High Performance Multistring Converter Topology for Three-Phase Grid Tied 200 kW Photovoltaic Generating System

Mohammad Rustam M. L.; F. Danang Wijaya

doi:10.22146/ijitee.28364

High Performance Multistring Converter Topology for Three-Phase Grid Tied 200 kW Photovoltaic Generating System

https://doi.org/10.22146/ijitee.28364

Mohammad Rustam M. L.^(1*), F. Danang Wijaya⁽²⁾

(1) Department of Electrical Engineering and Information Technology, Faculty of Engineering, Universitas Gadjah Mada
(2) Department of Electrical Engineering and Information Technology, Faculty of Engineering, Universitas Gadjah Mada
(*) Corresponding Author

Abstract

Under various external conditions, grid connected PV system performance is strongly affected by the topology that is used to connect a PV system with grid. This research aims to design a multistring based converter topology for three-phase grid connected 200 kW PV system that has a high performance in various operating conditions. Research was done by a simulation method using Matlab-Simulink with performance being evaluated including the generated power, efficiency, power quality in accordance with grid requirements, as well as the power flow. In the simulation, multistring converter topology was designed using two dc-dc boost multistring converters connected in parallel to a centralized of three-phase three-level NPC inverter with the size of the string being shorter and more parallel strings as well as the maximum voltage of the PV array of 273.5 V close to dc voltage reference of 500 V. Each dc-dc boost multistring converter have individual MPPT controllers. The simulation results showed that this multistring converter topology had a high performance in various operating conditions. This due to more power generated by the NPC inverter (> 190 kW) at the time of high power generation on the STC conditions (1000 W/m2, 25 oC), the lowest efficiency of the total system is 95.08 % and the highest efficiency of the total system is 99.4 %, the quality of the power generated in accordance with the requirements of grid, as well as the inverter put more active power to the grid and less reactive power to the grid. The response of the inverter slightly worse for loads with greater reactive power and unbalanced.

Keywords

PV array topology, power electronics converter topology, maximum power, efficiency, power quality, power flow.

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References

[1] Bo Yuan, Xu at that, Donghao Li, and Zhaoan Wang, "A new architecture for high fouling maximum power point tracking in grid-connected engineering system," IEEE 6th International Power Electronics and Motion Control Conference, 2009. IPEMC '09, vol. 10, Wuhan, May 17-20 May 2009, pp. 2504 - 2121.

[2] H. AbdEl-Gawad and Vijay K. Sood, "Overview of connection topologies for grid-connected PV systems," Canadian Conference on Electrical and Computer Engineering (CCECE), 2014 IEEE 27th, Toronto, ON, 2014, pp. 1 - 8.

[3] Chaiyant Boonmee, Pakorn Somboonkit, and Napat Watjanatepin, "Performance comparison of three-level and multi-level for Grid-connected engineering systems,"" 12th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2015, Hua Hin , 24-27 June 2015, pp. 1 - 5.

[4] Huiying Zheng, Shuhui Li, and Julio Proano, "PV energy extraction characteristic study under shading conditions for different converter configurations," 2012 IEEE Power and Energy SoCiety General Meeting, San Diego CA, 22-26 July 2012, pp. 1 - 8.

[5] Kwonyub, Hojoon Hyung Shin, Jung-Ik Ha, and Anno Yoo, "Fouling control of multi-string PV system considering switching Add with existing analysis," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, vol. , Fort Worth, TX , 16-20 March 2014, pp. 3143 - 3149.

[6] Mohammed S. Agamy et al., "Dc-dc converter topology assessment for large scale installation design distributed engineering plant architectures," 2011 IEEE Energy Conversion Congress & Exposition, Phoenix, AZ , 17-22 Sept. 2011 , pp. 764 - 769 Off-Highway Truck.

[7] S. B. Kjaer, J. K Pedersen, and F Blaabjerg, "A review of single-phase grid-connected inverters for engineering modules," IEEE Transactions on Industry Applications, vol.41, no. 5, pp. 1292-1306 , September 2005.

[8] YongLi Zhu, JianGuo Yao, and at Wu, "Comparative study of two stages and single stage topologies for grid-tie engineering generation by PSCAD/EMTDC," the International Conference on Advanced Power System Automation and Protection (APAP), 2011, vol. 2, Beijing, 16-20 OCt. 2011 , pp. 1710 - 2180.

[9] Santu Kr. Giri, Sarbani Mukherjee, and Subrata Amitava Banerjee, "Split the multistring 3-level NPC inverter engineering suitable for partially shaded conditions," Power India International Conference (PIICON), 2014 6th IEEE, Delhi , 5-7 Dec. 2014 , pp. 1 - 6.

[10] Dorai Yelaverthi Babu and Shyama P Das, "Dual multi-string PV topology fed three level grid connected inverter," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014 , Fort Worth, TX , 16-20 March 2014 , pp. 2481 - 1710.

[11] R. W. Erickson and D Maksimovic, Fundamentals of Power Electronics, 2 nd Ed.: Springer, 2000.

[12] P. Sudha Rani, K. V. S Prasadarao, and Koppineni R. N. V Subbarao, "Comparison of symmetrical and asymmetrical multilevel inverter topologies with reduced number of switches," the International Conference on Smart Electric Grid (ISEG), 2014, Thunder, 19-20 Sept. 2014, pp. 1 - 5.

[13] Panagiotis Stergiopoulos Panagis, Fotis, Pantelis Marabeas, and Stefanos Manias, "Comparison of state of the art multilevel inverters," 2008 IEEE Power Electronics Specialists. Conference, Rhodes, 15-19 June 2008, pp. 4296 - 4301.

[14] "Data Sheet Solar Panel SPR-305E-WHT-D The doCument", SunPower Corporation, September 2010.

[15] Gilbert M. Masters, Renewable and Efficient Electric Power Systems, 1 st ed., Gilbert M. Masters, Ed. Hoboken, New Jersey, USA: John Wiley & Sons, Inc., 2004.

[16] F. Chicco Batrinu, G, J Schlabbach, and F Spertino, "According of grid-connected engineering plant operation on the harmonic distortion," IEEE Mediterranean Electrotechnical Conference MELECON 2006, Malaga, 16-19 May 2006 , pp. 861 - 783.

[17] Pedro A. B. Block et al., "Power Quality Analyses of a large scale installation design Engineering System," 5th International Renewable Energy Congress (IREC), Hammamet, 25-27 March 2014, pp.1- 6.

[18] Sachin Jain and Vivek Agarwal, "A Single-Stage Grid Connected Inverter Topology for Solar PV Systems With Maximum Power Point Tracking," IEEE Transactions on Power Electronics, vol. 22, no. 5, pp. 1928 - 1940 , September 2007.

DOI: https://doi.org/10.22146/ijitee.28364