昇壓式主動濾波器之研製

Implementation of Active Filter Circuit with Boost Converter

張世儒(Shih-ju Chang)

指導教授 ： 黃啟貞

崑山科技大學/工程學院/電機工程研究所/碩士(2009年)

https://doi.org/10.6828/KSU.2009.00038

摘要

本論文主要是研究主動式功因修正電路，在功率級昇壓式轉換器方面，輸入的電感電流為不連續且固定頻率、固定工作週期的昇壓式轉換器。本論文的昇壓式轉換器輸入電感電流為不連續且具有電壓隨耦器的功能。因傳統的被動式功率因數修正電路易造成產品大型化，此功率因數修正也不盡理想。故本論文主要以實現主動式功率因數修正電路，並與被動式功率因數修正比較，藉以改善被動式功率因數修正之缺點。本論文設計一組負載在120W，輸出400V，其功率因數可達0.95以上，效率達95%以上。最後，藉由電路實作與模擬得知，不需設計複雜的內迴路控制電路、乘法器及電流感測器，除可節省元件成本，亦可達到高功因。

關鍵字

功率因數修正 ； 昇壓式轉換器 ； 不連續

並列摘要

A fixed frequency, fixed duty cycle boost converter with discontinuous input inductor current for active power factor correction(PFC) operation is studied in this thesis. Because of the traditional passive power factor correction is easy to create the product large scale, also passive power factor correction is not good. This thesis is to implement the active power factor correction circuit, which compared with the passive power factor correction, to improve the shortcoming of the passive power factor correction. A load is designed in 120W, output 400V to the circuit proposed in this thesis, which the power factor up to above 0.95, the efficiency up to above 95%. Finally, through simulation results and experimental responses, the circuit proposed is never to need the complicated inner-loop controller, the multiplier and the current sensor neither. It can not only save the cost of element, but also achieve high power factor.

並列關鍵字

PFC ； Boost Converter ； Discontinuous

參考文獻

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