Lagrangian modelling of a synchronous step-down converter by considering the parasitic elements

• Autorzy: Skandarnezhad A. , Koochaki A. , Mohammadmoradi Y. , Kalteh A.

Identyfikatory

DOI

10.15199/48.2016.03.02

Warianty tytułu

PL

Modelowanie synchronicznego przekształtnika z wykorzystaniem równań Lagnrange u uwzględnieniem efektów pasożytniczych

• Języki publikacji: EN

Abstrakty

EN

This paper introduces a new technique to model a synchronous buck converter in the closed loop compensated conditions by Lagrange equation. In the design process of converters it is desirable to assess as many critical design parameters and parasitic effects by simulation as possible, since the control is hard to tune after fabrication. The main advantage of this method is its versatility and simple implementation. In this work, switch conduction loss of an integrated, synchronous buck converter is identified to have significant influence on control loop dynamics. Thus, an equivalent small-signal model for the close loop frequency response accounting for switch conduction loss is developed. Finally, the model is validated against the frequency response obtained by periodic stability analysis which can account for parasitic effects and loading. Very good agreement between the extended model and the simulation results obtained.

PL

W artykule opisano modelowania z wykorzystaniem równań Lagrange synchronicznego przekształtnika typu buck. Straty przełączania są identyfikowane jako wpływające na dynamikę. Analizowano okresową stabilność z uwzględnieniem efektów pasożytniczych.

Słowa kluczowe

EN

averaged model; buck converter; Lagrange equation; compensator

PL

równanie Lagrange'a; przekształtnik synchroniczny; układ buck

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2016
• Tom: R. 92, nr 3
• Strony: 6--10
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Skandarnezhad A.

• Faculty Member of Electrical Engineering, Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

autor

Koochaki A.

• Faculty Member of Electrical Engineering, Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

autor

Mohammadmoradi Y.

• Faculty Member of Electrical Engineering, Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

autor

Kalteh A.

• Faculty Member of Electrical Engineering, Department of Electrical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

Bibliografia

• [1] Zdanowski M., Rąbkowski J., Barlik R., High frequency DC/DC converter with Silicon Carbide devices - simulation analysis, Przegląd Elektrotechniczny, 02(2014), 201-205.
• [2] Bogusz P., The laboratory stand for testing of light electric vehicles drives - design and implementation, Przegląd Elektrotechniczny, 01(2014), 16-20.
• [2] Shepherd W., Zhang L., Power Converter Circuits, Marcel Dekker, New York, 2004.
• [4] Kursun V., Narendra S., Vivek K., Friedman G., Efficiency Analysis of a High Frequency Buck Converter for On-Chip Integration with a Dual-VDD Microprocessor, ESSCIRC 2002, 743-746.
• [5] Gajowik T., Rafał K., Bobrowska M., Bi-directional DC-DC converter in three-phase Dual Active Bridge Topology, Przegląd Elektrotechniczny, 05(2014), 14-20.
• [6] Curry, J., Hamiltonian and Lagrangian Mechanics, Vol.1, ed.2, CSI Publishing, USA, 2013.
• [7] Hand L. N. and Finch, J. D., Analytical Mechanics, Camb. Univ. Press, UK, 1999.
• [8] Ramirez, S. H., et al., Passivity-Based Control of Euler-Lagrange Systems, Springer, London, 1998.
• [9] Kazmierczuk, M. K., Pulse Width Modulated DC-DC Power Converters, Wiley, Ohio, 2008.
• [10] Joseph N., Control and Analysis of Synchronous Rectifier Buck Converter for ZVS in Light Load Condition, International Journal of Advanced Research in Electrical,Electronics and Instrumentation engineering 02(2013), NO.06, 2440-2447.
• [11] SiC ZERO RECOVERYÒ Schottky Diode Reliability at Extremely High Voltage Slew Rates, CPWR-RS01, Rev A, "www.cree.com".
• [12] Jardini J.A., and et al., Power flow control in the converters interconnecting AC-DC meshed systems, Przegląd Elektrotechniczny, 01(2015), 46-49.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.