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http://dx.doi.org/10.5762/KAIS.2019.20.3.491

Comparison of Main Circuit Type Characteristics of LED Driver for Output Ripple Reduction  

Park, Dae-Su (Korea University of Technology and Education, School of Electrical, Electrics and Communication Engineering)
Kim, Tae-Kyung (Korea University of Technology and Education, School of Electrical, Electrics and Communication Engineering)
Oh, Sung-Chul (Korea University of Technology and Education, School of Electrical, Electrics and Communication Engineering)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.3, 2019 , pp. 491-499 More about this Journal
Abstract
Recently, there has been increasing demand for power quality in power supply devices. The IEC 61000-3-2 standard requires that the AC / DC power supply for lighting meet the specifications for the power factor (PF) and total waveform distortion (THD). In addition, advanced countries in Europe are regulating the ripple rate as 15 ~ 30% for the flicker phenomenon caused by the change in the amount of foot energy due to the change in current of the output terminal. Therefore, domestic standards and regulations are being updated. This study adopted the Flyback converter to satisfy the PFC standard, and has the circuit first and second insulation function. To reduce the low frequency ripple of the LED current, Flyback, Coupled Inductor, LC parallel resonance filter, LLC resonance filter, and Cuk were simulated by PSIM to mimic each LED driving circuit. A coupled LC resonant circuit with a coupled inductor on the primary side and LC resonance on the secondary side was also proposed for output side ripple reduction.
Keywords
LED; LC Resonant; Coupled Inductor; LLC Resonant; PFC;
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  • Reference
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