title: Performance improvement of a measurement station for superconducting cable test.
abstract: A fully digital system, improving measurements flexibility, integrator drift, and current control of superconducting transformers for cable test, is proposed. The system is based on a high-performance integration of Rogowski coil signal and a flexible direct control of the current into the secondary windings. This allows state-of-the-art performance to be overcome by means of out-of-the-shelf components: on a full-scale of 32 kA, current measurement resolution of 1 A, stability below 0.25 A min(-1), and controller ripple less than ±50 ppm. The system effectiveness has been demonstrated experimentally on the superconducting transformer of the Facility for the Research of Superconducting Cables at the European Organization for Nuclear Research (CERN).
authors.affiliation: Engineering Department, University of Sannio, 82100 Benevento, Italy.
authors.forename: Pasquale
authors.initials: P
authors.lastname: Arpaia
authors.forename: Luca
authors.initials: L
authors.lastname: Bottura
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Montenero
authors.forename: Sandrine
authors.initials: S
authors.lastname: Le Naour