Research on Variable Frequency Transformer: A Smart Power Transmission Technology

The electric power systems are interconnected for the economical and reliable operation of supply systems. An interconnection can be implemented through AC DC links. A variable frequency transformer (VFT) has emerged as an alternative asynchronous interconnection, like back-to-back HVDC Unlike links, VFT requires reduced reactive power, offers quicker incipient transient recovery, coherent damping ability. Various control strategies have been proposed in literature to achieve controllable VFT. scalable high exchange by implementing Park model. is essentially a doubly-fed induction machine (DFIM) based system that needs slip rings brushes rotor circuit. Hence, brushless (BDFIM) their various topologies literature. In this paper, comprehensive review carried out, which includes: networks philosophy, flow controllers used networks, FACTS controllers, link with technical merits limitations. comparison its counter technology also elaborated, suggests better option grid interconnection. Moreover, thorough done concerning configuration, controls, scaling research papers patents. Furthermore, detailed mathematical modeling out along numerical simulations under both steady-state fault conditions using PSCAD/EMTDC software.