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The objective is to mitigate power quality problems and its occurrence on the distributed lines in power system field. Here, the harmonics are voltage sag, swell, total harmonic distortion and power factor correction. The capacitor supported dynamic voltage restorer (DVR) was designed with the 9 level cascaded multilevel inverter (MLI). This paper utilizes the error signal to control the triggering of the switches of an inverter using unit vector of space vector modulation and pulse width modulation inverter presage compensation scheme. SRFT has also been used for conversion of voltage from rotating vector to stationary. Main goal was to reduce power quality problems like sag, swell, and harmonics and power factor correction. Simulation results have been verified with and without MLI.

international journal of electrical and electronics engineering research

Modelling and Designing of Cascaded 9 Level Voltage Source Converter Based on DVR for Mitigating Harmonics in Distributed Power System using Unit Vector