Search results for "Fast Discharge"

showing 3 items of 3 documents

Transient Electrical Behaviour of the TF Superconducting Coils of Divertor Tokamak Test Facility During a Fast Discharge

2022

The paper is focused on the electromagnetic analysis of the Toroidal Field (TF) superconducting coils of the Divertor Tokamak Test facility (DTT) when electrical transients occur in the TF coils system: for example, during the operations of the Fast Discharge Units (FDUs) and considering also, the simultaneous occurrence of a fault condition. During the FDU intervention, a transient voltage excitation lasting few microseconds occurs at the TF coil terminals and it electrically stresses the insulations of TF coils itsef. To investigate the voltage distribution across, inside and between different Double Pancakes (DPs) of each TF coil, a lumped parameters circuital model has been developed an…

Fast DischargeCircuit faultsFDUCondensed Matter PhysicsGround fault conditionsCentral Solenoid Model Coil (CSMC)Electronic Optical and Magnetic MaterialsSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaTransient analysisSettore ING-IND/31 - ElettrotecnicaInsulationIntegrated circuit modelingDischarges (electric)Toroidal Field Model Coil (TFMC)Superconducting magnetsElectrical and Electronic EngineeringVoltage distributionInductanceDTTElectromagnetic modelling
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Design and Simulation of Fast Discharge Units (FDUs) for Toroidal Field Coils of Divertor Tokamak Test (DTT)

2023

Questa tesi riassume il lavoro svolto durante il triennio di dottorato nel periodo compreso tra il 2019 e il 2022. Come è ben noto nella comunità scientifica, l'ambiziosissimo progetto di fusione nucleare ha richiesto e richiede notevoli risorse ed investimenti; La tabella di marcia per la generazione di energia da fusione nucleare su larga scala comprende missioni impegnative. I progetti ITER e DEMO, essendo progetti internazionali, richiedono la collaborazione (sia dal punto di vista economico che tecnico) di diversi Paesi a livello europeo ed extraeuropeo; per questo motivo i vari aspetti tecnologici, che verranno poi implementati e applicati nei reattori a fusione finali, vengono prima …

Settore ING-IND/31 - ElettrotecnicaFast Discharge UnitQuench ProtectionNuclear fusionSuperconducting magnetDTT
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Transient DC-Arc Voltage Model in the Hybrid Switch of the DTT Fast Discharge Unit

2021

The focus of this work is the transient modelling of the DC-arc voltage on a Hybrid Switch (a mechanical switch in parallel with a static switch) of a key protection component called Fast Discharge Unit (FDU) in the Divertor Tokamak Test (DTT). The DTT facility is an experimental tokamak in advanced design and realization phase, which will be built in the ENEA Research Centre in Frascati (Italy). The FDU allows the safe discharge of the Toroidal Field (TF) superconducting magnets when a quench is detected or a failure occurs in the power supply or in the cryogenic system. In this work, the arc conductance of the mechanical By-Pass Switch (BPS) of the Hybrid Switch is modelled using the well…

SuperconductivityTokamakMaterials scienceNuclear engineeringDivertorPhase (waves)Quench protectionSuperconducting magnetHybrid circuit breakerArc voltagelaw.inventionPower (physics)Arc (geometry)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaFast discharge unitlawTransient (oscillation)Voltage
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