Selective Harmonic Elimination Technique With Control of Capacitive DC- Link Voltages in an Asymmetric Cascaded H-Bridge Inverter for STATCOM Application

ABSTRACT:

In this project, the selective harmonic elimination (SHE) system is presented for a fell H-connect based static VAR compensator (CHB-STATCOM) with unequal capacitive dc-interface voltages. The asymmetric topology permits expanding the quantity of voltage levels while keeping the converter misfortunes low. In addition, responsive power control is acknowledged by utilizing the decoupled current control, and the voltage of individual capacitors is controlled by the assistance of SHE adjustment. Scientific conditions are determined for blending the staggered ac waveform and direction of dc-interface voltages for a CHB inverter with a self-assertive number of H-connect cells. At that point, to check the hypothetical cases, reproduction and trial results are accommodated a three-stage CHB inverter with two H-connect cells in each stage.

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