Title: Review of time and space harmonics in multi-phase induction machine
Authors: Kindl, Vladimír
Čermák, Radek
Ferková, Želmíra
Skala, Bohumil
Citation: KINDL, V. ., ČERMÁK, R. ., FERKOVÁ, Ž. ., SKALA, B. . Review of time and space harmonics in multi-phase induction machine. Energies, 2020, roč. 13, č. 2, s. 1-17. ISSN 1996-1073.
Issue Date: 2020
Publisher: MDPI
Document type: článek
URI: 2-s2.0-85078484309
ISSN: 1996-1073
Keywords in different language: multiphase;induction;motor;space harmonics;time harmonics;injection
Abstract: Modern multiphase electric machines take advantage of additional degrees of freedom for various purposes, including harmonic current injection to increase torque per ampere. This new approach introduces a non-sinusoidal air gap flux density distribution causing additional technical problems and so the conventional assumptions need to be revised. The paper presents a methodology for synthesis of air gap magnetic field generated by a symmetrically distributed multiphase windings including the rotor field reaction due to the machine’s load. The proposed method is suitable either for single-layer or double layer windings and can be adopted either for full-pitched or chorded winding including slots e ects. The article analyses the air gap flux density harmonic content and formulates conclusions important to multiphase induction motors. It also discusses e ects of time harmonic currents and illustrates the principle of changing number of pole-pairs typical for harmonic currents being injected to increase torque.
Rights: © MDPI
Appears in Collections:Články / Articles (RICE)
Články / Articles (KEV)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/36937

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