Volume 1, Issue 1, November 2012, Pages 7–34
C. R. Balamurugan1, S. P. Natarajan2, and R. Bensraj3
1 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
2 Department of EIE, Annamalai University, Chidambaram, Tamilnadu, India
3 Department of Electrical Engineering, Annamalai University, Tamil Nadu, India
Original language: English
Copyright © 2012 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This paper presents the comparison of Unipolar Inverted Sine Carrier Pulse Width Modulation (UISCPWM) techniques for the Cascaded Multi Level Inverter (CMLI). Due to switch combination redundancies, there are certain degrees of freedom to generate the multilevel AC output voltage. This paper presents the use of Control Freedom Degree (CFD) combination. The effectiveness of the pulse width modulation strategies developed using CFD are demonstrated using simulation. The results indicate that the chosen five level inverter triggered by the developed UISC phase shift PWM and UISC variable frequency PWM strategy with sine and stepped wave references and UISC alternate phase opposition disposition PWM strategy with 60 degree reference exhibit reduced harmonics and UISC carrier overlapping PWM provides higher fundamental RMS output voltage for all three chosen references. Simulations are performed using MATLAB-SIMULINK.
Author Keywords: ISCPWM, CMLI, THD, 60 degree, FF, unipolar.
C. R. Balamurugan1, S. P. Natarajan2, and R. Bensraj3
1 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
2 Department of EIE, Annamalai University, Chidambaram, Tamilnadu, India
3 Department of Electrical Engineering, Annamalai University, Tamil Nadu, India
Original language: English
Copyright © 2012 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper presents the comparison of Unipolar Inverted Sine Carrier Pulse Width Modulation (UISCPWM) techniques for the Cascaded Multi Level Inverter (CMLI). Due to switch combination redundancies, there are certain degrees of freedom to generate the multilevel AC output voltage. This paper presents the use of Control Freedom Degree (CFD) combination. The effectiveness of the pulse width modulation strategies developed using CFD are demonstrated using simulation. The results indicate that the chosen five level inverter triggered by the developed UISC phase shift PWM and UISC variable frequency PWM strategy with sine and stepped wave references and UISC alternate phase opposition disposition PWM strategy with 60 degree reference exhibit reduced harmonics and UISC carrier overlapping PWM provides higher fundamental RMS output voltage for all three chosen references. Simulations are performed using MATLAB-SIMULINK.
Author Keywords: ISCPWM, CMLI, THD, 60 degree, FF, unipolar.
How to Cite this Article
C. R. Balamurugan, S. P. Natarajan, and R. Bensraj, “Studies on Unipolar Inverted Sine Carrier PWM Strategies for Three Phase Five Level Cascaded Inverter,” International Journal of Innovation and Applied Studies, vol. 1, no. 1, pp. 7–34, November 2012.
