基于CPLD的三相全桥数字触发技术

The digital trigger technology of three-phase bridge based on CPLD

目的研究三相晶闸管整流电路触发脉冲的数字产生及优化技术。方法 CPLD数字相位跟踪及脉冲计数移相法。结果实现了对输入电压的相序自适应及触发角可根据外部给定在整流相位中进行全相位调节。结论实验证明数字触发电路生成的双窄触发脉冲具有较高的精确度、对称度及可靠性。

Aim To study the digital generation and optimization technology of three-phase thyristor rectifier circuit trigger pulse.Methods CPLD digital phase tracking and pulse-counting phase shifting.Results Phase self-adjusting is realized for input voltage and triggering pulse can be adjustmented in all phase according to the external setting.Conclusion It was proved by experiments that the double narrow trigger pulses generated by digital trigger circuit have high precision,symmetry and reliability.