Simulation Study of Nonlinear PI-Controller with Quasi-Z-Source Derived Push-Pull Converter

Open access


This paper is focused on the control issues of the quasi-Z-source derived push-pull converter with integrated magnetic elements. The proposed converter is intended for applications that require a high gain of the input voltage and galvanic isolation, i.e. power conditioning systems for renewable energy sources, such as variable speed wind turbines with direct driven permanent magnet synchronous generators. Magnitude and frequency of the output voltage of such turbines are variable due to intermittent nature of the wind power. Despite number of advantages converter has complicated dynamic behavior. Simulations showed change of stability margin depending on current operation point of the wind turbine and output load. Closed loop control system should provide fast response and stable operation in the wide range of wind speeds. Simulations showed that the conventional PI-controller with saturation cannot satisfy those requirements. Nonlinear PI-controller was derived by adding adjustment block to the conventional PI-controller. Adjustment block is drastically changing proportional and integral gains of the controller according to sign of the output voltage error. Proposed controller is compared with conventional one by means of simulation in PSIM. Simulation results prove that proposed nonlinear control system has improved regulator performance.

  • [1] J. Anderson, F. Z. Peng, "Four Quasi-Z-Source Inverters," in Proceedings of Power Electronics Specialists Conference 2008 (PESC’2008), pp. 2743-2749, 15-19 June 2008.

  • [2] C. Roncero-Clemente, S. Stepenko, O. Husev, V. Miñambres-Marcos, E. Romero-Cadaval, and D. Vinnikov, "Three-Level Neutral-Point- Clamped Quasi-Z-Source Inverter with Maximum Power Point Tracking for Photovoltaic Systems," Technological Innovation for the Internet of Things, vol. 394, L. Camarinha-Matos, S. Tomic, and P. Graça, Eds., ed: Springer Berlin Heidelberg, 2013, pp. 334-342.

  • [3] Yuan Li, J. Anderson, F.Z. Peng, Dichen Liu, "Quasi-Z-Source Inverter for Photovoltaic Power Generation Systems," in Proceedings of Twenty- Fourth Annual IEEE Applied Power Electronics Conference and Exposition, (APEC’2009), pp. 918-924, 15-19 Feb. 2009.

  • [4] Liu Yushan, Baoming Ge, Fang Zheng Peng, Abu Rub Haitham, Anibal T. de Almeida, Fernando J.T.E. Ferreira, "Quasi-Z-Source Inverter Based PMSG Wind Power Generation System," in Proceedings of 2011 IEEE Energy Conversion Congress and Exposition (ECCE’2011), pp. 291-297, 17-22 Sept. 2011.

  • [5] C. Roncero-Clemente, E. Romero-Cadaval, O. Husev, D. Vinnikov, and S. Stepenko, “Simulation of Grid Connected Three-Level Neutral-Point- Clamped qZS Inverter using PSCAD,” The Scientific Journal of Riga Technical University - Electrical, Control and Communication Engineering, vol. 2, pp. 14-19.

  • [6] Feng Guo, Lixing Fu, Chien-Hui Lin, Cong Li, Woongchul Choi, Jin Wang, "Development of an 85-kW Bidirectional Quasi-Z-Source Inverter With DC-Link Feed-Forward Compensation for Electric Vehicle Applications," IEEE Transactions on Power Electronics, vol. 28, no. 12, pp. 5477-5488, Dec. 2013.

  • [7] D. Vinnikov, I. Roasto, "Quasi-Z-Source-Based Isolated DC/DC Converters for Distributed Power Generation," IEEE Transactions on Industrial Electronics, vol. 58, no. 1, pp. 192-201, Jan. 2011.

  • [8] D. Vinnikov, L. Bisenieks, I. Galkin, "New Isolated Interface Converter for PMSG based Variable Speed Wind Turbines," Przeglad Elektrotechniczny, vol. 88, no 1a, pp. 75-80, 2012.

