Speaker
Description
A modular GaN-FET-based fast corrector magnet power supply has been developed for the Taiwan Pho-ton Source (TPS). The high switching speed of GaN devices enables a significant increase in the output current bandwidth, which improves the response of the fast orbit feedback (FOFB) system and enhances the overall beam stability and photon beam quality of TPS. In the existing FOFB system, the operating current of the corrector magnet power supply is within ±5 A. The developed power supply provides a maximum output current of ±5 A and achieves improved current resolu-tion by optimizing the internal turn ratio of the DC current transformer (DCCT). A digital control architec-ture is implemented, integrating an ADC interface, interlock protection, and a PI controller, and is fully compatible with the TPS control system. With a switch-ing frequency of 250 kHz, the proposed power supply achieves a current control bandwidth of approximately 9 kHz, providing a significant improvement over the existing system.
| Paper status | Proceeding files received |
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