Volume 3, Issue 1, May 2013, Pages 19–34
C. R. Balamurugan1, S. P. Natarajan2, and R. Revathy3
1 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
2 Department of EIE, Annamalai University, Chidambaram, Tamilnadu, India
3 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
Original language: English
Copyright © 2013 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 various Pulse Width Modulation (PWM) strategies for the three phase Diode Clamped Multi Level Inverter (DCMLI). The main contribution of this paper is the proposal of new modulation schemes with Variable Amplitude (VA) and various new schemes adopting the constant switching frequency and also variable switching frequency multicarrier control freedom degree combination concepts are developed and simulated for the chosen three phase DCMLI. The three phase DCMLI, is controlled in this paper with Sinusoidal PWM (SPWM) reference along with triangular carriers and analysis is made among both without carrier overlapping and with Carrier Overlapping (CO) techniques to choose the better strategy by performing simulation using MATLAB-SIMULINK. The variation of Total Harmonic Distortion (THD) and fundamental RMS output voltage is observed for various modulation indices. It is observed that among the various equal amplitude PWM strategies, COPWM-C provides less THD and higher RMS voltage. It is recognized that among the various variable amplitude PWM strategies, VACOPWM-C provides less THD and VACOPWM-B provides higher RMS voltage. By comparing the equal amplitude PWM strategies with the variable amplitude PWM strategies it is inferred that VACOPWM-C provides less THD and VACOPWM-B provides higher RMS voltage. It is also inferred that carrier overlapping techniques provides better results compared to the without carrier overlapping techniques.
Author Keywords: SPWM, DCMLI, THD, COPWM.
C. R. Balamurugan1, S. P. Natarajan2, and R. Revathy3
1 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
2 Department of EIE, Annamalai University, Chidambaram, Tamilnadu, India
3 Department of EEE, Arunai Engineering College, Tiruvannamalai, Tamilnadu, India
Original language: English
Copyright © 2013 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 various Pulse Width Modulation (PWM) strategies for the three phase Diode Clamped Multi Level Inverter (DCMLI). The main contribution of this paper is the proposal of new modulation schemes with Variable Amplitude (VA) and various new schemes adopting the constant switching frequency and also variable switching frequency multicarrier control freedom degree combination concepts are developed and simulated for the chosen three phase DCMLI. The three phase DCMLI, is controlled in this paper with Sinusoidal PWM (SPWM) reference along with triangular carriers and analysis is made among both without carrier overlapping and with Carrier Overlapping (CO) techniques to choose the better strategy by performing simulation using MATLAB-SIMULINK. The variation of Total Harmonic Distortion (THD) and fundamental RMS output voltage is observed for various modulation indices. It is observed that among the various equal amplitude PWM strategies, COPWM-C provides less THD and higher RMS voltage. It is recognized that among the various variable amplitude PWM strategies, VACOPWM-C provides less THD and VACOPWM-B provides higher RMS voltage. By comparing the equal amplitude PWM strategies with the variable amplitude PWM strategies it is inferred that VACOPWM-C provides less THD and VACOPWM-B provides higher RMS voltage. It is also inferred that carrier overlapping techniques provides better results compared to the without carrier overlapping techniques.
Author Keywords: SPWM, DCMLI, THD, COPWM.
How to Cite this Article
C. R. Balamurugan, S. P. Natarajan, and R. Revathy, “Analysis of Control Strategies for Diode Clamped Multilevel Inverter,” International Journal of Innovation and Applied Studies, vol. 3, no. 1, pp. 19–34, May 2013.
