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Comparative Performance of Carrier Based PWM Schemes for Single Star Bridge Cell (SSBC) Configuration

Journal: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) (Vol.10, No. 3)

Publication Date:

Authors : ; ;

Page : 9083-9092

Keywords : PWM (Pulse Width Modulation); MLI; CHB (Cascaded H-Bridge); Level Shifted PWM (LSPWM); APOD (Alternate Phase Opposition Disposition); IPOD (In Phase Opposition Disposition); OPD (Opposite Phase Disposition); THD (Total Harmonic Distortion);

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A reliable and economical power converter is a pre-requisite for various commercial and industrial applications such as Energy storage, Grid connected-PV/Renewable system, Adjustable speed drives, Power quality (custom power devices), HVDC and Transportation applications. Further with the development/fabrication of advanced self-communicating devices, Multilevel Inverters (MLIs) emerged as reliable and effective power converter for applications of high power. The popular modular configuration is the Cascaded H-Bridge MLI in the present era. On the other hand, among the various control techniques reported for MLIs, Sinusoidal PMW techniques are most popular and easier practiced techniques. As MLIs and SPWM are being very popular and tremendously used in research, enlightenment on their design, implementation and control with various Sinusoidal PWM techniques is deriving key of the current times. Hence in this paper, implementation of CHB-MLI for generalized level, with various carrier based PWM (LSPWM-IPD, OPD, APD, AND PSPWM) techniques is presented, and converter phase and line voltage harmonic performance with various carrier arrangements is evaluated for variation in level numbers and modulation index of amplitude (ma). Also, the effect of frequency modulation index on harmonic spectrum is discussed in detail, and obtained results are validates on the MATLAB

Last modified: 2020-11-18 19:35:58