中国散裂中子源/快循环同步加速器电源系统数字化控制方案

在中国散裂中子源工程中, 需要设计1台1.6GeV快循环同步质子加速器. 加速器的磁铁电源系统驱动9套怀特电路. 这9套电源的输出都是带直流偏置的交流电流源. 在每个重复加速周期内, 电流(磁场)必须保证相位和幅值精度. 数字控制技术的可靠性、温度漂移抑制、高集成性等等使得它在越来越广泛地应用于控制电路的设计中. 为了达到中国散裂中子源电源系统苛刻的指标, 本文提出了一种数字化控制方案.

A Digital Control Scheme of Power Supply System for RCS/CSNS

A 1.6GeV proton rapid cycle synchrotron (RCS) was designed in the Chinese Spallation Neutron Source (CSNS) Project.The magnet power supply system of the synchrotron drives nine sets of independent 25Hz White Circuit.The output currents of the nine sets of magnet power supply are the DC-biased AC source. The currents (magnetic fields) must meet the requirements of the phase and amplitude accuracy during the accelerator repetition cycle.Because of the advantages of the digital control technique such as reliability, temperature drift rejection,and high integration and so on,it has been adopted more and more widely in the equipment design.To achieve the rigorous goals such as stability and THD(Total Harmonic Distortion)in the RCS/CSNS magnet power supply system,a digital control scheme will be implemented which will be presented in this paper.