This paper presents advances in pulse width modulation techniques which refers to a method of carrying information on train of pulses and the information be encoded in the width of pulses. Pulse Width Modulation is used to control the inverter output voltage. This is done by exercising the control within the inverter itself by adjusting the ON and OFF periods of inverter. By fixing the DC input voltage we get AC output voltage. In variable speed AC motors the AC output voltage from a constant DC voltage is obtained by using inverter. Recent developments in power electronics and semiconductor technology have lead improvements in power electronic systems. Hence, different circuit configurations namely multilevel inverters have became popular and considerable interest by researcher are given on them. A fast space-vector pulse width modulation (SVPWM) method for five-level inverter is also discussed. In this method, the space vector diagram of the five-level inverter is decomposed into six space vector diagrams of three-level inverters. In turn, each of these six space vector diagrams of three-level inverter is decomposed into six space vector diagrams of two-level inverters. After decomposition, all the remaining necessary procedures for the three-level SVPWM are done like conventional two-level inverter. The proposed method reduces the algorithm complexity and the execution time. It can be applied to the multilevel inverters above the five-level also. The experimental setup for three-level diode-clamped inverter is developed using TMS320LF2407 DSP controller and the experimental results are analyzed.<\/p>\r\n","references":"[1]\tY. Liu, X. Wu, L. Huang, Implementation of three level inverter using a novel Space vector modulation 342 The European Physical Journal Applied Physics algorithm, Proc. IEEE Conf. on Power System Technology, Power Con 2002, 13\u201317 Oct. 2002, Vol.1, pp. 606\u2013610.\r\n[2]\tS. Wei, B. Wu, A General space vector PWM control algorithm for multilevel inverters, Eighteenth Annual IEEE on Applied Power Electronics Conference and Exposition, APEC\u201903, 9\u201313 Feb. 2003, Vol. 1, pp. 562\u2013568\r\n[3]\tM.M. Prats, R. Portillo, J.M. Carrasco, L.G. Franquelo, New fast space-vector modulation for multilevel converters based on geometrical considerations, 28th Annual Conference of the Industrial Electronics Society,IECON\u201902, 5\u20138 Nov. 2002, Vol. 4, pp. 3134\u20133138\r\n[4]\tG.S. Perantzakis, F.H. Xepapas, S.N. Manias, Efficient predictive current control technique for multilevel voltage source inverters, Proc. 11th EPE European Conference on Power Electronics and Applications, Dresden, 2005\r\n[5]\tDjaafer Lalili, Nabil Lourci, El madjid Berkouk, Fares Boudjema and J. Petzold- Simplified Space Vector Pulse width Modulation Algorithm for Three Level Inverter with Neutral Point Potential Control\u201d-Research Journal of Applied Sciences 1 (1-14):19-25,Medwell Online (2006)\r\n[6]\tJae Hyeong Seo, Member, IEEE, Chang Ho Choi, Member, IEEE, and Dong Seok Hyun, Senior Member, IEEE- \"A New Simplified Space\u2013Vector PWM Method for Three-Level Inverters\u201d - IEEE Transactions on Power Electronics, vol. 16, no. 4, July 2001\r\n[7]\tD. Lalili, E.M. Berkouk, F. Boudjema, N. Lourci, T. Taleb, and J. Petzold- Simplified Space vector PWM method for five-level inverter - Eur. Phys. J. Appl. Phys. 40, 335\u2013342 EDP Sciences (2007) The European Physical Journal Applied Physics -13 December 2007\r\n[8]\tA.M. Trzynadlowski, The field orientation principle in control of induction motors (Kluwer Academic Publishers, 1994), ISBN: 0-7923-9420-8\r\n[9]\tB.P. McGrath, Donald.G.Holmes, Thomas Lipo, \"Optimised Space Vector switching sequences for Multilevel inverters\u201d, IEEE Transactions on Power Electronics, vol.18,No.6, November 2003, pp 1293-1301.\r\n[10]\tA.K.Gupta and A.M.Khabadkone \" A General Space Vector PWM Algorithm for Multilevel Inverters, Including Operation in Over modulation Range\u201d, IEEE Transactions on Power Electronics, vol.22, No.2, March 2007, pp517-526\r\n[11]\tR.S.Kanchan, M.R.Baiju, K.K.Mohapatra, P.P.Ouseph and K.Gopa Kumar, \" Space vector PWM signal generation for Multilevel Inverters using only sampled amplitudes of reference phase voltages\u201d, Proc.IEE, vol.152, No.2, March 2005, pp297-309.\r\n[12]\tP.F. Seixas, M.A. Severo Mendes, P.Donoso Garia, A.M.N.Lima, \"A Space Vector PWM Method for Three-Level Voltage Source Inverters\u201d, Proc. APEC, vol.1, 2000, pp 549-555.\r\n","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 87, 2014"}