Fixed Frequency Current Control-based Boost Rectifier Analysis for Single Phase Solid State Transformer

Due to the complication of nonlinear core designing and various technical complexity, it is essential to develop a new era that can overcome the issues generated during the utilization of conventional transformers. Even sometimes non-technical issues also may cause badly behaved like oil leakage, heavy weight, bulky in size, etc. these are the main motivational features to developing Solid State Transformer (SST). It’s easily controllable and with a solution to all above said issues and also able to transfer power smoothly. Issues of size, weight, and controlling of all electrical parameters to transfer power from one circuit to another circuit are also performed by SST. Here conventional transformers are replaced with high-frequency isolated power electronics converters. Now a day due to the high penetration of Distributed Power Sources (DPS) in power systems there are many power quality issues are generated. Due to DPS harmonics are becoming an issue and posing challenges for transformer design in the power system. Here three major states are defined as AC to DC, DC to DC, and DC to AC conversation to develop electronics SST. A boost transformer is designed with a successful control strategy for AC to DC rectification. A 1-phase boost rectifier with fixed frequency current control is developed and tested for SST. The same is compared with the hysteresis current control-based scheme considering THD analysis and numbers of switching. Obtained results show the successful and reliable operation by overcoming all the considered functions of SST.