無橋式功率因數修正器的研製

Design and Implementation of Bridgeless Power Factor Corrector

方浩緯(Hao-Wei Fang)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00256

摘要

本論文研製一無橋式功率因數修正器，用來提供空調器一穩定之直流電源。此架構採用固定切換頻率及平均電流模式，主要目的為提高功率因數、提高轉換效率以及降低電流諧波。
本論文所研製無橋式功率因數修正器的規格包含：一輸入電壓為220±15%伏特(187V至253V)，輸出電壓為400伏特及最大輸出功率為1500瓦特。以類比控制晶片, ST L4981, 為基礎來設計與實現，由實驗結果顯示當輸入交流電壓在187伏特至253伏特範圍內，在滿載時功率因數皆可高達0.98以上，效率皆可達96%以上。

關鍵字

功率因數修正 ； 無橋式轉換器

並列摘要

This thesis designs and implements a bridgeless power factor corrector in order to provide a well regulated DC voltage for the air conditioner. The bridgeless PFC is with fixed switching frequency and average-current mode control to improve the power factor, increase the efficiency and lower the current harmonics.
The specifications of implemented bridgeless PFC include: input voltage = 220±15% (187 V to 253 V), output voltage = 400 V, and maximum output power = 1500 W. The analogy controller of bridgeless PFC is implemented using ST L4981. Experimental results show that the power factor reaches 0.98 under full load condition and efficiency is up to 96% as input voltage varies from 187 V to 253 V.

並列關鍵字

PFC ； Bridgeless converter

參考文獻

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