QFT design for current-mode PWM buck converters operating in continuous and discontinuous conduction modes

A design method using quantitative feedback theory (QFT) for robust control of current-mode PWM dc-dc converters is described. The proposed method considers both continuous and discontinuous conduction mode models (CCM and DCM respectively), taking into account large load perturbations. This technique results in a robust design insensitive to parameter variations and also to model changes

[1]  Robert W. Erickson,et al.  Fundamentals of Power Electronics , 2001 .

[2]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1977 .

[3]  Bengt Johansson.  DC-DC Converters - Dynamic Model Design and Experimental Verification , 2005 .

[4]  F. D. Tan,et al.  A unified model for current-programmed converters , 1995 .

[5]  D. Howe,et al.  Design of robust current tracking control for active power filters , 2001, IEMDC 2001. IEEE International Electric Machines and Drives Conference (Cat. No.01EX485).

[6]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1976, 1970 IEEE Power Electronics Specialists Conference.

[7]  Steven J. Rasmussen,et al.  Quantitative feedback theory: fundamentals and applications: C. H. Houpis and S. J. Rasmussen; Marcel Dekker, New York, 1999, ISBN: 0-8247-7872-3 , 2001, Autom..

[8]  Abdelali El Aroudi,et al.  QFT control for DC-DC buck converters , 2006, 2006 IEEE International Symposium on Circuits and Systems.

[9]  M. Sznaier,et al.  Robust control design for a parallel resonant converter using /spl mu/-synthesis , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[10]  R. B. Ridley,et al.  A new, continuous-time model for current-mode control (power convertors) , 1991 .

[11]  Luis Martinez-Salamero,et al.  Analysis and design of H/sub /spl infin// control of nonminimum phase-switching converters , 2003 .

[12]  Jian Sun,et al.  Averaged modeling of PWM converters operating in discontinuous conduction mode , 2001 .

[13]  B.H. Cho,et al.  Comparison of performance of single-loop and current-injection-control for PWM converters which operate in both continuous and discontinuous modes of operation , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[14]  Mario Sznaier,et al.  Robust controller design for a parallel resonant converter using /spl mu/-synthesis , 1994 .

[15]  B. Johansson.  A comparison and an improvement of two continuous-time models for current-mode control , 2002, 24th Annual International Telecommunications Energy Conference.

[16]  A.M. Stankovic,et al.  Design of robust controllers for resonant DC/DC converters , 1995, Proceedings of International Conference on Control Applications.

[17]  Isaac Horowitz,et al.  Quantitative feedback design theory : QFT , 1993 .

[18]  R.B. Ridley,et al.  A new continuous-time model for current-mode control with constant frequency, constant on-time, and constant off-time, in CCM and DCM , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.