Improvement of the Torque Control Dynamics of the PMSM Drive Using the FOC-Controlled Simple Boost QZSDMC Converter

Abstract

The following paper presents a method for improving the dynamics of a PMSM drive torque control loop by using Quasi Z-Source Direct Matrix Converter. In recent research Quasi Z-Source, which is a boost converter, was connected with the Matrix Converter in order to allow operation with unity voltage transfer ratio. In this paper voltage boost of the mentioned device was used to speed up the increase and decrease of the current in motor coils. A Field Oriented Control for Matrix Converter method is presented, which is adapted to operate with Quasi Z-Source controlled by the Simple Boost. The simulation research comparing the traditional Matrix Converter with the proposed system was performed. The following were analysed: motor current rise time, power grid THD, spectrum and power consumption of both devices. Quasi Z-Source Direct Matrix Converter turned out to have higher torque control loop dynamics and lower values of the current control error integral but at the cost of an increase of power consumption and THD.