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中国散裂中子源(CSNS)快循环同步加速器(RCS)是一台高束流功率质子加速器,RCS注入系统是将直线加速器预加速的负氢离子束流通过剥离的方式注入到RCS环中,注入系统采用凸轨方案和相空间涂抹技术并要求涂抹凸轨磁铁脉冲电源输出脉冲电流的下降沿能够被程序控制,电源采用IGBT功率放大的方式产生脉冲电流,用程序控制电源的给定波形,通过电源反馈控制系统,使电源的输出波形跟随电源的给定波形,达到控制电源输出脉冲电流下降沿的目的.电源输出脉冲电流的跟踪误差是涂抹凸轨磁铁脉冲电源的重要指标,为了满足跟踪误差小于2%的指标,要求IGBT拓扑频率大于400kHz.IGBT拓扑采用IGBT H桥串并联错相工作的方式达到分压、分流和提高频率的作用.高功率、高频率、快速的响应时间和最佳的反馈控制策略是涂抹凸轨磁铁脉冲电源具有良好性能的关键.
China Spallation Neutron Source (CSNS) The Fast Cycle Synchrotron (RCS) is a high beam power proton accelerator. The RCS injection system injects the pre-accelerated negative hydrogen ion beam from the linear accelerator into the RCS ring , The injection system adopts the convex rail scheme and the phase space smear technique and requires that the falling edge of the output pulse current of the pulsed magnetic pulse power supply of the convex rail be able to be controlled by the program and the power supply adopts the IGBT power amplification mode to generate the pulse current and control the given waveform , Through the power feedback control system, the power output waveform to follow the power of the given waveform, to control the power output pulse current falling edge of the purpose.Power supply pulse current tracking error is applied to the pulse of the magnetic pulse of the important indicators, in order to meet Tracking error of less than 2% of the indicators require IGBT topology frequency is greater than 400kHz.IGBT topology using IGBT H bridge series parallel staggered work to achieve the partial pressure, shunt and improve the frequency of the role of high power, high frequency, fast response time and The best feedback control strategy is the key to good performance with the Magnetron Magnet Pulse Power Supply.