Speaker
Description
The 42-MW highly stabilized power supply, developed by the High Magnetic Field Laboratory, Chinese Academy of Sciences (CHMFL), successfully energized a newly designed water-cooled resistive magnet, achieving a world-record magnetic field of 42.02 T in September 2024. This power supply system is composed of a newly developed 14-MW power supply in parallel with a pre-existing 28-MW unit. The 14-MW power supply integrates high-voltage Static Var Generator (SVG) technology, which replaces the conventional power factor correction method used fixed-capacitor banks, enabling dynamic reactive power compensation and stabilization of the grid voltage. Additionally, a novel series-connected active filter has been developed to further reduce current ripple. The active filter features lower losses, compact size, and easier control. This paper provides a detailed description of the design, testing processes, and operational data analysis of the 42-MW power supply system under the 42.02-T resistive magnet. Furthermore, future optimization strategies for the power supply system are discussed.
