A Universal-Input Single-Stage High-Power-Factor Power Supply for HB-LEDs Based on Integrated Buck-Flyback Converter

Due to the high rise in luminous efficiency that HB-LEDs have experienced in the last recent years, many new applications have been researched. In this paper, a streetlight LED application will be covered, using the Integrated Buck-Flyback Converter developed in previous works, which performs power factor correction (PFC) from a universal ac source, as well as a control loop using the LM3524 IC, which allows PWM dimming operation mode. Firstly, the LED load will be linearized and modeled in order to calculate the IBFC topology properly. Afterwards, the converter will be calculated, presenting the one built in the lab. Secondly, the converter will be modeled in order to build the closed loop system, modeling the current sensor as well in order to develop an adequate controller. Finally, experimental results obtained from the lab tests will be presented.

[1]  Ricardo Nederson do Prado,et al.  A high-power-factor electronic ballast using a flyback push-pull integrated converter , 1999, IEEE Trans. Ind. Electron..

[2]  J. M. Alonso,et al.  Analysis and experimental results of a single-stage high-power-factor electronic ballast based on flyback converter , 1999 .

[3]  José Marcos Alonso Alvarez,et al.  Low-cost single-stage electronic ballast based on a self-oscillating resonant inverter integrated with a buck-boost PFC circuit , 2001, IEEE Trans. Ind. Electron..

[4]  Salvador Bracho,et al.  Power-mode-controlled power-factor corrector for electronic ballast , 2005, IEEE Transactions on Industrial Electronics.

[5]  M. Rico-Secades,et al.  A novel low-cost electronic ballast to supply metal halide lamps , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[6]  D. Weng,et al.  Quasi-Active Power Factor Correction Circuit for HB LED Driver , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[7]  B. Lehman,et al.  A Probabilistic Approach of Designing Driving Circuits for Strings of High-Brightness Light Emitting Diodes , 2007, 2007 IEEE Power Electronics Specialists Conference.

[8]  Shih-Jen Cheng,et al.  A Single-Stage SEPIC PFC Converter for Multiple Lighting LED Lamps , 2008, 4th IEEE International Symposium on Electronic Design, Test and Applications (delta 2008).

[9]  Dylan Dah-Chuan Lu,et al.  Analysis and design of a single-phase hybrid mode power factor correction converter , 2008 .

[10]  Tsai-Fu Wu,et al.  Multistring LED Backlight Driving System for LCD Panels With Color Sequential Display and Area Control , 2008, IEEE Transactions on Industrial Electronics.

[11]  Chin-Sien Moo,et al.  A Single-Stage High-Power-Factor Electronic Ballast With ZVS Buck–Boost Conversion , 2008, IEEE Transactions on Industrial Electronics.

[12]  Marco A. Dalla Costa,et al.  Integrated Buck-Flyback Converter as a High-Power-Factor Off-Line Power Supply , 2008, IEEE Transactions on Industrial Electronics.

[13]  Marco A. Dalla Costa,et al.  A Single-Stage High-Power-Factor Electronic Ballast Based on Integrated Buck Flyback Converter to Supply Metal Halide Lamps , 2008, IEEE Transactions on Industrial Electronics.

[14]  Yi-Hwa Liu,et al.  High-Power-Factor Electronic Ballast With Intelligent Energy-Saving Control for Ultraviolet Drinking-Water Treatment Systems , 2008, IEEE Transactions on Industrial Electronics.

[15]  Huang-Jen Chiu,et al.  An improved single-stage Flyback PFC converter for high-luminance lighting LED lamps , 2008 .

[16]  Hong-Tzer Yang,et al.  An improved single-stage Flyback PFC converter for high-luminance lighting LED lamps , 2008, Int. J. Circuit Theory Appl..

[17]  Praveen K. Jain,et al.  A Modified Valley Fill Electronic Ballast Having a Current Source Resonant Inverter With Improved Line-Current Total Harmonic Distortion (THD), High Power Factor, and Low Lamp Crest Factor , 2008, IEEE Transactions on Industrial Electronics.

[18]  José Luiz de Freitas Vieira,et al.  HID Lamp Electronic Ballast With Reduced Component Number , 2009, IEEE Transactions on Industrial Electronics.

[19]  Huang-Jen Chiu,et al.  A High-Efficiency Dimmable LED Driver for Low-Power Lighting Applications , 2010, IEEE Transactions on Industrial Electronics.