In this paper the design of a DSTATCOM employing a Seven-Level Cascaded H-Bridge Multilevel Inverter (CHBMLI) in medium voltage distribution power system is presented. The DSTATCOM helps to improve sending end & receiving end voltage and current drawn from a Non Linear Load (NLL). The control strategy based on Synchronous Reference Frame (SRF) theory is designed so that the voltage injected by active filter is able to mitigate the voltage sag, imbalance in the source voltage and reduce the

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... nic content. The Level Shifted PWM (LSPWM) techniques are adopted to investigate the performance of CHB inverter. The performance of the proposed DSTATCOM is validated through simulation using MATLAB software with its SIMULINK and Power System block set tool and also performance of the system without DSTATCOM and with DSTATCOM is evaluated.