基于单片机的数字式交流调压系统硬件电路设计

摘要

Control theory of AC voltage regulator in digital is introduced.The Dspic30f6014a is used as the core control device, the circuit of zero-crossing detection,reference voltage and the filter of output is designed,the relay circuit of SCR is designed by 6N139 and APA3311. And the drive signal is controled by checking the signal of zero-crossing detection of current and voltage.The experimental results demonstrate the feasibility and effectiveness of the circuit.%介绍了数字式交流调压器的控制原理。使用Dspic30f6014a单片机做为核心控制器件．设计了电流、电压过零点检测电路，电压参考电路，输出滤波器。利用高速光耦6N139和继电器APA3311设计了SCR继电保护电路，并通过检测电压、电流过零点检测的信号来控制各路驱动信号。实验结果验证了该电路的可行性和有效性。