|Title:||Review of time and space harmonics in multi-phase induction machine|
|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.|
|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.|
|Appears in Collections:||Články / Articles (RICE)|
Články / Articles (KEV)
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