Transformer-less Dynamic Voltage Restorer Based on Buck-Boost Converter

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Why is it important?

The proposed topology is able to compensate any voltage disturbances such as sag, swell and flicker. Unlike the presented topology, the injection transformer is eliminated in the proposed topology. For this reason the volume and the weight of the proposed topology is impressively reduce. In the first section, the operation principle of the structure is expressed. Then, the implemented control method for the topology is described. Finally, the simulation and experimental results are presented to verify the effective operation of the proposed topology.