零電壓切換半橋串聯諧振轉換器

A ZERO VOLTAGE SWITCHING HALF BRIDGE SERIES RESONANT CONVERTER

黃豐裕(Feng-Yu Huang)

指導教授 ： 蔡明傑

大同大學/電機資訊學院/電機工程學系所/碩士(2006年)

摘要

本論文提出一種結合功率因數校正電路及軟切換半橋LLC串聯諧振轉換器，此轉換器所有的開關元件工作在零電壓切換且次級的整流二極體均工作在零電流切換，此架構結構簡單，磁性元件只需一顆即可完成。
此論文呈現一零電壓半橋諧振轉換器。它的優點是高效率，電磁干擾低，低交換損失和體積小及低電壓電流應力。為了要達到開關零電壓切換，前端使用功率因數校正提供一穩定的電壓給全諧振轉換器，同時也能降低諧波電流。
此實驗電路為90V ~ 264Vac輸入，24V/10A輸出，此轉換器在滿載狀況下可達到95.2%的效率。

關鍵字

待機消耗 ； 零電壓轉換 ； 諧振 ； 功率因數校正

並列摘要

This thesis presents a soft switching half bridge LLC series resonant converter combine the PFC circuit. In resonant converter all switches working on the ZVS and the secondary diodes are working on the ZCS. This topology is very simple just only use one magnetic component to achieve the ZVS.
This thesis presents a zero-voltage-switched (ZVS) of resonant half-bridge converter. Its advantages are high efficiency, low EMI, low switching loss, compact size, low voltage stress, etc. To achieves the ZVS of power switches, in front-end used PFC to provide a fixed voltage for the resonant converter. At the same time the PFC also reduces the harmonic current.
An experimental prototype of 90~264Vac input, 24V/10A output, the resonant converter full load efficient reaches 95.2%.

並列關鍵字

Energy Saving ； ZVS ； Resonant ； PFC

參考文獻

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[4] Y. Gu, L. Hang, H. Chen, Z. Lu, Z. Qian and J. Li, “A simple structure of LLC resonant DC-DC converter for multi-output applications,” Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE, Volume 3, pp. 1485–1490, Mar. 2005.

component for a 1 MHz 1 kW half-bridge LLC resonant converter,” Industry

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