具有高功率因數與超低輸入電流總諧波失真的主動式LED驅動器架構研製

Design and Implementation of an Active LED Driver Scheme with High Power Factor and Extra-Low Total Harmonic Distortion of Input Current

楊仁華(Jen-Hua Yang)

指導教授 ： 涂世雄

中原大學/工學院/電機工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400073

摘要

在這篇論文中，具有高功率因數和超低輸入電流總諧波失真的AC-DC LED驅動器，基於初級端調節（ PSR ）方案被實現。
它實現了高功率因數（ PF）和超低輸入電流總諧波失真（ THDi ）的性能，並操作於邊界導通模式（ BCM） 。
我們通過使用SD6800實現設計採用改進的PSR轉換器方案的結構。如何改善PF和THDi將進行說明。
我們的SD6800應用電路的分析與設計於此處進行說明。
此外，它會顯示我們所提出的轉換器電路的時域分析在BCM的操作，以實現高PF和超低THDI。
最後，在邊界導通模式操作與連續導通模式（ CCM ） PSR轉換器的性能比較將進行討論。
一些貢獻於這裡介紹：
1 。為了獲得高功率因數大於0.95 ;
2 。為了達到小於10 ％超低輸入電流的總諧波失真;
3 。由於基於初級側調節方案，成本比二次側調節方案更便宜。
高PF和超低THDi的性能是越來越重要在LED照明市場，尤其是在使用相同電源部分的精密儀器和易受干擾的生產線。
為了獲得更好的能源利用率，避免諧波干擾，
LED驅動器具有高功率因數和超低THDi是主要的趨勢照明市場在現在和未來。

關鍵字

初級側調節 ； LED驅動器 ； 高功率因數 ； 超低輸入電流總諧波失真

並列摘要

In this thesis, a scheme with high power factor and extra-low total harmonic distortion of input current is implemented in AC-DC LED driver based on Primary Side Regulation (PSR). It achieves the performance of high Power Factor (PF) and extra-low Total Harmonic Distortion of Input current (THDi), and operates in Boundary Conduction Mode (BCM).
We adopt the structure of the improved PSR converter scheme by using SD6800 to implement the design. How to improve PF and THDi will be described. The analysis and design of our SD6800 application circuit are explained here. Furthermore, it will show time-domain analysis of our proposed converter circuit to achieve high PF and extra-low THDi by operating in BCM. Finally, the performance comparison of PSR converter operated in Boundary Conduction Mode with Continuous Conduction Mode (CCM) will be discussed.
Some contributions are presented here :
1. To get high power factor greater than 0.95;
2. To achieve extra-low total harmonic distortion of input current less than 10%;
3. Due to based on primary side regulation scheme, the cost is more cheaper than secondary side regulation scheme.
The performances of high PF and extra-low THDi are more and more important in LED lighting market, especially for some precise-instruments and susceptible production-lines in the same power supply. To get the better energy utilization and to avoid the harmonic interferences, the LED driver with high PF and extra-low THDi is the major-trends in the lighting market now and future.

並列關鍵字

extra-low THD ； LED driver ； PSR ； high PF

參考文獻

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