根據同步基準正弦電路在動態電壓恢復器（Dynamic Voltage Restorer，DVR）中的應用特點，確定了其實現的原理框圖。基于Proteus的產品設計方法和流程，對框圖中的模擬、數字電路部分通過軟件仿真驗證了理論計算結果。選擇I2C總線接口的AD5241，在可變增益放大環節中，采用單片機編程的方法實現了“把模擬器件放到總線上”的全新設計理念。給出了當輸入信號中有諧波含量、電壓波動時的輸入、輸出和反饋電壓仿真結果波形，波形顯示該電路達到了設計要求。

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