Impact Analysis of Inter-phase Transformer on A Double Star AC/DC Controlled Converter

Abstract

This paper presents the impact analysis of Interphase transformer (IPT) on a three-phase, double star, controlled rectifier for low voltage high current (LVHC) applications. The design of IPT is carried out on the basis of voltage and current waveforms. Various waveforms of both the star connected transformers and load are presented and discussed for impact analysis during high current operation. Three phase, six pulse, controlled converter is operated for a 5300A load at 115 V. The performance of the designed system is simulated using MATLAB Simulink. Obtained results are presented to validate the design concepts. A comparison of Total Harmonics Distortion (THD) at different firing angles is also presented to demonstrate the impact of IPT.