Design a Single Stage AC to DC Converter for LED Driver With Power Factor Improvement
Suresh Kumar A1, Kalyanasundaram V2, Vidyasagar S3, George Fernandez4, Vishnuram P5, Suresh P6
1Suresh Kumar A, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
2Kalyanasundaram V, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
3Vidyasagar S, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
4George Fernandez, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
5Vishnuram, P, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
6Suresh P, Assistant Professor, Department of Electrical and Electronics Engineering, SRMIST, Kattankulathur, Chennai (Tamil Nadu), India.
Manuscript received on 18 October 2019 | Revised Manuscript received on 25 October 2019 | Manuscript Published on 02 November 2019 | PP: 3312-3318 | Volume-8 Issue-2S11 September 2019 | Retrieval Number: B15590982S1119/2019©BEIESP | DOI: 10.35940/ijrte.B1559.0982S1119
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper shows the design of a single switch LED driver circuit which is based on the operation of boost converter and flyback converter with power factor correction. In the proposed driver circuit, the boost converter is made to operate in DCM mode for achieving a high power factor and the flyback converter is used for isolating the input-output in order to provide safety. In addition to this, a snubber circuit is also designed for clamping the peak voltage of the main switch into low voltage and also to recycle the leakage inductor energy. A capacitor of low-voltage rating is made to function as the DC bus capacitor due to reason that some amount of the input power is conducted directly towards the output side; the amount of power remaining is then stored in the DC bus capacitor. In this way, the proposed LED driver circuit provides a power factor of greater value, i.e., above 0.95 PF and also a high value of power conversion efficiency, i.e., above 90%.
Keywords: AC to DC Converter, Power Factor correction (PFC), Light Emitting Diode (LED), Flyback Converter, Snubber Circuit, DC Bus Capacitor.
Scope of the Article: Low-power design