基于NI CompactRIO的晶闸管电源同步信号处理系统

HL-2A装置使用脉冲发电机组为装置极向场晶闸管电源供电以驱动线圈负载，晶闸管电源采用相控控制，因此同步信号的质量将直接影响电源的控制精度。HL-2A装置晶闸管电源同步信号取自同步变压器，脉冲发电机组带整流负载的供电方式使得同步信号不仅存在严重的波形畸变，同时还存在同步信号频率在大范围快速变化的特点。根据HL-2A装置晶闸管电源同步信号的特点，采用逐点巴特沃斯滤波器消除波形畸变，并通过实时频率计算和相位重建获得高质量同步信号。基于NI CompactRIO平台设计了晶闸管相控电源同步信号实时处理系统，实验结果表明该系统可有效解决同步信号畸变严重和频率宽范围快速变化的问题。

Synchronization signal processing system of thyristor power supply based on NI CompactRIO

HL-2A device makes use of a pulse generator set to provide energy to the thyristor power supply, which is phase-controlled, thus the quality of the synchronization signal will directly affect the control accuracy of the power supply. The synchronization signal of the thyristor power supply in HL-2A device is taken from the synchronous transformer. The power supply mode of the pulse generator unit with rectifier load makes the synchronization signal not only have serious distortion, but also have the characteristics of a wide frequency range. Considering the characteristics of the synchronization signal, point-by-point Butterworth filter is implemented to eliminate waveform distortion, and then high quality synchronization signal is obtained by real-time calculation of frequency and phase reconstruction. Based on NI CompactRIO device, a real-time processing system for synchronization signal of thyristor phase-controlled power supply is designed. The experimental results show that the system can effectively solve the problem of serious distortion and wide-range frequency change of synchronization signal.