單級高功因LED燈驅動器

Design and Implementation of Single-Stage High Power Factor LED Lamp Driver

鍾世彥(Shih-Yen Chyng)

指導教授 ： 邱煌仁

中原大學/工學院/電機工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600250

摘要

由於材料與製程技術的快速發展，高亮度發光二極體(LED)已經逐漸普遍應用於各種照明場合。LED燈具有包括長達10,000小時以上的操作壽命、寬廣的工作溫度範圍以及僅需簡單的驅動電路等優點。LED燈可工作於低電壓，無需螢光燈所必要的高壓啟動電路設計。本論文提出一種具有改良型單級返馳式電路架構的高效能LED燈驅動器，該單級轉換器係由電荷泵功率因數修正單元，整合返馳式直流/直流單元所構成，回授迴路被設計以調整LED電流。ㄧ部應用定電流控制之電路，可達到高效率、高功率因數的雛型電路可被實現及測試。

關鍵字

功率因數 ； 定電流控制 ； 單級返馳式 ； LED燈驅動器

並列摘要

Rapid advances in material and manufacturing technologies have had significant developments in high-luminance LEDs for lighting applications. LED lamps have numerous advantages, such as up to 100,000 hours of operation life, a wide range of operation temperature, and the simplicity of a driver circuit. LED lamps work with low and safe voltage, and no ignition circuit require like fluorescent lamps. In this thesis, a high performance LED lamp driver with an improved single-stage Flyback configuration is proposed. The single-stage converter is a charge-pump PFC cell integrated with a Flyback DC/DC cell. A feedback loop is designed to regulate the LED current. A laboratory prototype, which is high efficiency and high power factor, has been built and tested. Constant current control is designed in this circuit.

並列關鍵字

Single-Stage Flyback ； LED Lamp Driver ； Power Factor ； Constant Current Control

參考文獻

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