Design of Magnetic Compression Plasma Fusion Power Supply Based on CAN Bus

Magnetically compressed plasma fusion (MPF) is believed to increase the temperature gradient and fusion power density, bootstrap current ratio, and induce high confinement modes with long confinement time. The auxiliary power supply system adopts a high-frequency soft switching modular power supply parallel structure. This paper presents the overall structure of the power supply control system, studies the soft switching technology, parallel current sharing technology and discusses them respectively. Aiming at the current sharing problem of parallel connection between power supply modules, an average current method based on CAN bus communication technology is designed, which realizes the current sharing of each module. The PI closed-loop control of the power system is adjusted and verified by simulation.