晶闸管同步信号滤波移相研究

Research on filtering and phase shifting of thyristor synchronous signal

针对晶闸管同步信号波形畸变严重及频率会发生变化的特点,分析了模拟触发与数字触发的优缺点,依据滤波移相的工作原理,设计了模拟滤波移相电路,结合12脉波晶闸管整流器,提出了晶闸管同步信号滤波移相的设计方案。在ORCAD/PSPICE环境下对其进行了仿真,基于上述原理研制了额定230 V/1200 A的核电厂安全级静止式充电装置样机,仿真及实验结果表明该设计方案理论分析的正确性,实践应用具有可行性及实用性。

According to the characteristics of serious waveform distortion and frequency variation of thyristor synchronous signal,the advantages and disadvantages of analog trigger and digital trigger are analyzed.And according to the working principle of filter phase shift,the analog filter phase shift circuit is designed,based on the principle of 12 pulse thyristor rectifier.A design scheme of thyristor synchronous signal filter phase shift is presented.The simulation is carried out in ORCAD/PSPICE environment,and based on the above principle,a prototype of safety static charging device for nuclear power plant rated at 230 V/1200 A is developed.The simulation and experimental results show that the design scheme is correct in theoretical analysis and feasible in practical application.