Power Factor Improvement and Dynamic Performance of an Induction Machine With a Novel Concept of a Converter-Fed Rotor

This paper investigates an induction machine with a novel concept of the rotor fed by a converter. The stator is Y-connected and directly connected to the grid, while the rotor windings are open-ended and fed by a back-to-back converter with a floating capacitor. Power factor and efficiency improvem...

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Bibliographic Details
Published inIEEE transactions on energy conversion Vol. 31; no. 2; pp. 769 - 775
Main Authors Yanmei Yao, Cosic, Alija, Sadarangani, Chandur
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2016
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Summary:This paper investigates an induction machine with a novel concept of the rotor fed by a converter. The stator is Y-connected and directly connected to the grid, while the rotor windings are open-ended and fed by a back-to-back converter with a floating capacitor. Power factor and efficiency improvements of the induction motor are studied with different settings of phase-shift angle between the two converters. Moreover, the dynamic performance of the induction machine is explored in MATLAB/Simulink and verified experimentally on a 1.8-kW induction machine in the laboratory. The result shows good agreement between simulation and experiment. At a constant speed, variable load operation of the induction machine is obtained by setting the frequency of the rotor voltage.
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ISSN:0885-8969
1558-0059
1558-0059
DOI:10.1109/TEC.2015.2505082