A Fast-Response and High-Stability Power Supply for a Corrector Magnet in HALS

The beam quality of the new synchrotron radiation light source Hefei Advanced Light Source (HALS) requires a fast-responding, high-stability, magnet power supply (MPS). Inspired by the commercial electronic load and audio amplifier circuits, we designed a bipolar power supply that utilizes the linear amplification characteristics of the metal–oxide–semiconductor field-effect transistor (MOSFET) to improve the balance between the response speed and the resolution of the switching power supply. The frequency response of the designed power supply can reach 10 kHz and the long-term stability can reach 5 ppm. In addition, the ±10-A rated output power supply can resolve current changes of 0.1 mA. This article describes in detail the topology of the power supply, the feedback control strategy, and the design of the digital control card. Finally, the test platform construction, performance test methods, and final experimental results of the prototype are presented.

[1]  Z. Bai,et al.  DESIGN OF THE SECOND VERSION OF THE HALS STORAGE RING LATTICE , 2018 .

[2]  C.-Y. Liu,et al.  Rigorous mathematical modelling for a Fast Corrector Power Supply in TPS , 2017 .

[4]  Ju Wang,et al.  Mathematical Modeling and Analysis of a Wide Bandwidth Bipolar Power Supply for the Fast Correctors in the APS Upgrade Controller , 2015 .

[5]  Kuo-Bin Liu,et al.  Design of Digital Fast Corrector Power Supply for TPS Storage Ring , 2016 .

[6]  J. Y. Huang,et al.  HIGH CURRENT UNIPOLAR MAGNET POWER SUPPLY SYSTEM AT THE PLS-II STORAGE RING* , 2012 .

[7]  Hyunchul Park,et al.  Development of high-stability magnet power supply , 2016 .

[8]  H. Someya,et al.  Improvement of the Shift Bump Magnetic Field for a Closed Bump Orbit of the 3-GeV RCS in J-PARC , 2008, IEEE Transactions on Applied Superconductivity.

[9]  Ralph Kennel,et al.  High-Performance Control Strategies for Electrical Drives: An Experimental Assessment , 2012, IEEE Transactions on Industrial Electronics.

[10]  Stephen Duncan,et al.  Fast orbit beam stabilisation for a synchrotron , 2011, 2011 IEEE International Conference on Control Applications (CCA).

[12]  Bong-Hwan Kwon,et al.  Design of a highly stable electromagnet power supply , 1992, IEEE Trans. Ind. Electron..

[13]  Fengli Long.  Status and Trends in Magnet Power Converter Technology for Accelerators , 2014 .

[14]  A stable pulsed power supply for multi-beamline XFEL operations. , 2018, The Review of scientific instruments.

[15]  Shashi B. Dewan,et al.  A low ripple power supply for high current magnet load , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[16]  F. Jenni,et al.  Digital control for highest precision accelerator power supplies , 2001, PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268).

[17]  K. Liu,et al.  Reliability assessment and improvement for a fast corrector power supply in TPS , 2018, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.