An Exact Linearization Method for DC-Side Controllers of Z-Source Inverters in Grid-Tied PV System Applications
Main Article Content
Abstract
This paper presents a new control strategy for grid-connected Z-source inverter which is a part of the residental photovoltaics (PV) system. The control system consists of a DC control loop, which is designed based on the exact linearization method to guarantee that the DC input voltage of the ZSI quickly tracks the reference value which is given by the maximum power point tracking (MPPT) algorithm. By using the proposed control strategy, the maximum power is delivered to the grid despite the variety of environmental temperature and solar irradiation. The effectiveness of the proposed control strategy is verified by simulation using Matlab/Simpower systems under various operating conditions of the PV.
Keywords
Z-source inverters (ZSI), grid-tied PV system, an exact linearization method
Article Details
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References
[1] M. G. Villalva, J. R. Gazoli, E. Ruppert F., Modeling and circuit - based simulation of photovoltaic arrays, COBEP'09 Power Electronics Conference, 2009, Brazilian. https://doi.org/10.1109/COBEP.2009.5347680
[2] Trishan Esram, Patrick L. Chapman, Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques, IEEE Transaction of energy conversion, vol 22, no.2, June 2007. https://doi.org/10.1109/TEC.2006.874230 [3] Fang Zheng Peng, Z-source inverter, IEEE transactions on industry applications, vol.39, no.2, March/April, 2003. https://doi.org/10.1109/TIA.2003.808920
[4] Po XU, Xing ZHANG, Chong-wei ZHANG, Renxian,CAO and Liuchen CHANG, Study of Z-Source Inverter for Grid-Connected PV Systems, PESC'06 Power Electronics Specialists Conference, 2006, 37th IEEE.
[5] Xiaogao Chen, QingFu, David Infield, Shijie YU, Modeling and Control of Z-Source Grid-connected PV System with APF Function, Universities Power Engineering Conference (UPEC) 2009, Proceedings of the 44th International. [6] Antoneta Iuliana Bratcu, Iulian Munteanu, Seddik Bacha, Bertrand Raison, Maximum Power Point Tracking of Grid-connected Photovoltaic Arrays by Using Extremum Seeking Control, Journal of Control Engineering and Applied Informatics (CEAI) Vol.10 No. 4 pp. 3-12 2008.
[7] Phung, Q.N., Jorg-Andreas, D., Vector control of three-phase AC machines, Springer, Berlin– Heidelberg, 2008
[8] Tran Trong Minh, Vu Hoang Phuong, Analysis of switching patterns in space vector modulation method for Z source inverter, pp 1-6, No. 91, Journal of Science & Technology Technical Universities, 2013.
[9] N. Hoffmann, R. Lohde, M. Fischer and F. W. Fuchs, L. Asiminoaei, P.B. Thøgersen, A Review on Fundamental Grid-Voltage Detection Methods under Highly Distorted Conditions in Distributed PowerGeneration Networks, Energy Conversion Congress and Exposition (ECCE), 2011 IEEE. https://doi.org/10.1109/ECCE.2011.6064179
[10] Khalil, Nonlinear Systems, 3rd Edition, Prentice Hall, Upper Saddle River, 2002.
[11] Hebertt Sira-Ramírez and Ramón Silva-Ortigoza, Control Design Techniques in Power Electronics Devices, Springer-Verlag London Limited 2006.
[12] Product Information Sheet, Sell - SQ160, http://www.oksolar.com/pv/shell.htm.
[2] Trishan Esram, Patrick L. Chapman, Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques, IEEE Transaction of energy conversion, vol 22, no.2, June 2007. https://doi.org/10.1109/TEC.2006.874230 [3] Fang Zheng Peng, Z-source inverter, IEEE transactions on industry applications, vol.39, no.2, March/April, 2003. https://doi.org/10.1109/TIA.2003.808920
[4] Po XU, Xing ZHANG, Chong-wei ZHANG, Renxian,CAO and Liuchen CHANG, Study of Z-Source Inverter for Grid-Connected PV Systems, PESC'06 Power Electronics Specialists Conference, 2006, 37th IEEE.
[5] Xiaogao Chen, QingFu, David Infield, Shijie YU, Modeling and Control of Z-Source Grid-connected PV System with APF Function, Universities Power Engineering Conference (UPEC) 2009, Proceedings of the 44th International. [6] Antoneta Iuliana Bratcu, Iulian Munteanu, Seddik Bacha, Bertrand Raison, Maximum Power Point Tracking of Grid-connected Photovoltaic Arrays by Using Extremum Seeking Control, Journal of Control Engineering and Applied Informatics (CEAI) Vol.10 No. 4 pp. 3-12 2008.
[7] Phung, Q.N., Jorg-Andreas, D., Vector control of three-phase AC machines, Springer, Berlin– Heidelberg, 2008
[8] Tran Trong Minh, Vu Hoang Phuong, Analysis of switching patterns in space vector modulation method for Z source inverter, pp 1-6, No. 91, Journal of Science & Technology Technical Universities, 2013.
[9] N. Hoffmann, R. Lohde, M. Fischer and F. W. Fuchs, L. Asiminoaei, P.B. Thøgersen, A Review on Fundamental Grid-Voltage Detection Methods under Highly Distorted Conditions in Distributed PowerGeneration Networks, Energy Conversion Congress and Exposition (ECCE), 2011 IEEE. https://doi.org/10.1109/ECCE.2011.6064179
[10] Khalil, Nonlinear Systems, 3rd Edition, Prentice Hall, Upper Saddle River, 2002.
[11] Hebertt Sira-Ramírez and Ramón Silva-Ortigoza, Control Design Techniques in Power Electronics Devices, Springer-Verlag London Limited 2006.
[12] Product Information Sheet, Sell - SQ160, http://www.oksolar.com/pv/shell.htm.