  • [9] D. Vinnikov, I. Roasto, R. Strzelecki, M. Adamowicz, "Step-Up DC/DC Converters With Cascaded Quasi-Z-Source Network," IEEE Transactions on Industrial Electronics, vol. 59, no. 10, pp. 3727-3736, Oct. 2012.

  • [10] M. Arifujjaman, M.T. Iqbal, J.E. Quaicoe, "A comparative study of the reliability of the power electronics in grid connected small wind turbine systems," in Proceedings of Canadian Conference on Electrical and Computer Engineering 2009 (CCECE’09), pp. 394-397, 3-6 May 2009.

  • [11] F. Blaabjerg, M. Liserre, K. Ma, "Power Electronics Converters for Wind Turbine Systems," 2011 IEEE Energy Conversion Congress and Exposition (ECCE’2011), pp. 281-290, 17-22 Sept. 2011.

  • [12] L. Barote, C. Marinescu, "PMSG Wind Turbine System for Residential Applications," in Proceedings of 2010 International Symposium on Power Electronics Electrical Drives Automation and Motion (SPEEDAM’2010), pp. 772-777, 14-16 June 2010.

  • [13] O. Husev, D. Vinnikov, I. Roasto, "Stability Analysis of the Quasi-ZSource DC/DC Converter Based on Small Signal Model," in Proceedings of 2012 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM’2012), pp. 298-303, 20-22 June 2012.

  • [14] Yuan Li, Fang Z. Peng, "AC Small Signal Modeling, Analysis and Control of Quasi-Z-Source Converter," in Proceedings of 7th International Power Electronics and Motion Control Conference (IPEMC’2012), vol. 3, pp. 1848-1854, 2-5 June 2012.

  • [15] D. Vinnikov, J. Zakis, O. Husev, R. Strzelecki, "New High-Gain Step-Up DC/DC Converter with High-Frequency Isolation," 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC’2012), pp. 1204-1209, 5-9 Feb. 2012.

  • [16] A. Blinov, D. Vinnikov, O. Husev, A. Chub, "Experimental Analysis of Wide Input Voltage Range qZS-derived Push-Pull DC/DC Converter for PMSG-based Wind Turbines," in Proceedings of PCIM Europe 2013, Nuremberg, Germany, 14-16 May 2013. Berlin: VDE VERLAG GMBH, 2013, pp. 1435-1444.

  • [17] Manfred Stiebler, Wind Energy Systems for Electric Power Generation. Berlin: Springer Verlag Berlin Heidelberg, 2008.

  • [18] He Xu; Jing Hui; Dinghui Wu; Wenxu Yan, "Implementation of MPPT for PMSG-based small-scale wind turbine," in Proceedings of 4th IEEE Conference on Industrial Electronics and Applications (ICIEA’2009), pp. 1291-1295, 25-27 May 2009

  • [19] O. Husev, A. Blinov, D. Vinnikov, A. Chub, "Steady-State Analysis of qZS-Derived Push-Pull DC/DC Converter with Wide Input Voltage Regulation Range," in Proceedings of 8th International Conference- Workshop Compatibility and Power Electronics (CPE’2013), pp. 320-325, Ljubljana, Slovenia, 05-07 June 2013.

  • [20] M. Pathmanathan, C. Tang, W.L. Soong, N. Ertugrul, "Comparison of Power Converters for Small-Scale Wind Turbine Operation," in Proceedings of 2008 Australasian Universities Power Engineering Conference (AUPEC’08), pp. 1-6, 14-17 Dec. 2008.

  • [21] Shao Zhang, King-Jet Tseng, D.M. Vilathgamuwa, Trong Duy Nguyen, Xiao-Yu Wang, "Design of a Robust Grid Interface System for PMSGBased Wind Turbine Generators," IEEE Transactions on Industrial Electronics, vol. 58, no. 1, pp. 316-328, Jan. 2011.

Electrical, Control and Communication Engineering

The Journal of Riga Technical University

Journal Information


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 41 41 21
PDF Downloads 17 17 10