Digital Controller Implementation of a Corrector Power Converter for TPS Fast Corrector Magnet
Keywords:
Synchrotron, fast corrector, wide bandwidth, embedded controller, power supply.Abstract
In the beginning of 2016, TPS (Taiwan Photon
Source) has started its light source services to user. TPS, a 3rd generation synchrotron light source, is newly constructed to provide high brightness beam source for a variety of scientific researches. To maintain the electronic beam orbit stability, fast orbit feedback system (FOFB) is essential to suppress the unwanted disturbances from difference noise sources. The
FOFB system is composed of fast corrector magnets, wide bandwidth power supplies, beam position data and orbit compensation algorithm to serve the noise suppression purpose. It is shown that FOFB system is effective in stabilizing the beam position This paper describes a new type full-digital corrector power supply to serve as the driving source to feed the fast corrector magnet in the FOFB system, where both wide bandwidth and fast transient response are needed. The new power supply employs the same power stage of the analog fast corrector power supply, the current output regulation is redesigned and implemented in NI-sbRIO9606, which embeds a real-time processor and a user-reconfigurable FPGA (Field Programmable Gate Array) on a single module from National Instruments. The simulation and prototype result indicates that
the new power supply can deliver operational bandwidth at about 10 KHz and faster transient behavior compared to the along version of the fast corrector power supply.
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