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http://dx.doi.org/10.5207/JIEIE.2012.26.1.066

A Direct Torque Control System for Improving Speed Response of Five-Phase Induction Motor  

Kim, Min-Huei (영남이공대학 전기자동화과)
Choi, Sung-Un (영남이공대학 전자정보계열)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.26, no.1, 2012 , pp. 66-74 More about this Journal
Abstract
This paper propose a improved direct torque control(DTC) system for improving operation of five-phase squirrel-cage induction motor(IM). A five-phase IM drives present unique characteristics due to the additional degrees of freedom and also drives possess many others advantage compared with the traditional three-phase motor drive system, such as reducing a amplitude of torque pulsation and increasing the reliability. In order to maximize the torque per ampere, the proposed motor has concentrated windings and the produced back-electromotive force(EMF) is almost trapezoidal, and the motor is supplied with the combined sinusoidal plus third harmonic of currents, there is necessary to controlled 3rd harmonic current. Also a DTC method is advantageous when it is applied to the five-phase IM, because the five-phase inverter provides 32 space vectors in comparison to 8 space voltage vectors into the three-phase inverter drive system. For presenting the superior performance of the proposed DTC, experimental results of speed control are presented using a 32-bit fixed point TMS320F2812 DSP with 1.5[hp] IM.
Keywords
Five-Phase; IM Control; DTC; Back-EMF; 3rd Harmonics Current Control;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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