Design and Analysis of AC/AC Buck-Boost Converter based on Power Electronic Transformer for Power Quality Improvement

Abstract

In this paper, a new Y-source and matrix converter combination that can be used as an AC/AC buck-boost for intelligent transformer application is proposed. This mixture can be used to solve the sag and swell issues of output voltage in various electrical power systems and to reduce the size and weight of the traditional power transforms by using power electronic devices. Relative to the input voltage, the suggested AC-AC matrix configuration can enhance the output voltage in both out-of-phase and in-phase. The output voltage can also be compared to the input voltage in an out-of-phase or in-phase method. The proposed AC/AC single-phase Y-source matrix converter’s complete analysis and working principles have been presented. Also, using the Mathematica version 11.2 software, a comprehensive mathematical model of the converter has been developed and validated. A co-simulation using OrCAD/PSpice and Matlab/Simulink has been constructed for both the ZS-MC and the suggested YS-MC in order to evaluate the performance of the converter. Where the thorough simulation analysis indicates that in terms of gain, input current, input power factor, and unifying the ground, the proposed YS-MC performs better than the ZS-MC. The results further prove that by adjusting the duty cycle, the output voltage can be either boosted or bucked and by modifying the PWM technique, the output voltage may be either out-of-phase or in-phase with the input voltage.