A DTC Stator Flux Algorithm for the Performance Improvement of Induction Traction Motors

- Journal title : Journal of Power Electronics
- Volume 16, Issue 2, 2016, pp.572-583
- Publisher : The Korean Institute of Power Electronics
- DOI : 10.6113/JPE.2016.16.2.572

Title & Authors

A DTC Stator Flux Algorithm for the Performance Improvement of Induction Traction Motors

Van-Tien, Pham; Zheng, Trillion Q.; Yang, Zhong-ping; Lin, Fei; Do, Viet-dung;

Van-Tien, Pham; Zheng, Trillion Q.; Yang, Zhong-ping; Lin, Fei; Do, Viet-dung;

Abstract

In view of the speed control characteristics of induction traction motors and the problems of direct torque control (DTC) algorithms in current applications, this paper presents a DTC algorithm characterized by a symmetrical polygon flux control and a closed loop power control in the constant-torque base speed region and constant-power field-weakening region of induction traction motors. This algorithm only needs to add a stator flux control algorithm to the traditional DTC structures. This has the benefit of simplicity, while maintaining the features of traditional algorithms such as a rapid dynamic response, uncomplicated control circuit, reduced dependence on motor parameters, etc. In addition, it obtains a smoother flux trajectory that is conducive to improvement of the harmonic elimination capability, the switching frequency utilization as well as the torque and power performance in the field-weakening region. The effectiveness and feasibility of this DTC algorithm are demonstrated by both theoretical analysis and experimental results.

Keywords

AC motor drives;Direct torque control;Induction rotating machines;Torque control;Traction motor drives;

Language

English

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