Power Factor Improvement and Dynamic Performance of an Induction Machine With a Novel Concept of a Converter-Fed Rotor
2015 (English)In: IEEE transactions on energy conversion, ISSN 0885-8969, E-ISSN 1558-0059, Vol. PP, no 99, 1-7 p.Article in journal (Refereed) Epub ahead of print
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.
Place, publisher, year, edition, pages
IEEE , 2015. Vol. PP, no 99, 1-7 p.
Asynchronous machinery, Electric power factor, Induction motors, MATLAB, Phase shift, Phase shifters, Power converters, Back-to-back converter, Dynamic performance, Efficiency improvement, Floating capacitor, Induction machines, MATLAB /simulink, Power factor improvement, Variable loads
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Electrical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-185013DOI: 10.1109/TEC.2015.2505082ISI: 000377106100017ScopusID: 2-s2.0-84949980797OAI: oai:DiVA.org:kth-185013DiVA: diva2:917917
QP 2016042016-04-082016-04-082016-06-28Bibliographically approved