Voltage Quality Enrichment using Transformerless Dynamic Voltage Compensator based on Asymmetrical Multilevel Inverter

In this article, Asymmetrical voltage source Multilevel Inverter based Transformerless DynamicVoltage Compensator (ASMLI-TDVC) for load Voltage Quality (VQ) enrichment is proposed.The ASMLI-TDVC is controlled such that it compensates different levels of VQ problems withlesser Total Harmonic Distortion (THD). Synchronized voltage injection achieved through seriestransformer from traditional DVC leads to rise in the size of DVC and make system cumbersome.ASMLI based on less switch count topology is utilized for TDVC to overcome theseaforementioned issues. Simulation studies of ASMLI-TDVC are carried out using MatlabSimulink software. Further, an experimental model is developed and tested in real-time usingOP4500. Results prove that dynamic compensation for VQ improvement is achieved by ASMLITDVC.

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