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電流電壓變換器和互感器是什么概念?

發表時間:2021-03-30 16:34【 閱讀量:-查看手機網址
掃一掃!電流電壓變換器和互感器是什么概念?掃一掃!

電流電壓變換器:又叫變流器,在很早以前就有應用了,我記得有一種油斷路器的版分閘電源就是用它來供電權的也叫速保和變流器,可以提供一定的電功率來供某些設備使用。電流互感器只能是將大電流轉換成小電流供儀表和繼電保護使用。


互感器是按比例變換電壓或電流的設備。主要是將高電壓或大電流按比例變換成標準低電壓回或答標準小電流(5A或10A,均指額定值),以便實現測量儀表、保護設備及自動控制設備的標準化、小型化。同時互感器還可用來隔開高電壓系統,以保證人身和設備的安全。按比例變換電壓或電流的設備。交流變換器是利用電磁感應原理做成的能夠變換電壓的設備。它可以用作升壓,降壓,進行隔離等作用。應用較多的是降壓變壓器。


且變換器分為交流-交流變換器、交流-直流變換器。直流變換器也可分為自激式和他控式。借助于變換器本身的正反饋信號實現開關管自持周期性開關的變換器叫做自激式變換器,洛耶爾(Royer)變換器是一種典型的推挽自激式變換器。他控式直流變換器中開關器件控制信號由專門的控制電路產生。

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