A Novel Space Vector Modulation Based Control Strategy for Z-Source Inverter

Ozgun Girgin, Volkan Erginer, Ozgun Girgin


In this study, a novel control strategy based on Distributed Space Vector Modulation is proposed considering to improve dynamic performance of Z Source Inverter (ZSI) while obstructing high voltage stresses on inverter switches and high loss. Distributed space vector modulation lets ZSI output voltage to be controlled by Z source capacitor voltage with a simple equation. Therefore, only one voltage feedback is enough to control inverter output voltage. Furthermore, no zero state is utilized in the proposed control strategy so an additional control loop for modulation index is no longer needed. Flexible modulation index lets work with flexible dc line voltage and it makes it possible to limit voltage stresses across inverter switches so ZSI has low cost switches and also high efficiency. Moreover, the proposed control method has been investigated for both resistive and inductive loads due to ZSI load power factor depended characteristics. Effectiveness of the suggested control method is verified with Matlab/Simulink simulations considering sudden changes both in dc source and load level.


dc-ac power converters; inverters; power conditioning; power system dynamics; linear feedback control systems.

Full Text:



F. Z. Peng, “Z-Source Inverter”, IEEE Transactions On Industry Applications, vol. 39, no. 2, pp. 504-510, 2003. [Online] Available: http://dx.doi.org/10.1109/TIA.2003.808920

Y.P. Siwakoti, F. Z. Peng, F. Blaabjerg, P. C. Loh, G. E. Town, “Impedance-Source Networks for Electric Power Conversion Part I: A Topological Review”, IEEE Transactions On Power Electronics, vol. 30, no. 4, pp. 699-716, 2015. [Online] Available: http://dx.doi.org/10.1109/TPEL.2014.2313746

Y.P. Siwakoti, F. Z. Peng, F. Blaabjerg, P. C. Loh, G. E. Town, S. Yang, “Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques”, IEEE Transactions On Power Electronics, vol. 30, no. 4, pp. 1887-1906, 2015. [Online] Available: http://dx.doi.org/10.1109/TPEL.2014.2329859

M. M. Bajestan, M. A. Shamsimejad and D. A. Khaburi, “Derivation of AC small signal model and analysis of trans Z-source inverter”, in 23rd Iranian Conference on Electrical Engineering, Tehran, May 2015, pp. 1624-1629. [Online] Available: http://dx.doi.org/10.1109/IranianCEE.2015.7146479

A. Florescu, O. Stocklosa, M. Teodorescu, C. Radoi, D. A. Stoichescu, S. Rosu, "The advantages, limitations and disadvantages of Z-source inverter", in IEEE International Semiconductor Conference (CAS), Sinaia, Oct. 2010, pp. 483-486. [Online] Available: http://dx.doi.org/10.1109/SMICND.2010.5650503

G. Sen, M. Elbuluk, “Voltage and current programmed modes in control of the Z-source converter”, IEEE Trans. Ind. Appl., vol. 46, no. 2, pp. 680–686, 2010. [Online] Available: http://dx.doi.org/10.1109/TIA.2010.2040054

X. Ding, Z. Qian, S. Yang, B. Cui, F. Peng, “A PID control strategy for dc-link boost voltage in Z-source inverter”, in IEEE 22nd Annual Aplpied Power Electronics Conference, Anaheim, USA, 2007, pp. 1145–1148. [Online] Available: http://dx.doi.org/10.1109/APEX.2007.357659

M. Shen,Q. Tang, F. Z. Peng, “Modeling and controller design of the Z-source inverter with inductive load”, in IEEE Power Electron. Spec. Conf., Orlando, 2007, pp. 1804–1809. [Online] Available: http://dx.doi.org/10.1109/PESC.2007.4342275

W. Mo, P. C. Loh, F. Blaabjerg, “Model predictive control for Z-source power converter”, in 8th Int. Conf. on Power Electronics, Jeju, 2011, pp. 3022–3028. [Online] Available: http://dx.doi.org/10.1109/ICPE.2011.5944809

M. Mosa, O. Ellabban, A. Kouzou, A. R. Haitham, J. Rodriguez, “Model Predictive Control Applied for Quasi-Z-Source Inverter”, in Applied Power Electronics Conference and Exposition, Long Beach, 2013, pp. 165-169. [Online] Available: http://dx.doi.org/10.1109/APEC.2013.6520202.

