Cold test facilities are essential for the advancement of fusion energy research. The Frascati Coil Cold Test Facility (FCCTF) was envisioned to test DTT superconducting coils at cryogenic temperature and full current. The FCCTF is also useful for early optimization and validation of other key technologies such as power supply (PS), quench detection system and protection fast discharge unit (FDU). The PS is rated 44 kA with 24-pulse topology to meet the requirement for low current ripple even for a single load coil. The FDU design is based on a fully static breaking mechanism and on nonlinear varistors for energy dissipation. The FDU can be configured to comply with all possible requirements of central solenoid, toroidal field and poloidal field coils in terms of current, peak voltage, discharge time and energy dissipation. This paper presents the FCCTF design and the most relevant acceptance tests performed on its PS and FDU, showing that they are suitable for their purpose.
Tests of power supply and fast discharge unit for the Frascati Coil Cold Test Facility
Lampasi A.;Manganelli M.;Romano R.;Zito P.
2025-01-01
Abstract
Cold test facilities are essential for the advancement of fusion energy research. The Frascati Coil Cold Test Facility (FCCTF) was envisioned to test DTT superconducting coils at cryogenic temperature and full current. The FCCTF is also useful for early optimization and validation of other key technologies such as power supply (PS), quench detection system and protection fast discharge unit (FDU). The PS is rated 44 kA with 24-pulse topology to meet the requirement for low current ripple even for a single load coil. The FDU design is based on a fully static breaking mechanism and on nonlinear varistors for energy dissipation. The FDU can be configured to comply with all possible requirements of central solenoid, toroidal field and poloidal field coils in terms of current, peak voltage, discharge time and energy dissipation. This paper presents the FCCTF design and the most relevant acceptance tests performed on its PS and FDU, showing that they are suitable for their purpose.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
