A DESIGN OF SWITCH MAGNET POWER SUPPLY

The paper introduces a design of power supply for switch magnet in HIRFL. The main circuit topology used Buck chopper regulator, full-bridge inverter output and power units in parallel in the power supply is introduced. The operation principle and control strategy is analyzed in this article. The power supply can be operated in DC and pulse mode, has the very good output current long-term stability, high reliability and dynamic response characteristics. Finally, some experimental data and waveforms of the power supply are shown to demonstrate the performance of the design. SUMMARY With construction of CSR and acceleration of proton at HIRFL, the existing beam handling system can not meet the requirements of nuclear physics experiments for more and more beam time. In order to match a new beam distribution system based on time is being constructed in HIRFL, a new switching magnet power supply is designed. Whether there is beam in CSR or not, the new beam distribution system can use the beams from SFC and SSC at the same time to do physics experiments at experimental terminals.