Fuzzy Logic Based Cascaded H-Bridge Eleven Level Inverter for Photovoltaic System Using Sinusoidal Pulse Width Modulation Technique

Multilevel inverter is a promising inverter topology for high voltage and high power applications. This inverter synthesizes several different levels of DC voltages to produce a stepped AC output that approaches the pure sine waveform. The three different topologies, diode-clamped inverter, capacitor-clamped inverter and cascaded h-bridge multilevel inverter are widely used in these multilevel inverters. Among the three topologies, cascaded h-bridge multilevel inverter is more suitable for photovoltaic applications since each PV array can act as a separate dc source for each h-bridge module. This research especially focus on photovoltaic power source as input to the system and shows the potential of a Single Phase Cascaded H-bridge Eleven level inverter governed by the fuzzy logic controller to improve the power quality by reducing the total harmonic distortion at the output voltage. Hence the efficiency of the system will be improved. Simulation using MATLAB/SIMULINK has been done to verify the performance of cascaded h-bridge eleven level inverter using sinusoidal pulse width modulation technique. The simulated output shows very favorable result.





References:
[1] Juan Manuel Carrasco, Leopoldo Garcia Franquelo, "Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey”, IEEE Transactions on Power Electronics, Vol.53, No.4, pp 1002-1016, Aug 2006.
[2] Jeyraj Selvaraj and Nasrudin Rahim A, "Multilevel Inverter for Grid- Connected PV System Employing Digital PI Controller”, IEEE Transactions on Power Electronics, Vol.56, No.1, pp 149-158, Jan 2009.
[3] Bakhshai.A, Jain.P and, Khajehoddi, "The application of the cascaded multilevel converters in grid connected photovoltaic systems,” In Proc. IEEE Epc, Montreal, Qc,Canada. July 2007.
[4] M. Tolbert, F. Z. Peng, T. G. Habetler, 1999,"Multilevel converters for large electric drives,” IEEE Transactions on Industry Applications, vol. 35, no. 1, pp. 36-44.
[5] F .T. Josh, Jovitha Jerome, and J. Arulwilson, 2013,” Fuzzy Logic based nine level Inverter for photovoltaic systems”, European Journal of Scientific Research,Vol.78 ,No.3, pp.522-533.
[6] L. G. Franquelo, J. Rodriguez, J. I. Leon, S. Kouko, R. Portillo, and M. A. M. Prats, "The age of multilevel converters arrives,” IEEE Ind. Electron. Mag., vol. 2, no. 2, pp. 28–39, Jun. 2008.
[7] S. B. Kjaer, J. K. Pedersen, and F. Blaabjerg, "A review of single phase grid-connected inverters for photovoltaic modules,” IEEE Trans. Ind. Appl., vol. 41, no. 5, pp. 1292–1306, Sep./Oct. 2005.
[8] F. S. Kang, S. J. Park, S. E. Cho, C. U. Kim, and T. Ise, "Multilevel PWM inverters suitable for the use of stand-alone photovoltaic power grid-connected inverters for photovoltaic modules,” IEEE Trans. Energy Convers., vol. 20, no. 4, pp. 906– 915, Dec. 2005.
[9] Jose Rodriguez, Jin-Sheng Lai and Fang Zheng, 2002, "Multi level Inverters: A survey of topologies, Control applications,” IEEE transactions on Industrial Electronics, Vol.49, No. 4, pp. 724-738.
[10] Carlo Cecati, Fabrizio Ciancetta, Pierluigi Siano, "A Multilevel Inverter for Photovoltaic Systems with Fuzzy Logic Control”, IEEE Trans. Ind. Electron., vol. 57, no. 12, pp. 4115 –4125, Dec. 2010.