根據(jù)同步基準(zhǔn)正弦電路在動態(tài)電壓恢復(fù)器（Dynamic Voltage Restorer，DVR）中的應(yīng)用特點(diǎn)，確定了其實(shí)現(xiàn)的原理框圖。基于Proteus的產(chǎn)品設(shè)計(jì)方法和流程，對框圖中的模擬、數(shù)字電路部分通過軟件仿真驗(yàn)證了理論計(jì)算結(jié)果。選擇I2C總線接口的AD5241，在可變增益放大環(huán)節(jié)中，采用單片機(jī)編程的方法實(shí)現(xiàn)了“把模擬器件放到總線上”的全新設(shè)計(jì)理念。給出了當(dāng)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(jié)果波形，波形顯示該電路達(dá)到了設(shè)計(jì)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