The Divertor Tokamak Test (DTT) facility introduces several novel solutions to overcome the constraints of the present fusion power supply technologies. One of the main novelties consists in using supercapacitor banks to store and recover most of the energy required to supply the coils. This can reduce the energy drawn from the grid and the dimensions of the upstream equipment. The available energy could also be employed to stabilize the electrical network and to improve its power quality. Since supercapacitor-based energy storage could require even tens of thousands of commercial cells, the identification of its optimal design combined with the related converters is critical to control costs, dimensions, and power demand. This problem has been addressed through analytical models, simulations, and a heuristic algorithm, with thermal verification performed as part of the design process. The presented procedure is used to optimize the energy storage of the power supplies for the DTT central solenoid. By leveraging the characteristics of the expected operating scenarios, the grid input power for a demand of 150 MW is limited to 2.4 MW for all CS power supplies.
Supercapacitor bank design for the DTT Central Solenoid power supplies
Lampasi A.;
2025-01-01
Abstract
The Divertor Tokamak Test (DTT) facility introduces several novel solutions to overcome the constraints of the present fusion power supply technologies. One of the main novelties consists in using supercapacitor banks to store and recover most of the energy required to supply the coils. This can reduce the energy drawn from the grid and the dimensions of the upstream equipment. The available energy could also be employed to stabilize the electrical network and to improve its power quality. Since supercapacitor-based energy storage could require even tens of thousands of commercial cells, the identification of its optimal design combined with the related converters is critical to control costs, dimensions, and power demand. This problem has been addressed through analytical models, simulations, and a heuristic algorithm, with thermal verification performed as part of the design process. The presented procedure is used to optimize the energy storage of the power supplies for the DTT central solenoid. By leveraging the characteristics of the expected operating scenarios, the grid input power for a demand of 150 MW is limited to 2.4 MW for all CS power supplies.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
