Analysis of Power Distribution System in MRI & Transformer Design Optimization

Abstract

A transformer plays many roles such as voltage conversion, isolation, and noise de coupling, and it is a vital element in electrical power distribution systems. In different countries we have different voltage level and frequencies. There are a few transformers in Magnetic Resonance Imaging (MRI) applications. The transformers employed in various countries face different voltage levels and frequencies. Further in MRI, components require specific voltage levels like 480 V, 400 V, 380 V, and 230 V at 50/60 Hz frequencies. This necessitates to step-up/step-down voltages and use relevant frequencies in different countries. This work proposes to reduce multiple transformers to a single multi-tap transformer and optimize the performance of latter. The main objective of this study is to design a single multi-tap transformer, optimize it for the maintenance, inventory cost & reduce complexity of the system. Thus, Single combined transformer can be used for any system and overall cost will be reduced. Design of 80 kVA distribution transformer with calculation is presented. The design concepts and detailed design is presented, followed by the simulation results.