Staircase multicarrier SPWM technique for nine level cascaded inverter

In this paper, novel pulse width modulation technique which use staircase carrier waveform is proposed for nine level cascaded inverter. In staircase carrier waveform, different techniques such as phase disposition (PD), inverted phase disposition (IPD), phase opposition disposition (POD) and alternative phase opposition disposition (APOD) are implemented. The fundamental output voltage and harmonics obtained in each method are compared with the output waveform obtained with the triangular carrier waveform. The proposed switching technique enhances the fundamental component of the output voltage and improves total harmonic distortion. The different PWM methodologies adopting the constant switching frequency multicarrier are simulated for a 1KW, 3φ inverter using MATLAB/SIMULINK. The effect of switching frequency on the fundamental output voltage and harmonics are also analyzed.

[1]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[2]  P. Bhagwat,et al.  Generalized Structure of a Multilevel PWM Inverter , 1983, IEEE Transactions on Industry Applications.

[3]  F. S. Merwe,et al.  Voltage harmonics generated by voltage-fed inverters using PWM natural sampling , 1988 .

[4]  G. Sciutto,et al.  A new multilevel PWM method: a theoretical analysis , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[5]  Thierry Meynard,et al.  Modeling of multilevel converters , 1997, IEEE Trans. Ind. Electron..

[6]  D. J. Adams,et al.  A power line conditioner using cascade multilevel inverters for distribution systems , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[7]  L.M. Tolbert,et al.  Novel multilevel inverter carrier-based PWM methods , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[8]  D.G. Holmes,et al.  Opportunities for harmonic cancellation with carrier based PWM for two-level and multi-level cascaded inverters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[9]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..

[10]  Frede Blaabjerg,et al.  Multilevel inverter by cascading industrial VSI , 2002, IEEE Trans. Ind. Electron..

[11]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[12]  Holmes,et al.  Pulse width modulation for power converters , 2003 .

[13]  Seung-Ki Sul,et al.  A carrier-based PWM method for three-phase four-leg voltage source converters , 2004, IEEE Transactions on Power Electronics.

[14]  S.M. Ayob,et al.  Trapezoidal PWM Scheme for Cascaded Multilevel Inverter , 2006, 2006 IEEE International Power and Energy Conference.

[15]  P. Panagis,et al.  Comparison of state of the art multilevel inverters , 2008, 2008 IEEE Power Electronics Specialists Conference.

[16]  S. Kouro,et al.  Multicarrier PWM With DC-Link Ripple Feedforward Compensation for Multilevel Inverters , 2008, IEEE Transactions on Power Electronics.

[17]  C. Govindaraju,et al.  Optimized Hybrid Phase Disposition PWM Control Method for Multilevel Inverter , 2009 .

[18]  P. Renuga,et al.  Multi Carrier PWM based Multi Level Inverter for High Power Application , 2010 .

[19]  Mariusz Malinowski,et al.  A Survey on Cascaded Multilevel Inverters , 2010, IEEE Transactions on Industrial Electronics.