Informatics Publishing Limited

M. Abbas Khan ¹, Haider Ali ², Nouman Shah ², M. Tariq

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

Abstract

DSTATCOM is a custom power device that is used to regulate the voltage sags/swells in the distribution system for maintaining the rated voltage level at the terminal of load/sensitive loads. The DSTATCOM can inject three-phase voltages at point of common coupling whose magnitude and phase angle can be regulated with PI controller, while the super capacitors are used to meet the instantaneous power demand since they can store and quickly release significant amounts of energy. This paper explores the use of Super capacitors in DSTATCOM in place of battery for control of load terminal voltage.

Keywords

DSTATCOM, Super Capacitor, FLL, Regulation.

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M. Abbas Khan ¹, Haider Ali ², Syed Nouman Shah ², M. Tariq

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

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.

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