Dynamic Characteristics of Current-Fed Superbuck Converter

A photovoltaic generator is internally a current source having features resembling either a current or voltage source depending on the operating point in respect to its maximum power point (MPP). Therefore, the MPP-tracking converter can be implemented either as a voltage-fed (VF) or current-fed (CF) converter. This paper investigates the dynamic properties of a CF superbuck converter developed from the corresponding VF superbuck converter by applying duality-transformation methods. The dynamic characterization of CF converters is not publicly presented earlier although the duality-transformation methods are known from late 1960s or even earlier. The investigations show that the state-space-averaging technique yields accurate dynamic models also in CF domain. Experimental evidence is provided based on a 400-kHz superbuck converter supplied by a real photovoltaic or solar generator and loaded by a storage battery.

[1]  R. D. Middlebrook,et al.  Input filter considerations in design and application of switching regulators. , 1976 .

[2]  Weidong Xiao,et al.  Topology Study of Photovoltaic Interface for Maximum Power Point Tracking , 2007, IEEE Transactions on Industrial Electronics.

[3]  James McLaughlin,et al.  “Deglorifying” the Maximum Power Transfer Theorem and Factors in Impedance Selection , 2007, IEEE Transactions on Education.

[4]  J. Nagaraju,et al.  Effect of solar array capacitance on the performance of switching shunt voltage regulator , 2006, IEEE Transactions on Power Electronics.

[5]  M. Valentin,et al.  Current Fed and Voltage Fed Switching DC/DC Converters - Steady State and Dynamic Models their Applications in Space Technology , 1983, INTELEC '83 - Fifth International Telecommunications Energy Conference.

[6]  Massimo Vitelli,et al.  Distributed maximum power point tracking of photovoltaic arrays: Novel approach and system analysis , 2008, IEEE Transactions on Industrial Electronics.

[7]  Weidong Xiao,et al.  Regulation of Photovoltaic Voltage , 2007, IEEE Transactions on Industrial Electronics.

[8]  H. Nehrir,et al.  Direct Energy Transfer for High Efficiency Photovoltaic Energy Systems Part I: Concepts and Hypothesis , 2009, IEEE Transactions on Aerospace and Electronic Systems.

[9]  J. Thongpron,et al.  A method for the determination of dynamic resistance of photovoltaic modules under illumination , 2006 .

[10]  H. Dehbonei,et al.  Direct Energy Transfer for High Efficiency Photovoltaic Energy Systems Part II: Experimental Evaluations , 2009, IEEE Transactions on Aerospace and Electronic Systems.

[11]  M. Veerachary,et al.  Reliability Issues in Photovoltaic Power Processing Systems , 2008, IEEE Transactions on Industrial Electronics.

[12]  Doron Shmilovitz,et al.  Interfacing photovoltaic panels via a capacitive converter , 2002, The 22nd Convention on Electrical and Electronics Engineers in Israel, 2002..

[13]  Jin-lei Ding,et al.  A new method to determine the optimum load of a real solar cell using the Lambert W-function , 2008 .

[14]  C. K. Michael Tse,et al.  Application of duality principle to synthesis of single-stage power-factor-correction voltage regulators , 2003, Int. J. Circuit Theory Appl..

[15]  Teuvo Suntio,et al.  Dynamic Profile of Switched-Mode Converter , 2009 .

[16]  T. Suntio,et al.  Issues on solar-generator-interfacing with voltage-fed converter , 2009, 2009 35th Annual Conference of IEEE Industrial Electronics.

[17]  Vivek Agarwal,et al.  Comparison of the performance of maximum power point tracking schemes applied to single-stage grid-connected photovoltaic systems , 2007 .

[18]  S. Buso,et al.  Analysis of limit cycle oscillations in maximum power point tracking algorithms , 2008, 2008 IEEE Power Electronics Specialists Conference.

[19]  Saifur Rahman,et al.  Green power: What is it and where can we find it? , 2003 .

[20]  P.L. Chapman,et al.  Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques , 2007, IEEE Transactions on Energy Conversion.

[21]  Doron Shmilovitz.  Gyrator Realization Based on a Capacitive Switched Cell , 2006, IEEE Transactions on Circuits and Systems II: Express Briefs.

[22]  Marcelo Gradella Villalva,et al.  Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays , 2009, IEEE Transactions on Power Electronics.

[23]  Doron Shmilovitz,et al.  A switched mode converter suitable for superconductive magnetic energy storage (SMES) systems , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[24]  A. Jäger-Waldau,et al.  Photovoltaics and renewable energies in Europe , 2007 .

[25]  Kasemsan Siri,et al.  Study of system instability in solar-array-based power systems , 2000, IEEE Trans. Aerosp. Electron. Syst..

[26]  Andres Barrado,et al.  Review of the maximum power point tracking algorithms for stand-alone photovoltaic systems , 2006 .

[27]  S. Freeland,et al.  Techniques for the practical application of duality to power circuits , 1989, 20th Annual IEEE Power Electronics Specialists Conference.

[28]  T. Suntio,et al.  Dynamic Properties of Interconnected Power Systems - A System Theoretic Approach , 2006, 2006 1ST IEEE Conference on Industrial Electronics and Applications.

[29]  D. Shmilovitz.  Application of duality for derivation of current converter topologies , 2005 .

[30]  R.D. Middlebtook,et al.  Design of the HEAO Main Bus Shunt Regulator , 1976, IEEE Transactions on Aerospace and Electronic Systems.

[31]  R. Dougal,et al.  Dynamic Multi-Physics Model for Solar Array , 2002, IEEE Power Engineering Review.

[32]  Marcelo Gradella Villalva,et al.  Input-controlled buck converter for photovoltaic applications: Modeling and design , 2008 .

[33]  Katsuhiko Ogata,et al.  Modern control engineering (3rd ed.) , 1996 .

[34]  Nicholas D. Benavides,et al.  Modeling the effect of voltage ripple on the power output of photovoltaic modules , 2008, IEEE Transactions on Industrial Electronics.

[35]  Teuvo Suntio,et al.  Current-Sourced Buck Converter , 2008 .

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

[37]  T. Suntio,et al.  Dynamical Modeling and Characterization of Peak-Current-Controlled Superbuck Converter , 2008, IEEE Transactions on Power Electronics.

[38]  R. Dougal,et al.  Dynamic Multi-Physics Model for Solar Array , 2002 .

[39]  Jaeho Lee,et al.  Resistive Control for a Photovoltaic Battery Charging System Using a Microcontroller , 2008, IEEE Transactions on Industrial Electronics.

[40]  S. R. Bull,et al.  Renewable energy today and tomorrow , 2001, Proc. IEEE.

[41]  Mariano Sidrach-de-Cardona,et al.  Theoretical assessment of the maximum power point tracking efficiency of photovoltaic facilities with different converter topologies , 2007 .

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

[43]  N. Jenkins,et al.  A model of PV generation suitable for stability analysis , 2004, IEEE Transactions on Energy Conversion.