The Usage of the Digital Controller in Regulating Boost Converter
- 1 Department of Control Systems, Faculty of Electronic Engineering, University of Nis, Nis, Republic of Serbia
- 2 Department of Control Systems, Faculty of Electronic Engineering, University of Nis, Nis, Republic of Serbia
- 3 Department of Control Systems, Faculty of Electronic Engineering, University of Nis, Nis, Republic of Serbia
Abstract
This paper proposes the modeling and simulation technique to analyze and design a Boost converter using generalized minimum variance method with discrete-time quasi-sliding mode to adjust the converter switch through a pulse width modulation (PWM), so as to enhance a stable output voltage. The control objective is to maintain the sensed output voltage stable, constant and equal to some constant reference voltage (8 volt) in the load resistance variation (24, 48, 240) Ω and input voltage variation (20, 24, 28) volt circumstances. This control strategy is very appropriate for the digitally controlled power converter and for the system requirement accomplishment, resulting high output voltage accuracy. The performance degradation in practical implementation can be expected due to noise, PWM nonlinearities, and components imperfection. The digital simulation using MATHLAB/Simulink is performed to validate the functionality of the system.
- Erickson, R.W. and Maksimovic, D. (2000) Fundamentals of Power Electronics. 2nd Edition, Kluwer Academic Publishers, Dordrecht.
- Johansson, B. (2004) DC-DC Converters Dynamic Model Design and Experimental Verification. Ph.D. Dissertation, Lund University, Lund. http://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=24326&fileOId=26469
- Tang, S.C., Lai, Y.M. and Tsi, C.K. (2006) A Unified Approach to the Design of PWM-Based Sliding-Mode Voltage Controllers for Basic DC-DC Converters in Continuous Conduction Mode. IEEE Transactions on Circuits and Systems, 53, 1816-1826. http://dx.doi.org/10.1109/TCSI.2006.879052
- Utkin, V.I. (1978) Sliding Modes and Their Applications in Variable Structure Systems. Moscow, Nauka, Mir.
- Mattavelli, P., Rossetto, L., Spiazzi, G. and Tenti, P. (1993) General-Purpose Sliding-Mode Controller for DC/DC Converter Applications. IEEE Power Electronics Specialists Conference Record (PESC), Seattle, 20 June-24 June 1993, 609-615. http://dx.doi.org/10.1109/pesc.1993.471989
- Venkataramanan, R. (1986) Sliding Mode Control of Power Converters. Ph.D. Dissertation, California Institute of Technology, Pasadena.
- Milosavljevic, C. (1985) General Conditions of the Existence of a Quasi-Sliding Mode on the Switching Hyperplane in Discrete Variable Structure Systems. Automatic Remote Control, 46, 307-314.
- Mitic, D. and Milosavljevic, C. (2004) Sliding Mode Based Minimum Variance and Generalized Minimum Variance Controls with O(T2) and O(T3) Accuracy. Journal of Electrical Engineering (Archiv fur Elektrotechnik), 86, 229-237.
- Sira-Ramirez, H.J. and Ilic, M. (1988) A Geometric Approach to the Feedback Control of Switch Mode DC-to-DC Power Supplies. IEEE Transactions on Circuit and Systems, 35, 1291-1298. http://dx.doi.org/10.1109/31.7602
- Mitic, D. (2006) Digital Variable Structure Systems Based on Input-Output Model. Ph.D. Disertation, University of Nis, Nis.
- Mitic, D. and Antic, D. (2012) Input-Output Based Quasi-Sliding Mode Control of DC-DC Converter. Facta Universities, Series: Electronics and Energetic, 25, 69-80. http://dx.doi.org/10.2298/FUEE1201069M
- Tang, S.C. (2008) General Design Issues of Sliding-Mode Controllers in DC-DC Converters. IEEE Proceeding of Transactions on Circuits and Systems, 55, 1160-1174.
- Morel, C., Guignard, C. and Guillet, M. (2002) Sliding Mode Control of DC-DC Power Converters. Proceedings of the 9th International Conference of Electronics, Circuits Systems, 3, 971-974. http://dx.doi.org/10.1109/ICECS.2002.1046411