Comparison of Efficiency for Different Switching Tables in Six-Phase Induction Motor DTC Drive

Asghar Taheri; Abdolreza Rahmati; Shahriyar Kaboli

Comparison of Efficiency for Different Switching Tables in Six-Phase Induction Motor DTC Drive

Asghar Taheri

Abdolreza Rahmati

Shahriyar Kaboli

Vol. 12, No. 1, pp. 128-135, Jan. 2012

10.6113/JPE.2012.12.1.128

Direct torque control

Efficiency Improvement

Six-Phase Induction Motor Drives

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Abstract

In this paper, different switching tables proposed for the Direct Torque Controlled (DTC) of a six-phase induction machine are simulated and implemented. A six-phase induction motor has 64 space voltage vectors which result in increased complexity in the selecting of inverters switching. The unsuitable selection of a switching table leads to large harmonics especially at low speed and it also reduces drive efficiency. A six-phase induction machine has large zero sequence harmonic currents of the order 6k1. These harmonic currents are varied in various techniques. Decreasing this loss is essential in a six-phase induction machine. The main purpose of this paper is to improve the ST-DTC of six-phase induction machines to reduce the voltage and current harmonics and the torque pulsation. Selecting a suitable method for minimizing these harmonics is very important.

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Cite this article

[IEEE Style]

A. Taheri, A. Rahmati, S. Kaboli, "Comparison of Efficiency for Different Switching Tables in Six-Phase Induction Motor DTC Drive," Journal of Power Electronics, vol. 12, no. 1, pp. 128-135, 2012. DOI: 10.6113/JPE.2012.12.1.128.

[ACM Style]

Asghar Taheri, Abdolreza Rahmati, and Shahriyar Kaboli. 2012. Comparison of Efficiency for Different Switching Tables in Six-Phase Induction Motor DTC Drive. Journal of Power Electronics, 12, 1, (2012), 128-135. DOI: 10.6113/JPE.2012.12.1.128.