Simplified input current waveshaping technique by using inductor voltage sensing for high power factor isolated Sepic, Cuk and flyback rectifiers

2003 ◽  
Author(s):  
T. Tanitteerapan ◽  
S. Mori
Keyword(s):  
Power Factor ◽  
High Power ◽  
Input Current ◽  
Voltage Sensing ◽  
High Power Factor

High Power Factor LED Driver with Improved Inductance

2014 ◽  
Vol 610 ◽  
pp. 142-146
Author(s):  
Lun Qiang Chen ◽  
Qing Hua Chen ◽  
Ying Chun Liang ◽  
Yi Ming Lu
Keyword(s):  
Cost Effectiveness ◽  
Power Factor ◽  
High Power ◽  
Experimental Results ◽  
Input Current ◽  
Led Driver ◽  
Low Input ◽  
Interior Lighting ◽  
High Power Factor ◽  
Current Ripples

This paper proposes a novel high power factor LED driver based on SY5800A for interior-lighting applications. High power factor is achieved by using the transformer with back winding coil and the transformer with “sandwich” winding coil. In addition, the proposed driver features cost-effectiveness, high circuit efficiency, low input current ripples and a reduced components count. A sample driver is developed to supply a 15W LED interior-lighting module with a 0.99 power factor. Experimental results demonstrate the functionalities of the proposed circuit.

High Power Factor Control of Grid Input Current

2020 ◽  
pp. 27-52
Author(s):  
Gaolin Wang ◽  
Nannan Zhao ◽  
Guoqiang Zhang ◽  
Dianguo Xu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Input Current ◽  
High Power Factor ◽  
Power Factor Control
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