C. J. Gajanayake, D. M. Vilathgamuwa, P. C. Loh, “Development of a Comprehensive Model and a Multiloop Controller for Z–Source Inverter DG Systems”, IEEE Trans. Ind. Appl., vol. 54, no.4, pp. 2352-2359, 2007. [Online] Available: http://dx.doi.org/10.1109/TIE.2007.894772

O. Ellabban, J .V. Mierlo, P. Lataire, "A DSP-based dual-loop peak DC-link voltage control strategy of the Z-source inverter", IEEE Transactions on Power Electronics, vol. 27, no. 9, pp. 4088-4097, 2012. [Online] Available: http://dx.doi.org/10.1109/TPEL.2012.2189588

Y. Liu, B. Ge, H. Abu-Rub, F. Z. Peng, “Control System Design of Battery-Assisted Quasi-Z-Source Inverter for Grid-Tie Photovoltaic Power Generation”, IEEE Transactions On Sustainable Energy, vol. 4, no. 4, pp. 994-1001, 2013. [Online] Available: http://dx.doi.org/10.1109/TSTE.2013.2263202

S. Yang, X. Ding, F. Zhang, F. Z. Peng, Z. Qian, “Unified control technique for Z-source inverter”, in IEEE Power Electron. Spec. Conf., Rhodes, 2008, pp. 3236–3242. [Online] Available: http://dx.doi.org/10.1109/PESC.2008.4592452

Ö. Girgin, V. Erginer, M. H. Sarul, “Analysis and Comparison of Control Methods of Z-Source Inverters Used in Photovoltaic Systems”, in Proceedings of the World Congress on Electrical Engineering and Computer Systems and Science (EECSS 2015), Barcelona, July 2015, pp. 148/1-148/11. [Online] Available: http://avestia.com/EECSS2015_Proceedings/files/papers/EEE148.pdf

V. Erginer, M. H. Sarul, “A novel control method for Z-source inverters used in photovoltaic systems”, in the 7th IET International Conference on Power Electronics, Machines and Drives (PEMD), Manchester, April 2014, pp. 1-5. [Online] Available: http://dx.doi.org/10.1049/cp.2014.0250

M. Shen, F. Z. Peng, “Operation Modes and Characteristics of the Z-Source Inverter With Small Inductance or Low Power Factor”, IEEE Transactions On Industrial Electronics, vol. 55, no. 1, pp. 89-96, 2008. [Online] Available: http://dx.doi.org/10.1109/TIE.2007.909063

V. Erginer, M. H. Sarul, "A novel reduced leakage current modulation technique for Z-source inverter used in photovoltaic systems", IET Power Electronics, vol. 7, no. 3, pp. 496-502, 2014. [Online] Available: http://dx.doi.org/10.1049/iet-pel.2013.0187

P. C. Loh, D. M. Vilathgamuwa, C. J. Gajanayake, Y. R. Lim, C. W. Teo, “Transient modeling and analysis of pulse-width modulated Zsource inverter”, IEEE Trans. Power Electron., vol. 22, no. 2, pp. 498–507, 2007. [Online] Available: http://dx.doi.org/10.1109/TPEL.2006.889929

J. Liu, J. Hu, L. Xu, “Dynamic modelling and analysis of Z source converter-derivation of AC small signal model and design-oriented analysis”, IEEE Trans. Power Electron., vol. 22, no. 5, pp. 1786–1796, 2007. [Online] Available: http://dx.doi.org/10.1109/TPEL.2007.904219

M. Forouzesh, Y. P. Siwakoti, F. Blaabjerg, S. Hasanpour, “Small-Signal Modeling and Comprehensive Analysis of Magnetically Coupled Impedance-Source Converters”, IEEE Transactions On Power Electronics, vol. 31, no. 11, pp. 7621-7641, 2016. [Online] Available: http://dx.doi.org/10.1109/TPEL.2016.2553849


Copyright (c) 2018 Informacije MIDEM