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Title: 升降壓截波電路之製作
Authors: 楊育民
Contributors: 電機工程系
Keywords: 升壓變換器
電壓
負載
Date: 2020-06
Issue Date: 2020-12-18T05:48:45Z
Abstract: 降壓-升壓變換器(buck–boost converter)也稱為buck–boost轉換器,是一種直流-直流轉換器,其輸出電壓大小可以大於輸入電壓,也可以小於輸入電壓。降壓-升壓變換器和返馳式變換器等效,但用單一的電感器來取代變壓器。
降壓-升壓變換器在原理上類似降壓變換器及升壓變換器,都是利用電感器會避免電流快速變化的特性。一開始時沒有任何元件有帶電,開關開路,流經電感器的電流為0。當開關初次關閉時,二極體讓電流無法從電源流到右側的負載,因此電流都會經過電感器,不過因為通過電感器會避免電流快速變化,因此一開始通過電感器的電流會比較小,之後才緩緩的上昇,此時,電感器也以磁場的方式儲存能量。
Appears in Collections:[Department of Electrical Engineering & Graduate Institute] Monograph

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