International Journal of Scientific Engineering and Technology

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An Efficient Diode Clamped Multilevel Inverter for Reducing THD with Selective Harmonic Elimination Pulse Width Modulation (SHEPWM)


Affiliations
1 Balochistan University of Information Technology, Engineering and Management Sciences, Pakistan
2 COMSATS IIT, Abbottabad Campus, KPK, Pakistan
 

Selective harmonic elimination pulse width modulation (SHEPWM) technique is applied to diode clamped multi-level inverter (DCMLI) to reduce total harmonic distortion (THD) and improve the quality of output power. The modulation technique is implemented centered on dog leg optimization method to find the optimized values for switching angles (θ) of switches (IGBTs) employed. Twelve level diode clamped inverter is implemented in Matlab and the results are compared with non-optimized switching angles also 5-level DCMLI using SHEPWM is compared with other modulation techniques.

Keywords

DCMLI, Dog Leg Method SHEPWM, Switching Angles, THD.
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  • An Efficient Diode Clamped Multilevel Inverter for Reducing THD with Selective Harmonic Elimination Pulse Width Modulation (SHEPWM)

Abstract Views: 170  |  PDF Views: 0

Authors

M. Abbas Khan
Balochistan University of Information Technology, Engineering and Management Sciences, Pakistan
Haider Ali
COMSATS IIT, Abbottabad Campus, KPK, Pakistan
Syed Nouman Shah
COMSATS IIT, Abbottabad Campus, KPK, Pakistan

Abstract


Selective harmonic elimination pulse width modulation (SHEPWM) technique is applied to diode clamped multi-level inverter (DCMLI) to reduce total harmonic distortion (THD) and improve the quality of output power. The modulation technique is implemented centered on dog leg optimization method to find the optimized values for switching angles (θ) of switches (IGBTs) employed. Twelve level diode clamped inverter is implemented in Matlab and the results are compared with non-optimized switching angles also 5-level DCMLI using SHEPWM is compared with other modulation techniques.

Keywords


DCMLI, Dog Leg Method SHEPWM, Switching Angles, THD.