Mehmet UÇAR, Engin OZDEMİR, Ahmet AKTAŞ, Serkan SEZEN

Design and operation of a multifunction photovoltaic power system with shunt active ltering using a single-stage three-phase multilevel inverter

In this paper, the control of a multifunction grid-connected photovoltaic (PV) system with a three-phase three- level (3L) neutral point clamped (NPC) inverter is proposed, which can perform shunt active ltering. Normally, the shunt active ltering is achieved by detecting the harmonic and reactive currents of the nonlinear load and then injecting the compensating current into the grid. Therefore, the proposed system can inject PV power to a grid with power factor correction and current harmonic ltering features simultaneously. In addition, a single-stage compact and efficient transformerless power conversion topology is used in this paper for the grid-connected solar PV system with maximum power point tracking capability. In order to control the multilevel inverter-based combined system, a synchronous reference frame control technique and hysteresis current control pulse width modulation method have been applied. The system con guration and control strategy are veri ed and validated by simulations based on MATLAB/Simulink and implemented in real-time using the dSPACE DS1103 controller board. The simulation with experimental results indicates that the injected currents are sinusoidal and current total harmonic distortion is about 3.9%, lower than the IEEE 519 harmonic limit.

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[1] Teodorescu R, Liserre M, Rodriguez P. Grid Converters for Photovoltaic and Wind Power Systems. Hoboken, NJ, USA: Wiley-IEEE Press, 2011.
[2] Deutsche Gesellschaft fur Sonnenenergie. Planning and Installing Photovoltaic Systems{A Guide for Installers, Architects and Engineers. 2nd ed. London, UK: Earthscan, 2008.
[3] Wang F, Duarte JL, Hendrix MAM. Grid-interfacing converter systems with enhanced voltage quality for microgrid application - concept and implementation. IEEE T Power Electr 2011; 26: 3501-3513.
[4] Abbasoglu S, Babatunde AA. Evaluation of eld data and simulation results of a photovoltaic system in countries with high solar radiation. Turk J Elec Eng & Comp Sci 2015; 23: 1608-1618.
[5] Esram T, Chapman PL. Comparison of photovoltaic array maximum power point tracking techniques. IEEE T Energy Conver 2007; 22: 439-449.
[6] Brito MAG, Galotto L, Sampaio LP, Melo GA, Canesin CA. Evaluation of the main MPPT techniques for photovoltaic applications. IEEE T Ind Electron 2013; 60: 1156-1167.
[7] Subudhi B, Pradhan R. A comparative study on maximum power point tracking techniques for photovoltaic power systems. IEEE T Sustain Energ 2013; 4: 89-98.
[8] Bo Y, Wuhua L, Yi Z, Xiangning H. Design and analysis of a grid connected photovoltaic power system. IEEE T Power Electr 2010; 25: 992-1000.
[9] Tsang KM, Chan WL. Three-level grid-connected photovoltaic inverter with maximum power point tracking. Energ Convers Manage 2013; 65: 221-227.
[10] Sezen S, Ozdemir E. Modeling, simulation and control of three-phase three level multilevel inverter for grid connected photovoltaic system. J Optoelectron Adv M 2013; 15: 335-341.
[11] Ozdemir S, Altin N, Sefa I. Single stage three level grid interactive MPPT inverter for PV systems. Energ Convers Manage 2014; 80: 561-572.
[12] Colak I, Kabalci E, Bayindir R. Review of multilevel voltage source inverter topologies and control schemes. Energ Convers Manage 2011; 52: 1114-1128.
[13] Staudt I. Application Note AN-11001. 3L NPC & TNPC Topology. Nuremburg, Germany: Semrikon, 2012.
[14] Calleja H, Jimenez H. Performance of a grid connected PV system used as active lter. Energ Convers Manage 2004; 45: 2417-2428.
[15] Yu H, Pan J, Xiang A. A multi-function grid-connected PV system with reactive power compensation for the grid. Sol Energy 2005; 79: 101-106.
[16] Wu TF, Nien HS, Hsieh HM, Shen CL. PV power injection and active power ltering with amplitude-clamping and amplitude scaling algorithms. IEEE T Ind Appl 2007; 43: 731-741.
[17] Du CS, Zhang CH, Chen A. Amplitude limiting for the photovoltaic (PV) grid-connected inverter with the function of active power lter. In: IEEE 2010 2nd International Symposium on Power Electronics for Distributed Generation Systems; 16{18 June 2010; Hefei, China. New York, NY, USA: IEEE. pp. 426-432.
[18] Albuquerque FL, Moraes AJ, Guimaraes GC, Sanhueza SMR, Vaz AR. Photovoltaic solar system connected to the electric power grid operating as active power generator and reactive power compensator. Sol Energy 2010; 84: 1310-1317.
[19] Tsengenes G, Adamidis G. Investigation of the behavior of a three-phase grid-connected photovoltaic system to control active and reactive power. Electr Pow Syst Res 2011; 81: 177-184.
[20] Tsengenes G, Adamidis G. A multi-function grid connected PV system with three level NPC inverter and voltage oriented control. Sol Energy 2011; 85: 2595-2610.
[21] Marcos VM, Cadaval ER, Martinez MAG, Montero MIM. Three-phase single stage photovoltaic inverter with active ltering capabilities. In: IEEE 2012 38th Annual Conference on IEEE Industrial Electronics Society; 25{28 October 2012; Montreal, Canada. New York, NY, USA: IEEE. pp. 5253-5258.
[22] Noroozian R, Gharehpetian GB. An investigation on combined operation of active power lter with photovoltaic arrays. Int J Elec Power 2013; 46: 392-399.
[23] Zhou J, Liu M, Wei C, Gao C, Wu X. New three-dimensional space vector pulse width modulation of PV-AF system based on the gh coordinate system. Turk J Elec Eng & Comp Sci 2015; 23: 2017-2029.
[24] Martinez JA, Garcia JE, Arnaltes S. Direct power control of grid connected PV systems with three level NPC inverter. Sol Energy 2010; 84: 1175-1186.
[25] Suroso, Noguchi T. A new three-level current-source PWM inverter and its application for grid connected power conditioner. Energ Convers Manage 2011; 51: 1491-1499.
[26] Marei MI, Abdelaziz M, Assad AM. A simple adaptive control technique for shunt active power lter based on clamped-type multilevel inverters. Consumer Electronics Times 2013; 2: 85-95.
[27] Kale M, Ozdemir E. A new hysteresis band current control technique for a shunt active lter. Turk J Elec Eng & Comp Sci 2015; 23: 654-665.
[28] Sezen S, Aktas A, Ucar M, Ozdemir E. A three-phase three-level NPC inverter based grid-connected photovoltaic system with active power ltering. In: IEEE 2014 16th International Power Electronics and Motion Control Conference and Exposition; 21{24 September 2014; Antalya, Turkey. New York, NY, USA: IEEE. pp. 1572-1576.
[29] Ucar M, Ozdemir S, Ozdemir E. A uni ed series-parallel active lter system for nonperiodic disturbance. Turk J Elec Eng & Comp Sci 2011; 19: 575-596.