The voltage quality issues shows the significant effect on the performance of radial secondary distribution feeder. This paper aims to enhance the voltage regulation of radial secondary distribution feeder system using 5-level TCHB inverter based dynamic voltage restorer. Series voltage drop is the major factor causes poor voltage regulation. A 5-level TCHB inverter based DVR is used to inject the same amount of voltage dropped by series impedance. The DVR injects voltage with proper magnitude, phase and frequency with the proposed single phase PLL based SRF control circuitry. This enhances the voltage regulation by maintaining the load voltage at its rated value. Both the simulation and hardware results shows the enhancement of voltage regulation with mitigation using DVR.dynamic voltage restorer (DVR), modulation index (MI), multi-level inverter (MLI), phase locked loop (PLL), pulse width modulation (PWM), total harmonic distortion (THD), transistor-clamped H-bridge (TCHB), voltage regulation (VR), voltage source converter (VSC)

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