Averaged-Switch Modeling of Fourth-Order PWM DC–DC Converters Considering Conduction Losses in Discontinuous Mode

This manuscript addresses dynamic average-value modeling for fourth-order pulse-width modulation (PWM) DC-DC converters in discontinuous capacitor-voltage mode. Although significant literature is devoted to analysis of the inductor-based switching stage of second-order DC-DC converters in discontinuous current mode, much less has been published regarding the discontinuous voltage mode in the capacitor-based switching stage in fourth-order converters. Accurate average-value models are further complicated by the presence of non-ideality in the switching stage components. This manuscript presents a full-order average-value model for the capacitor-based switching stage, taking into account conduction losses according to the energy conservation principle. The proposed model is validated with a hardware prototype and detailed simulation and is shown to accurately predict large-signal time-domain transients as well as small-signal frequency-domain characteristics.

[1]  A. Emadi,et al.  High performance bidirectional Cuk converter for telecommunication systems , 2004, INTELEC 2004. 26th Annual International Telecommunications Energy Conference.

[2]  Marian K. Kazimierczuk,et al.  Small-signal model of PWM converters for discontinuous conduction mode and its application for boost converter , 2003 .

[3]  R. M. Nelms,et al.  Using a Cuk converter to interface a pulsed load to a fuel cell , 2002, IECEC '02. 2002 37th Intersociety Energy Conversion Engineering Conference, 2002..

[4]  V. Grigore,et al.  High power factor rectifier based on buck converter operating in discontinuous capacitor voltage mode , 2000 .

[5]  Shu Yuen Ron Hui,et al.  Modeling, analysis, and application of buck converters in discontinuous-input-voltage mode operation , 1997 .

[6]  Marian K. Kazimierczuk,et al.  Voltage loop of boost PWM DC-DC converters with peak current-mode control , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[7]  Henry Shu-Hung Chung,et al.  A novel maximum power point tracker for PV panels using switching frequency modulation , 2002 .

[8]  W. M. Polivka.  Resolution of an averaging paradox in the analysis of switched-mode DC-DC converters , 1994 .

[9]  Slobodan Cuk.  General topological properties of switching structures , 1979, 1979 IEEE Power Electronics Specialists Conference.

[10]  W. Gu.  Small signal modeling for current mode controlled Cuk and SEPIC converters , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[11]  V. Vorperian.  Simplified analysis of PWM converters using model of PWM switch. II. Discontinuous conduction mode , 1990 .

[12]  Dragan Maksimovic,et al.  A Unified Analysis of PWM Converters in , 1991 .

[13]  Yuang-Shung Lee,et al.  Battery Equalization Using Bi-directional Cuk Converter in DCVM Operation , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[14]  Yim-Shu Lee,et al.  Power-factor correction using Cuk converters in discontinuous-capacitor-voltage mode operation , 1997, IEEE Trans. Ind. Electron..

[15]  K. Al-Haddad,et al.  A Novel Averaged-Model-Based Control of a SEPIC Power Factor Corrector Using the Input/Output Feedback Linearization Technique , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[16]  Issa Batarseh,et al.  Modeling of conduction losses in PWM converters operating in discontinuous conduction mode , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[17]  Dariusz Czarkowski,et al.  Application of the principle of energy conservation to modeling the PWM converters , 1993, Proceedings of IEEE International Conference on Control and Applications.

[18]  Adaptive Model Applied to PWM DC-DC Converters Using Averaging Techniques , 2006, 2006 IEEE International Symposium on Industrial Electronics.

[19]  Yu-Kai Chen,et al.  Modeling PWM DC/DC converters out of basic converter units , 1998 .

[20]  Yim-Shu Lee,et al.  A new approach to the modeling of converters for SPICE simulation , 1992 .

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

[22]  Jian Sun,et al.  Reduced-order averaged modeling of active-clamp converters , 2006 .