Self-oscillating series-resonant led driver applied to reduce low-frequency current ripple transmission

This paper presents the analysis and design of an LED driver based on the series-resonant converter (SRC) and on the self-oscillating command circuit (SOCC). The use of SRC provides a reduction of the low frequency (LF) ripple in the LEDs' current, originated by the voltage ripple in the output of the power factor correction (PFC) stage (bus voltage ripple). The attenuation of the ripple transmission from the bus voltage to the LEDs' current achieves some desired goals: (1) reduction of the bulk capacitance used at the output of the PFC stage, enabling the employment of long-life film capacitors, and (2) increasing of the efficiency of the LED driver because of the low switching losses of the series-resonant converter. The SOCC stamps on the LED driver the low-cost, simplicity, and robustness features. In order to avoid any mismatch between the SRC LF current ripple reduction design guidelines and the SOCC design, a design methodology is presented. Experimental results from a self-oscillating series resonant converter to supply a 10 Watts LED lamp are presented, validating the feasibility of the developed methodology and the proposed analysis.

[1]  Fanghua Zhang,et al.  High Power Factor AC–DC LED Driver With Film Capacitors , 2013 .

[2]  Fanghua Zhang,et al.  High Power Factor AC–DC LED Driver With Film Capacitors , 2013, IEEE Transactions on Power Electronics.

[3]  G. Vazquez,et al.  Design of self-oscillating electronic ballast for power LEDs , 2014, 2014 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC).

[4]  Mircea Bojan,et al.  Resonant LED driver with inherent constant current and power factor correction , 2014 .

[5]  M. F. da Silva,et al.  Comparative Analysis of Self-Oscillating Electronic Ballast Dimming Methods With Power Factor Correction for Fluorescent Lamps , 2015, IEEE Transactions on Industry Applications.

[6]  Xinbo Ruan,et al.  Means of Eliminating Electrolytic Capacitor in AC/DC Power Supplies for LED Lightings , 2009, IEEE Transactions on Power Electronics.

[7]  J. Marcos Alonso,et al.  Capacitance Reduction With An Optimized Converter Connection Applied to LED Drivers , 2015, IEEE Transactions on Industrial Electronics.

[8]  Yu-Sheng Chen,et al.  Study and implementation of high frequency pulse LED driver with self-oscillating circuit , 2011, 2011 IEEE International Symposium of Circuits and Systems (ISCAS).

[9]  R. Burgos,et al.  Study of Energy Storage Capacitor Reduction for Single Phase PWM Rectifier , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[10]  E. Mineiro Sa,et al.  Low cost self-oscillating ZVS-CV driver for power LEDs , 2008, 2008 IEEE Power Electronics Specialists Conference.

[11]  José Marcos Alonso Alvarez,et al.  Comparison of self-oscillating electronic ballasts dimming methods with power factor correction for fluorescent lamps , 2013, 2013 IEEE Industry Applications Society Annual Meeting.

[12]  R.N. do Prado,et al.  A Design Methodology for a Self-Oscillating Electronic Ballast , 2007, IEEE Transactions on Industry Applications.

[13]  S. Hui,et al.  Current source ballast for high power lighting emitting diodes without electrolytic capacitor , 2008, 2008 34th Annual Conference of IEEE Industrial Electronics.

[14]  Marco A. Dalla Costa,et al.  Reducing storage capacitance in off-line LED power supplies by using integrated converters , 2012, 2012 IEEE Industry Applications Society Annual Meeting.

[15]  M. F. da Silva,et al.  Single-stage SEPIC-Buck converter for LED lighting with reduced storage capacitor , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[16]  M. A. Dalla Costa,et al.  Application of series resonant converters to reduce ripple transmission to LED arrays in offline drivers , 2013 .

[17]  Chien-Hsuan Chang,et al.  A novel single-stage high-power-factor LED driver for street-lighting applications , 2013, 2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS).