Time-harmonic finite-element analysis of eddy currents in the form-wound stator winding of a cage induction motor

Islam, Mohammad Jahirul; Pippuri, Jenni; Perho, J.; Arkkio, Antero

doi:10.1049/iet-epa:20070138

Cited by 21 publications

(1 citation statement)

References 8 publications

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“…In the last two decades, the developments in numerical methods and in computer have made it actical to use finite elements analysis to calculate the magnetic field in the electrical machines [30]. The FEA has many advantages compared to the other numerical methods such as handling complex geometries, nonlinearity etc.…”

Section: Finite Element Methodsmentioning

confidence: 99%

Untitled

2017

Teh. vjesn.

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Original scientific paper In this study, a new design was suggested in order to improve the performance of induction motors. In the proposed design, slits were applied in the middle of stator and rotor teeth. In these slitted models, the depth and width of slits were optimized with Finite Element Method Magnetics (FEMM) software using Finite Elements Method (FEM). To show performance improvement, suggested motor model and a reference motor model were compared at the rated operating point for the values such as input and output power, input current, power factor, efficiency and losses. Because of the decreases in both iron and copper losses, total losses in motor were reduced and the efficiency for rated operating point was improved by 1,869%. In the modelling, 3 kW squirrel-cage induction motor was used. Keywords: induction motor efficiency; motor losses; slitted tooth core design Porast učinkovitosti asinkronih motora pomoću dizajna jezgre s procijepljenim zubomIzvorni zanstveni članak U ovom istraživanju predložen je novi dizajn kako bi se poboljšala učinkovitost rada asinkronih motora. U predloženom dizajnu primjenjeni su procijepi u sredini zubi statora i rotora. U ovim procijepljenim modelima dubina i širina procijepa su optimizirani uz pomoć programa Magnetska metoda konačnih elemenata (FEMM) i koristeći Metodu konačnih elemenata (FEM). Za prikaz poboljšanja izvedbe, predloženi model motora i referentni model motora su uspoređeni u definiranim pogonskim tačkama za vrijednosti kao što su ulazna i izlazna snaga, ulazna struja, faktor snage, efikasnost i gubitci. Zbog smanjenja gubitaka željeza i bakra, ukupni gubitak u motoru je smanjen, a povećana je efikasnost za definiranu pogonsku tačku za 1,869%. U modeliranju korišten je 3 kW kavezni asinkroni motor.

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Section: Finite Element Methodsmentioning

confidence: 99%

Untitled

2017

Teh. vjesn.

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New approach for computational analysis of temperature rise phenomena in the rotor of an induction motor

Naskar¹,

Sarkar

2014

Energy Syst

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Electrostatic shielding for bearings discharge currents attenuation: analysis of its effectiveness, losses and impact on the motor performance – a study for design guidelines

Êvo

Paula

2020

IET Electric Power Applications

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The authors deal with the use of electrostatic shielding to mitigate the electric discharge machining (EDM) currents on the induction machine bearings. Employing 2D and 3D models, several finite element analysis (FEA) simulations were thoroughly made addressing the shielding effectiveness to attenuate the shaft-to-frame voltage and the associated eddy current losses for different shield widths, thicknesses and materials. The obtained results provide very good guidelines for the practical design of the shielding device. In addition, comparisons between frequency-and time-domain models highlight the importance of considering factors such as the saturation of the iron core, the rotor movement and non-sinusoidal sources to compute the eddy current losses in the shield. Besides, the authors present a comprehensive theoretical review of the EDM currents, where the main influencing factors and action mechanisms are compiled in a clear and didactic approach, for the purpose of broad comprehension.

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Time-harmonic finite-element analysis of eddy currents in the form-wound stator winding of a cage induction motor

Cited by 21 publications

References 8 publications

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New approach for computational analysis of temperature rise phenomena in the rotor of an induction motor

Electrostatic shielding for bearings discharge currents attenuation: analysis of its effectiveness, losses and impact on the motor performance – a study for design guidelines

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