Modeling single-stage high-power-factor AC-DC converters for LED driving applications

In this paper a methodology to modeling high-power-factor (HPF) ac-dc converters in LED driving applications is presented. The proposed methodology is based on the averaging methodology applied to the converter under modeling. An averaged large-signal equivalent circuit is generated in this manner, which will be useful to perform extremely fast computer simulations. From the large-signal model both steady-state and small-signal analysis can be carried out to completely modeling the converter, achieving any desired steady-state characteristic and small-signal transfer functions. The proposed methodology is very intuitive and allows designers to achieve a natural understanding of the LED driver performance. The modeling procedure is illustrated with a HPF buck-boost converter operating in discontinuous conduction mode (DCM) designed to supply a 70W LED lamp. Simulation and experimental results demonstrate the validity of the proposed methodology.

[1]  Mao-Fu Lai,et al.  Design of power factor corrector for the off-line isolated buck/boost converter by a voltage-follower technique , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[2]  Robert W. Erickson,et al.  Small-signal analysis of frequency-controlled electronic ballasts , 2003 .

[3]  Milan M. Jovanovic,et al.  State-of-the-art, single-phase, active power-factor-correction techniques for high-power applications - an overview , 2005, IEEE Transactions on Industrial Electronics.

[4]  M. Kazimierczuk.  Pulse-Width Modulated DC-DC Power Converters: Kazimierczuk/Pulse-width Modulated DC-DC Power Converters , 2008 .

[5]  José Luiz de Freitas Vieira,et al.  Modeling of the high-power-factor discontinuous boost rectifiers , 1999, IEEE Trans. Ind. Electron..

[6]  G. C. Verghese,et al.  Hierarchical approaches to modeling high-power-factor AC-DC converters , 1991 .

[7]  Byungcho Choi,et al.  Modeling and small-signal analysis of controlled on-time boost power-factor-correction circuit , 2001, IEEE Trans. Ind. Electron..

[8]  I. Batarseh,et al.  Small-signal modeling of a single-switch AC/DC power factor correction circuit , 1998 .

[9]  J. M. Noworolski,et al.  Generalized in-plane circuit averaging , 1991, [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition.

[10]  Kamal Al-Haddad,et al.  Small-signal modelling and linear control of a high efficiency dual boost single-phase power factor correction circuit , 2009 .

[11]  Tsai-Fu Wu,et al.  An alternative approach to systematically modeling PWM DC/DC converters in DCM based on the graft scheme , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[12]  D. Kubrich,et al.  Averaged large signal model of boost power factor corrector in boundary conduction mode , 2009, 2009 13th European Conference on Power Electronics and Applications.

[13]  Jih-Sheng Lai,et al.  Design consideration for power factor correction boost converter operating at the boundary of continuous conduction mode and discontinuous conduction mode , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[14]  N. Mohan,et al.  A Unified Analysis of CCM Boost PFC for Various Current Control Strategies , 2006, 2006 International Conference on Power Electronic, Drives and Energy Systems.

[15]  J.-S. Lai,et al.  A study of power correction boost converter operating at CCM-DCM mode , 1993, Proceedings of Southeastcon '93.

[16]  Richard Redlt.  Invited paper. Power-factor correction in single-phase switching-mode power supplies—an overview , 1994 .

[17]  F. Lee,et al.  Small-signal modeling of the single-phase boost high power factor converter with constant frequency control , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[18]  Marian K. Kazimierczuk,et al.  Pulse-Width Modulated DC-DC Power Converters , 2008 .