The main contribution of the paper is the proposal of Fuzzy Logic Controller (FLC) for three phase transformerless neutral point clamped inverters to eliminate harmonics in photovoltaic systems without requiring any modification on the multilevel inverter or any additional hardware. Multilevel level inverter technology has been widely used in the high power Medium voltage energy control systems [1]. In this paper, the authors have proposed a Fuzzy Logic Controller for three phase neutral point clamped inverter with PV system. They have used the neutral point clamped inverter in this paper because NPC inverter results in the low frequency voltage harmonics in the NP, which is the point between the two DC-link capacitors [7]. In primary side, PV system eliminates the harmonics by using the FLC, and the voltage controller is to produce regulated output voltage with low distortions under all loading conditions. A Fuzzy Logic Controller is developed by using MATLAB/SIMULINK for the chosen inverter having applications in the PV system. FLC is found to have better performance. This paper presents a methodology to generate gating signal to control NPCVSI using MATLAB/SIMULINK.

Neutral Point Clamped Inverter, Photovoltaic System, LC Filter, Fuzzy Logic Control.
How to Cite this Article?
Romi Choudhary and A. N. Tiwari (2016). Fuzzy Logic Controller for Three Phase Neutral Point Clamped Inverter with PV System. i-manager’s Journal on Circuits and Systems, 4(4) Sep-Nov, 2016 Print ISSN 2321-7502, E-ISSN 2322-035X, pp. 6-11.
[1]. Marcelo C. Cavalcanti, Alexandre M. Farias, C. Oliveira, Francisco A.S. Neves, and João L. Afonso, (2012). “Eliminating Leakage Currents in Neutral Point Clamped Inverters for Photovoltaic Systems”. IEEE Transactions on Industrial Electronics, Vol. 59, No. 1, pp. 435-443.
[2]. P.T. Stephy, and A. Anbarasan, (2014). “PV System with Neutral Point Clamped Inverter for Suppression of Leakage Current and Harmonics based Fuzzy Controller ”. International Journal of Advanced Engineering Research and Science (IJAERS). Vol. 1, No. 6, pp. 36-41.
[3]. Chennai Salim, and Benchouia Mohamed Toufik, (2014). “Three-level (NPC) Shunt Active Power Filter Performances based on Fuzzy Controller for Harmonic Currents Compensation under Non-Ideal Voltage Conditions”. International Journal on Electrical Engineering and Informatics, Vol. 6, No. 2, pp. 342-358.
[4]. S.B. Kjaer, J.K. Pedersen, and F. Blaabjerg, (2002). “Power inverter topologies for photovoltaic modules – A review”. IEEE Proc. of the 37th Annual Industry Application Conference (IAS'02), Vol. 2, pp. 782-788.
[5]. R. Skandari, A. Rahmati, A. Abrishamifar, and E. Abiri, (2006). “A Fuzzy Logic Controller for Direct Power Control of PWM Rectifiers with SVM”. IEEE Conf. PEDES’06, pp. 1-5.
[6]. J. Huang, A. Zhang, H. Zhang, and J. Wang, (2011). “A Novel Fuzzy-Based and Voltage-Oriented Direct Power Control Strategy for Rectifier”. IEEE Conf. IECon, pp. 1115- 1119.
[7]. S. Ogasawara, and H. Akagi, (2013). “Analysis of variation of neutral point potential in neutral point clamped voltage source PWM inverters”. Proc. IEEE Industry Appl. Society Annual Meeting IAS, Toronto, Ontario, Canada, pp. 965-970.
[8].Carlo Cecati, Fabrizio Ciancetta, and Pierluigi Siano, (2010). “A Multilevel Inverter for Photovoltaic System with Fuzzy Logic Control”. IEEE Transactions on Industrial Electronics, Vol. 57, No. 12, pp. 4115-4125.
[9]. Poh Chiang Loh, Feng Gao, and Frede Blaabjerg, (2008). “Topological and Modulation Design of Three-Level Z-Source Inverters”. IEEE Transactions on Power Electronics, Vol. 23, No. 5, pp. 2268-2277.
[10]. Ning-Yi Dai, Man-Chung Wong, and Ying- Duo Han, (2006). “Application of a Three-level NPC Inverter as a Three- Phase Four-Wire Power Quality Compensator by Generalized 3DSVM”. IEEE Transactions on Power Electronics, Vol. 21, No. 2, pp. 440-449.
[11]. Azuki Abdul Salam, et al., (2013). “Fuzzy Logic Controller for Photovoltaic Generation System in Islanding Mode Operation”. International Conference on Artificial Intelligence in Computer Science and ICT (AICS 2013), pp. 81-88.
[12]. Y.M. Kazerani, and V. Quintana, (2003). “Modeling, control and implementation of three-phase PWM converters”. IEEE Trans. Power Electron., Vol. 18, No. 3, pp. 857–864.
[13]. Harish Suryanarayana, and Mahesh K. Mishra, (2008). “Fuzzy logic based supervision of DC link PI control in a DSTATCOM”. IEEE India Conference 2008, Vol. 2, pp. 453- 458.
[14]. A. Kocalmis, and S. Sunter, (2006). “Modeling and simulation of multilevel inverter using space vector modulation technique”. 3rd Int. Conf. on Technical and Physical Problems in Power Engineering (TPE-2006), Ankara, Turkey, pp. 940-943.
[15]. M. Liserre, A. Pigazo, A. Dell'Aquila, and V.M. Moreno, (2006). “An Anti-islanding method for single-phase inverters based on a grid voltage sensorless control”. IEEE Trans. Ind. Electron., Vol. 53, No. 5, pp. 1418–1426.
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