具有軟式切換之功率因數修正器的研製

Development and Implementation of Power Factor Corrector with Soft Switching

林延璋(Yen-Chang Lin)

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(2007年)

摘要

本論文主要研製一具有軟式切換之功率因數修正的交流/直流轉換器，其主架構為升壓型轉換器，主要由一個金氧半場效電晶體、電感、電容及二極體所組成，而主開關具有零電壓切換導通的特性，因此可降低開關上的切換損失。此外，本論文系統加入功因修正電路切離及輔助電路，可藉此控制轉換器之運作，進而達到降低待機功率之效能。
本文所研製之轉換器規格如下：輸入交流電壓：85~264 V，50~60 Hz；轉換器輸出：400 V / 800 W；輔助電源：5 V / 3 A和15 V；待機功率消耗：輸入功率小於0.75 W (操作於264 VAC)。
由實驗結果証明，在規格內之輸入電壓及負載條件下，主開關均能達到零電壓切換導通的特性；且當輸入交流電壓在85 ~ 264 V範圍內，輸出滿載時的輸入功率因數皆可高於99%。此外，亦可滿足待機功率消耗小於0.75 W之綠色能源規

關鍵字

交流/直流轉換器 ； 升壓型轉換器 ； 零電壓轉換 ； 功率因數修正

並列摘要

The objective of this thesis is to design and implement a soft-switching AC/DC converter with Power Factor Correction. The implemented converter is a boost topology with zero voltage transition to reduce switching loss. The converter consists of MOSFET, inductor, capacitor and diode. Moreover, this thesis includes PFC-OFF control and auxiliary circuit which will significantly reduce the standby power consumption to meet the energy efficiency specifications under standby condition.

The specifications of converter are as follows: universal input voltage: AC 85 ~ 264 V, 50~60 Hz, converter output: DC 400 V/800 W, auxiliary power: DC 5 V/3 A and 15 V, standby power (European and Japan Specifications): input power < 0.75 W @ 264 V/AC input.

As shown by the experimental results, the main switch can achieve zero-voltage transition under universal input and wide load conditions. Moreover, the power factor can be higher than 99% under full load condition and universal input voltage range. And the power consumption under standby condition is less than 0.75 W which is less than the green power requirement.

並列關鍵字

AC/DC ； Boost Converter ； ZVT ； Power Factor Correction(PFC)

參考文獻

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[3]ICE2PCS01 - Standalone Power Factor Correction