动态电压恢复器同步基准正弦电路设计

根据同步基准正弦电路在动态电压恢复器（Dynamic Voltage Restorer，DVR）中的应用特点，确定了其实现的原理框图。基于Proteus的产品设计方法和流程，对框图中的模拟、数字电路部分通过软件仿真验证了理论计算结果。选择I2C总线接口的AD5241，在可变增益放大环节中，采用单片机编程的方法实现了“把模拟器件放到总线上”的全新设计理念。给出了当输入信号中有谐波含量、电压波动时的输入、输出和反馈电压仿真结果波形，波形显示该电路达到了设计要求。

Abstract:

 According to the characteristic of synchronous reference sinusoidal circuit of Dynamic Voltage Restorer （DVR），its principle scheme was confirmed. Based on the method and program of Proteus product design，the theory calculation results were validated about analog and digital circuit of scheme by software simulating. Design idea that “putting analog devices into bus” was implemented in variable gain amplifier adopting I2C bus interface AD5241 by MCU programming. Finally，simulating curves of input，output and feedback voltage waveforms with harmonic and fluctuation were provided. It proves that the circuit is up to the design requirements