Analysis of Magnetization Curves Influence on Field Weakening Processes in Vector-Controlled Induction Motor Drives

Abstract

The paper presents the results of the study of influence of nonlinearity of the magnetization curve on the processes of controlling the torque and the flux vector module using the Indirect Field-Oriented Torque Control algorithm of Induction Motor. The work of the algorithm in the field weakening mode and the effect of saturation of the motor on the control processes in the field weakening region have been considered. The results obtained by mathematical modeling confirm the need to take into account the nonlinearity of the magnetization curve when the induction motor works in the field weakening region.