THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME POWER LIGHT APPLICATION Thesis for Master of Science Department of Electrical Engineering Tatung University AUTHOR（Jen-Fu Chung）

THE IMPLEMENTATION OF SINGLE-STAGE PFC SCHEME POWER LIGHT APPLICATION Thesis for Master of Science Department of Electrical Engineering Tatung University

AUTHOR（Jen-Fu Chung）

ABSTRACT This thesis mainly presents an implementation of a single-stage Power Factor Correction (PFC) scheme for the low power LED light application. As mater of fact, the circuit key idea is from the definition of power factor, that is the input current must follow the voltage all the time. The PF value is predicted and set properly by the proposed design equations and circuit architecture. Detail operation principles, algorithms, and experimental results are offered, and the experimental results based on 24V 700mA LED down light prototype schematic are also provided. The final PF value reaches as high as 0.980 which already satisfied the "ENERGY STAR": PF>0.9 for commercial application. In addition, the current harmonics were passed in IEC61000-3-2, too.

Index Terms: Boost Converter, Flyback converter, Single stage PFC.

LINK: http://www.mediafire.com/file/t0xzyokobsvlqi4/THE_IMPLEMENTATION_OF_SINGLE-STAGE_PFC_SCHEME_FOR_LED.pdf/file