower stage analysiecondary cellbusiness.industryElectrical engineeringTransmittercoupling efficiencyInductive couplingPower (physics)power flow controlInductancebusinessload current regulation
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A Battery-Free Smart Sensor Powered with RF Energy

2018

The development of Internet of Things (IoT) infrastructure and applications is stimulating advanced and innovative ideas and solutions, some of which are pushing the limits of state-of-the-art technology. The increasing demand for Wireless Sensor Network (WSN) that must be capable of collecting and sharing data wirelessly while often positioned in places hard to reach and service, motivates engineers to look for innovative energy harvesting and wireless power transfer solutions to implement battery-free sensor nodes. Due to the pervasiveness of RF (Radio Frequency) energy, RF harvesting that can reach out-of-sight places could be a key technology to wirelessly power IoT sensor devices, whic…

Computer Networks and CommunicationsComputer scienceInternet of ThingsEnergy Engineering and Power TechnologyRadio Frequency HarvestingIndustrial and Manufacturing EngineeringArtificial IntelligenceWireless Battery ChargerWirelessRenewable EnergyWireless power transferInstrumentationSustainability and the Environmentbusiness.industryRF power amplifierTransmitterElectrical engineeringComputer Science Applications1707 Computer Vision and Pattern RecognitionInternet of Things; Litium Ion Battery; Radio Frequency Harvesting; Wireless Battery Charger; Wireless Power Transfer; Wireless Sensor Networks; Artificial Intelligence; Computer Networks and Communications; Computer Science Applications1707 Computer Vision and Pattern Recognition; Energy Engineering and Power Technology; Renewable Energy Sustainability and the Environment; Industrial and Manufacturing Engineering; InstrumentationSensor nodeLitium Ion BatteryWireless Power TransferRadio frequencyInternet of ThingWireless Sensor NetworksbusinessEnergy harvestingWireless sensor network2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)
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Energy-Efficient and Secure Resource Allocation for Multiple-Antenna NOMA with Wireless Power Transfer

2018

Non-orthogonal multiple access (NOMA) is considered as one of the promising techniques for providing high data rates in the fifth generation mobile communication. By applying successive interference cancellation schemes and superposition coding at the NOMA receiver, multiple users can be multiplexed on the same subchannel. In this paper, we investigate resource allocation algorithm design for an OFDM-based NOMA system empowered by wireless power transfer. In the considered system, users who need to transmit data can only be powered by the wireless power transfer. With the consideration of an existing eavesdropper, the objective is to obtain secure and energy efficient transmission among mul…

Computer Networks and CommunicationsOrthogonal frequency-division multiplexingComputer sciencewireless power transfer02 engineering and technologysecurityNoma0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringmedicineWirelessResource managementta113: Computer science [C05] [Engineering computing & technology]ta213Renewable Energy Sustainability and the Environmentbusiness.industry020206 networking & telecommunications020302 automobile design & engineeringnon-orthogonal multiple access (NOMA)medicine.disease: Sciences informatiques [C05] [Ingénierie informatique & technologie]power allocationSingle antenna interference cancellationChannel state informationResource allocationsubchannel allocationbusinessEfficient energy useComputer network
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Energy efficient optimisation for large‐scale multiple‐antenna system with WPT

2018

In this study, an energy-efficient optimisation scheme for a large-scale multiple-antenna system with wireless power transfer (WPT) is presented. In the considered system, the user is charged by a base station with a large number of antennas via downlink WPT and then utilises the received power to carry out uplink data transmission. Novel antenna selection, time allocation and power allocation schemes are presented to optimise the energy efficiency of the overall system. In addition, the authors also consider channel state information cannot be perfectly obtained when designing the resource allocation schemes. The non-linear fractional programming-based algorithm is utilised to address the …

Computer science020206 networking & telecommunications020302 automobile design & engineering02 engineering and technologyComputer Science ApplicationsNonlinear programmingBase station0203 mechanical engineeringChannel state informationTelecommunications link0202 electrical engineering electronic engineering information engineeringElectronic engineeringResource allocationWireless power transferElectrical and Electronic EngineeringAntenna (radio)Computer Science::Information TheoryEfficient energy useIET Communications
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Improving the efficiency of a standard compliant wireless battery charger

2012

In this paper, a wireless charger for portable electronics devices is presented. A power transmitter, also known as the magnetic pad, and a power receiver are magnetically coupled. A receiver architecture which improves the power conversion efficiency is proposed. All advantages brought by the proposed architecture are discussed and standard constraints are presented as well. The receiver is fully standard-compliant. A wireless station for mobile application is designed and tested. Simulation and experimental results are compared. As shown by experimental results, thanks to the proposed architecture the power conversion efficiency of the receiver section is really close to a unit value. Pow…

Engineeringbusiness.industryTransmitterEnergy conversion efficiencyElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaPower (physics)Battery chargerwireless energy inductive power transfer battery chargingComputer Science::Networking and Internet ArchitectureElectronic engineeringWirelessElectronicsWireless power transferFixed wirelessbusiness2012 47th International Universities Power Engineering Conference (UPEC)
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