Investigation of a smart transformer

A method for demand side voltage control, using a three winding smart transformer is investigated. The concept is to control the secondary side voltage of the transformer by injecting a voltage to the tertiary winding. This paper presents a design methodology for the proposed transformer, as well as for the controlling scheme, and validates the concept through simulation and hardware implementation. Also an analysis of the operational efficiency has been presented. Then, the limitations of the design and the possible improvements in developing the prototype model as a final product has been discussed.