Constant-Frequency Magnetically Controlled Universal Ballast With SoS Compliance for TL5 Fluorescent Lamps

This paper presents the development of a universal electronic ballast for TL5 lamps. The intent is to efficiently operate the maximum number of TL5 lamps with different power ratings at nominal power, using a resonant variable inductance, provided by a magnetic regulator, while maintaining the switching frequency constant. A microcontroller and additional digital circuitry are used to command a dc-dc buck converter to supply the necessary dc control current to the magnetic regulator and to regulate the switching frequency of the half-bridge resonant inverter that supplies the lamp. The selection of the resonant capacitance is done in order to comply with the SoS limits established for each lamp. Experimental results with lamps ranging from 14 to 49 W, operating with high efficiency and high output, are presented in this paper.

[1]  M.S. Perdigao,et al.  Using Magnetic Regulators for the Optimization of Universal Ballasts , 2008, IEEE Transactions on Power Electronics.

[2]  Praveen K Jain,et al.  A Novel High-Power-Factor Single-Switch Electronic Ballast , 2010, IEEE Transactions on Industry Applications.

[3]  Regan Zane,et al.  Digitally Controlled Low-Frequency Square-Wave Electronic Ballast With Resonant Ignition and Power Loop , 2010, IEEE Transactions on Industry Applications.

[4]  Piyasawat Navaratana Na Ayudhya,et al.  Automatic Fluorescent Lamp Detection Technique for Electronic Ballasts , 2009, 2008 IEEE International Conference on Robotics and Biomimetics.

[5]  J. M. Alonso,et al.  Magnetic control of DC-DC resonant converters provides constant frequency operation , 2010 .

[6]  José Marcos Alonso Alvarez,et al.  Optimizing Universal Ballasts Using Magnetic Regulators and Digital Control , 2011, IEEE Transactions on Industrial Electronics.

[7]  L.H. Goud,et al.  Standardized data for dimming of fluorescent lamps , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[8]  E. S. Saraiva,et al.  Magnetic regulator topologies for dimmable electronic ballasts , 2010, 2010 IEEE International Symposium on Industrial Electronics.

[9]  Leung-Ming Lee,et al.  Automatic Lamp Detection and Operation for Warm-Start Tubular Fluorescent Lamps , 2009, IEEE Transactions on Power Electronics.

[10]  P. Mattavelli,et al.  Two-phase interleaved LLC resonant converter with current-controlled inductor , 2009, 2009 Brazilian Power Electronics Conference.

[11]  Ching R. Lee,et al.  A Novel Constant-Power Control for Metal-Halide Lamp Electronic Ballasts with Dimming Capability , 2010, IEEE Transactions on Plasma Science.

[12]  Nan Chen,et al.  A Dimming Module for Controlling Power Supplying to a Fluorescent Lamp Ballasted by a Nondimmable Electronic Ballast , 2010, IEEE Transactions on Power Electronics.

[13]  M. Rico-Secades,et al.  A new control method for electronic ballasts based on magnetic regulators , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[14]  Slobodan Cuk,et al.  Magnetic regulator modeling , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[15]  H.S.-H. Chung,et al.  Iterative Behavioral Modeling of Charge-Pump-Based Electronic Ballast–Fluorescent Lamp System , 2009, IEEE Transactions on Power Electronics.

[16]  Sumate Naetiladdanon,et al.  Automatic fluorescent lamp detection for electronic ballasts based on operating frequency and phase shift compensation , 2009, 2009 IEEE International Symposium on Industrial Electronics.

[17]  Muhammad H. Rashid,et al.  Power electronics handbook , 2001 .

[18]  S.Y.R. Hui,et al.  An automatic lamp detection technique for electronic ballasts , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[19]  H.Y. Wang,et al.  A novel discrete dimming ballast for linear fluorescent lamps , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[20]  Jorge García,et al.  Magnetic dimming of electronic ballasts , 2005 .

[21]  M.M. Jovanovic,et al.  Universal-input single-stage PFC flyback with variable boost inductance for high-brightness LED applications , 2010, 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[22]  Farheen Khan,et al.  Cathode fall measurements in fluorescent lamps , 2005 .

[23]  Selim Öncü,et al.  Dimming self-oscillating ballast by variable inductor , 2007 .

[24]  S. Ben-Yaakov,et al.  A current-controlled variable-inductor for high frequency resonant power circuits , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[25]  Guan-Chyun Hsieh.  Group-Asymmetrical PWM Control for Dimmable Fluorescent Lamp Ballast Without Striation and Thermostat Effect , 2009, IEEE Transactions on Power Electronics.

[26]  M. Kazimierczuk,et al.  Resonant Power Converters , 1995 .

[27]  C. S. Moo,et al.  Designing dimmable electronic ballast with frequency control , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).