A Novel Concept of a Single-Phase Cascaded H-Bridge Multilevel Inverter for Grid-Connected Photovoltaic Systems
Main Article Content
Abstract
A single-phase cascaded H-bridge multilevel inverter has several DC links that allows the system to have the capability of independently voltage control to track the maximum power point in each string connected to each H-bridge. This characteristic can increase the efficiency of the PV system in case of mismatch in the strings, due to unequal solar radiation and temperature. This paper presents a generalized design method for controllers of a multi-loop control scheme applying for grid-connected photovoltaic systems using a single-phase cascaded H-bridge multilevel inverter. The simulation results were carried out by Matlab/Simpower Systems to validate the proposed method under different operating conditions of PV.
Keywords
Cascaded H-bridge multilevel inverter, Grid-connected photovoltaic systems, A multi-loop control scheme
Article Details
References
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[8] Farhadi Kangarłu, M., Babaei, E., Blaabjerg, F. An LCL-filtered Single-phase Multilevel Inverter for Grid Integration of PV Systems. Journal of Operation and Automation in Power Engineering. 2016; 4(1): 54-65.
[9] Chen, K.C. & Salimin, S & Zulkifli, S.A. & Aziz, R. (2017). Single phase inverter system using proportional resonant current control. International Journal of Power Electronics and Drive Systems. 8. 1913-1918. 10.11591/ijpeds.v8i4.pp1913-1918.
[10] Daniel Zammit, Cyril Spiteri Staines, Maurice Apap, John Licari, Design of PR current control with selective harmonic compensators using Matlab, Journal of Electrical Systems and Information Technology, Volume 4, Issue 3, 2017, Pages 347-358, ISSN 2314-7172, https://doi.org/10.1016/j.jesit.2017.01.003.
[11] Zhang, Ningyun & Tang, Houjun & Yao, Chen. (2014). A Systematic Method for Designing a PR Controller and Active Damping of the LCL Filter for Single-Phase Grid-Connected PV Inverters. Energies. 7. 3934-3954. 10.3390/en7063934.
[12] A. Dell'Aquila, M. Liserre, V. G. Monopoli and P. Rotondo, Overview of PI-Based Solutions for the Control of DC Buses of a Single-Phase H-Bridge Multilevel Active Rectifier, in IEEE Transactions on Industry Applications, vol. 44, no. 3, pp. 857-866, May-June 2008.
[13] T. Esram and P. L. Chapman, Comparison of photovoltaic array maximum power point tracking techniques, IEEE Trans. Energy Convers., vol. 22, no. 2, pp. 439-449, Jun. 2007.
[14] Remus Teodorescu, Marco Liserre, Pedro Rodriguez Grid Converters for Photovoltaic and Wind Power Systems, 2011 John Wiley & Son, Ltd.
[2] E. Villanueva, P. Correa, J. Rodriguez and M. Pacas, Control of a Single-Phase Cascaded H-Bridge Multilevel Inverter for Grid-Connected Photovoltaic Systems, in IEEE Transactions on Industrial Electronics, vol. 56, no. 11, pp. 4399-4406, Nov. 2009.
[3] Bailu Xiao, Ke Shen, Jun Mei, Faete Filho, Leon M. Tolbert, Control of Cascaded H-Bridge Multilevel Inverter with Individual MPPT for Grid-Connected Photovoltaic Generators, 2012 IEEE Energy Conversion Congress and Exposition (ECCE), 15-20 Sept. 2012, pp. 3715 – 3721.
[4] Chao Ma, Jing Wu, Ning Li*, Shaoyuan Li, Control of Single-Phase CHB Grid-Connected Photovoltaic System Under Non-Uniform Irradiation Conditions, 3rd IFAC International Conference on Intelligent Control and Automation Science.September 2-4, 2013. Chengdu, China
[5] C. Boonmee and Y. Kumsuwan, Control of single-phase cascaded H-bridge multilevel inverter with modified MPPT for grid-connected photovoltaic systems, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, Vienna, 2013, pp. 566-571.
[6] Sandeep. N, Udaykumar R.Y, Single-Phase Seven-Level Grid-Connected Photovoltaic System with Ripple Correlation Control Maximum Power Point Tracking, INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH, Vol.6, No.4, 2016.
[7] T. Lahlou, M. Abdelrahem, S. Valdes and H. G. Herzog, Filter design for grid-connected multilevel CHB inverter for battery energy storage systems, 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Anacapri, 2016, pp. 831-836.
[8] Farhadi Kangarłu, M., Babaei, E., Blaabjerg, F. An LCL-filtered Single-phase Multilevel Inverter for Grid Integration of PV Systems. Journal of Operation and Automation in Power Engineering. 2016; 4(1): 54-65.
[9] Chen, K.C. & Salimin, S & Zulkifli, S.A. & Aziz, R. (2017). Single phase inverter system using proportional resonant current control. International Journal of Power Electronics and Drive Systems. 8. 1913-1918. 10.11591/ijpeds.v8i4.pp1913-1918.
[10] Daniel Zammit, Cyril Spiteri Staines, Maurice Apap, John Licari, Design of PR current control with selective harmonic compensators using Matlab, Journal of Electrical Systems and Information Technology, Volume 4, Issue 3, 2017, Pages 347-358, ISSN 2314-7172, https://doi.org/10.1016/j.jesit.2017.01.003.
[11] Zhang, Ningyun & Tang, Houjun & Yao, Chen. (2014). A Systematic Method for Designing a PR Controller and Active Damping of the LCL Filter for Single-Phase Grid-Connected PV Inverters. Energies. 7. 3934-3954. 10.3390/en7063934.
[12] A. Dell'Aquila, M. Liserre, V. G. Monopoli and P. Rotondo, Overview of PI-Based Solutions for the Control of DC Buses of a Single-Phase H-Bridge Multilevel Active Rectifier, in IEEE Transactions on Industry Applications, vol. 44, no. 3, pp. 857-866, May-June 2008.
[13] T. Esram and P. L. Chapman, Comparison of photovoltaic array maximum power point tracking techniques, IEEE Trans. Energy Convers., vol. 22, no. 2, pp. 439-449, Jun. 2007.
[14] Remus Teodorescu, Marco Liserre, Pedro Rodriguez Grid Converters for Photovoltaic and Wind Power Systems, 2011 John Wiley & Son, Ltd.