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I. CELİK1,* , O. FARUK FARSAKOGLU1, M. NALBANTOĞLU1
Today, light emitting diode (LED) lighting systems are often used in the lighting applications because of their durability, long life and high efficiency. Various important studies have been conducted on LED driver circuits in recent years. Different power converter circuits are often used in LED driver circuits depending on the developments in the power electronics. These circuits both decrease input power factor and lead to high harmonic injection to the circuit. LED driver circuits must conform to the standardization in terms of power factor and harmonics. These standards are to be provided by active power factor correction structures with AC-DC converter. This study mainly classifies single phase power factor correction (PFC) techniques. Based on this classification, passive filters and LED driver circuits with power factor correction were analyzed. It was observed that power factor values to be obtained from passive filter circuits were between 0.448 and 0.93. In addition, power factor correction in the flyback structure with AC-DC converter based was also analyzed. In this respect, a single-phase PFC flyback converter was also designed. This structure was put through discontinuous conduction mode (DCM) simulation and application. Different LED driver power factor (PF), total harmonic distortion (THD) and efficiency rates were observed at different voltage levels. The conformity of LED driver to the international harmonic standards were analyzed using the application results. The results of the analysis suggest that flyback LED driver was more efficient, led to less THD and higher PF compared to passive filter circuits..
LED lighting, Flyback converter, Power factor correction, Power factor, Total harmonic distortion.
I. CELİK, O. FARUK FARSAKOGLU, M. NALBANTOĞLU, The design and analysis of LED drivers with power factor correction in lighting applications, Optoelectronics and Advanced Materials - Rapid Communications, 11, 3-4, March-April 2017, pp.251-261 (2017).
Submitted at: June 10, 2016
Accepted at: April 6, 2017
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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