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2008•Journal of Naval Aeronautical and Astronautical UniversityRequires access

Research on the Improved Direct Torque Control in Induction Motor

Yang Ji-hong

Open publisher page 1 citations

Abstract

Traditional direct torque control has some problems. For example, the estimated value of flux linkage is not precise and the high torque ripple exists especially when motor is at low speed. In this paper, a modified model for flux linkage calculation and divided space vector modulation for voltage vector selection was proposed. The simulation results show that the estimated value of flux linkage is more accurate and the torque ripple is reduced.

About this research paper

What this paper is about

Traditional direct torque control has some problems. For example, the estimated value of flux linkage is not precise and the high torque ripple exists especially when motor is at low speed. In this paper, a modified model for flux linkage calculation and divided space vector modulation for voltage vector selection was proposed. The simulation results show that the estimated value of flux linkage is more accurate and the torque ripple is reduced.

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Available abstract

Traditional direct torque control has some problems. For example, the estimated value of flux linkage is not precise and the high torque ripple exists especially when motor is at low speed. In this paper, a modified model for flux linkage calculation and divided space vector modulation for voltage vector selection was proposed. The simulation results show that the estimated value of flux linkage is more accurate and the torque ripple is reduced.

Key concepts: Direct torque control, Flux linkage, Control theory (sociology), Vector control, Torque ripple, Torque, Induction motor, Linkage (software)

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