Search results for "Induction generator"

showing 6 items of 16 documents

Design criteria of tubular linear induction motors and generators: A prototype realization and its characterization

2013

In this paper a mathematical model of tubular linear induction machines (TLIM) with hollowed induced part is recalled. Moreover the design criteria of a TLIM with hollowed iron induced part are presented as well as the technological processes to be adopted and the choice of materials to construct the various parts. The methodologies for mechanical assembling and electric wiring are considered too. A prototype with bimetallic induced part has been designed and built. Finally some experimental results on electrical and mechanical variables, when the machines are used as motors, are shown.

Linear machinesMathematical modelTubular induction motorsTubular induction generatorsCylindrical coordinateLaminationTubular induction generatorLamination.lcsh:Electronic computers. Computer scienceCylindrical coordinatesSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilcsh:QA75.5-76.95Linear machine
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Series and parallel resonant inverters for induction heating under short-circuit conditions considering parasitic components

1999

Series and parallel resonant inverters are the common structures in high power industrial generators for induction heating applications. In practical working conditions, short-circuit of the heating coil is very common, normally producing overvoltages that can damage the power transistors of the inverter if no special precautions are taken. The aim of the paper is to show the mechanism of how overvoltages are generated under short-circuit conditions of the heating coil for series and parallel inverters.

Materials scienceInduction heatingbusiness.industryHeating elementInduction generatorElectrical engineeringlaw.inventionCapacitorlawElectronic engineeringInverterPower semiconductor devicebusinessShort circuitResonant inverterProceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)
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Analytical and experimental evaluation of a WECS based on a Doubly Fed Induction Generator fed by a matrix converter

2008

In this paper the control of a grid-connected Wind Energy Conversion System (WECS), based on a sensorless vector controlled Doubly-Fed Induction Generator (DFIG) fed by a matrix converter, is presented. The matrix converter is controlled using a space vector modulation algorithm. Stability issues related to the operation of the WECS connected to the grid using a matrix converter are also discussed in this work. The influence of a synchronous rotating filter in the dynamic of the proposed WECS is analysed. A Model Reference Adaptive System (MRAS) observer for sensorless control of the proposed WECS is used in this work. Using the speed estimated by the MRAS observer the electrical torque of …

Operating pointEngineeringObserver (quantum physics)business.industryControl theoryInduction generatorTorqueControl engineeringConvertersbusinessMRASSpace vector modulationMachine control2008 IEEE International Symposium on Industrial Electronics
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The use of sea waves for generation of electrical energy: a linear tubular asynchronous electrical generator

2007

A linear tubular asynchronous generator to be used as generator driven by seawave is presented. The design criteria of a TLIM with hollowed iron induced part as well as the technological processes to be adopted and the materials utilized in the various parts are described. The methodologies for mechanical assembling and electric wiring are considered too. Finally, the prototype with bimetallic induced part that has been designed and built is presented and some experimental results on electrical and mechanical variables are shown.

Sea wavesEngineeringbusiness.industryElectric potential energyInduction generatorMechanical engineeringElectric generatorInduction generators Stator windings Iron Prototypes Frequency Permanent magnets Voltage Telecommunications AssemblySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilaw.inventionGenerator (circuit theory)Asynchronous communicationlawWind waveWave power generationbusinessOCEANS 2007
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Coupled Electric and Hydraulic Control of a PRS Turbine in a Real Transport Water Network

2019

Although many devices have recently been proposed for pressure regulation and energy harvesting in water distribution and transport networks, very few applications are still documented in the scientific literature. A new in-line Banki turbine with positive outflow pressure and a mobile regulating flap, named Power Recovery System (PRS), was installed and tested in a real water transport network for the regulation of pressure and flow rate. The PRS turbine was directly connected to a 55 kW asynchronous generator with variable rotational velocity, and coupled to an inverter. The start-up tests showed how automatic adjustment of the flap position and the runner velocity variation are able to c…

energy harvestinglcsh:Hydraulic engineeringenergy recoveryGeography Planning and Development0207 environmental engineering02 engineering and technology010501 environmental sciencesAquatic Science01 natural sciencesBiochemistryTurbineAutomotive engineeringSettore ICAR/01 - Idraulicalcsh:Water supply for domestic and industrial purposeslcsh:TC1-978pressure controlUpstream (networking)020701 environmental engineeringHydropower0105 earth and related environmental sciencesWater Science and Technologybanki turbineEnergy recoverylcsh:TD201-500Water transportbusiness.industryPressure controlcivil_engineeringInduction generatorPower (physics)Settore ICAR/09 - Tecnica Delle Costruzioniwater distribution networkEnvironmental sciencebusinessmicro-hydropower
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Performance Improvement of Grid-Integrated Doubly Fed Induction Generator under Asymmetrical and Symmetrical Faults

2023

The doubly fed induction generator (DFIG)-based wind energy conversion system (WECS) suffers from voltage and frequency fluctuations due to the stochastic nature of wind speed as well as nonlinear loads. Moreover, the high penetration of wind energy into the power grid is a challenge for its smooth operation. Hence, symmetrical faults are most intense, inflicting the stator winding to low voltage, disturbing the low-voltage ride-through (LVRT) functionality of a DFIG. The vector control strategy with proportional–integral (PI) controllers was used to control rotor-side converter (RSC) and grid-side converter (GSC) parameters. During a symmetrical fault, however, a series grid-side converter…

series grid-side converterControl and OptimizationRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power TechnologyBuilding and Constructiondoubly fed induction generator; wind energy conversion system; point of common coupling; low-voltage ride-through; fault current limiter; series grid-side converterDoubly fed induction generatorlow-voltage ride-throughSettore ING-IND/33 - Sistemi Elettrici Per L'Energiawind energy conversion systempoint of common couplingElectrical and Electronic EngineeringEngineering (miscellaneous)fault current limiterEnergy (miscellaneous)Energies; Volume 16; Issue 8; Pages: 3350
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