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當前位置:首頁 > 新聞中心 > 勵磁調節器原理

勵磁調節器原理

2018-09-29

 

今天小編給大家介紹一下勵磁調節器的原理:

通過對發電機端電壓進行檢測,或者還要進行信號的隔離,這是防止干擾的,然后和AVR內部設定的電壓值進行對比,對這個偏差量然后進行放大,用他去觸發勵磁的輸出,從而控制了勵磁的輸出,這個勵磁的變化從而又彌補了發電機電壓的變化,使其盡快回歸正常的電壓水平,通過這樣一個原理使得發電機的電壓持續穩定在一個恒定的水平。
    發電機的勵磁輸出一般是可控硅輸出的,有的是全波整流的,有的是半波整流的,當然全波的性能好一些。這些可控硅的觸發信號就來自于實際值和設定值的偏差量。TDL-5勵磁柜.jpg
   比如當發電機的實際電壓偏離了正常電壓,高了一點的時候,這個電壓和設定電壓的偏差,就被放大,然后觸發可控硅,使得AVR的勵磁輸出減小一些,這樣電壓就會下降一點又回歸正常值。

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