Modulation Strategy for Multi-Phase Matrix Converter with Common Mode Voltage Elimination and Adjustment of the Input Displacement Angle

Janina Rząsa

doi:10.3390/en13030675

Abstract

In the last several years, thanks to the development and continuous improvement of semiconductor switching elements, and the simultaneous increase in interest in multi-phase drives, the investigation into constructing multi-phase converters has been growing. The matrix converter (MC) is considered to be one of the contenders for use in the multi-phase drive. In the context of using MC in the drive, it is expected to eliminate the common mode voltage (CMV). Another important problem is the ability to correct the input displacement angle to ensure the operation of the MC with unity input power factor. The purpose of the article is to present an MC modulation strategy that implements both CMV elimination and input displacement angle adjustment. Analytical and simulation analyses of the strategy, in application to three-to-multi-phase MC is presented. The suggested modulation strategy in applying to three-to-multi-phase MC is implemented in ATP-EMTP (Alternative Transients Program-ElectroMagnetic Transients Program) software. Simulation results are provided for a three-to-three-phase three-to-six-phase and three-to-nine-phase MC. The proposed modulation strategy is validated using an experimental approach.

Highlights

A matrix converter (MC) was invented and for the first time described in the early nineteen eighties by A
The method described in [10] reduces the peak value of the common mode voltage (CMV) by 42%, and in the paper [12], the CMV is reduced by 29% in peak value
After analyzing 27 possible switching state combinations related to three-to-three-phase MC, it can be noted that 6 of them correspond to rotating voltage space vectors

Summary

Introduction

A matrix converter (MC) was invented and for the first time described in the early nineteen eighties by A. The research in the area of MC has significantly accelerated since the publication of the first articles. Within three decades of publishing the first MC-related articles, many research centers around the world have been studying MC, focusing on, among other things, theoretical and practical implementation issues. In addition to the three-to-three-phase MC, new topologies have been proposed, such as indirect matrix converters (IMC) or multi-phase systems. Thanks to the development and continuous improvement of semiconductor switching elements, the interest in constructing multi-phase converters has been growing in the last several years. This is associated with a simultaneous increase in interest in multi-phase drives

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