Journal ArticleDOI
Estimation of Iron Losses in Induction Motors: Calculation Method, Results, and Analysis
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TLDR
It is demonstrated the necessity to consider the harmonics initial phase in order to increase the accuracy in the iron loss prediction in pulse width modulation inverter fed induction motors.Abstract:
This paper intends to develop a more accurate approach for determining the no-load iron losses in pulse width modulation (PWM) inverter fed induction motors. The proposed method is validated by means of a prototype motor with a plastic rotor cage. The iron losses have been computed by the time-stepping finite element method, both with sinusoidal and PWM supply. The iron losses have then been estimated by adding up the contribution generated by orthogonal components of the flux density, as if the iron losses generated by these components were independent phenomena. The rotational hysteresis losses, as well as excess ones, have been calculated applying a correction factor based on experimental data. These factors are a function of the peak flux density and ellipticity of the B vector loci. Experimental validations are provided for several frequency and magnetic saturation values. In addition, this paper demonstrates the necessity to consider the harmonics initial phase in order to increase the accuracy in the iron loss prediction.read more
Citations
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Journal ArticleDOI
Comparative Evaluation of Advanced Three-Phase Three-Level Inverter/Converter Topologies Against Two-Level Systems
TL;DR: A holistic comparison of advanced three-level topologies against the standard two-level voltage-source converter is given and shows the benefits and the optimization potential concerning several aspects, such as the necessary semiconductor chip area, the harmonic losses in the load machine and in filter components, and the volume of passive components.
Journal ArticleDOI
Online Multiparameter Estimation of Nonsalient-Pole PM Synchronous Machines With Temperature Variation Tracking
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Journal ArticleDOI
Performance Calculation for a High-Speed Solid-Rotor Induction Motor
Jacek F. Gieras,Juha Saari +1 more
TL;DR: The paper deals with analytical method of design and prediction of performance characteristics for induction motors with solid steel rotor coated with copper layer and the equivalent impedance of the rotor has been derived on the basis of the distribution of the 2-D electromagnetic field.
A self consistent generalized model for the calculation of minor loop excursions in the theory of hysteresis
TL;DR: In this paper, a generalization of the theory of hysteresis to cover asymmetric or minor loop excursions is presented. But the model presented is completely self-consistent with the original formulation and requires no additional parameters to describe the minor loops.
Journal ArticleDOI
Design of a Five-Phase Brushless DC Motor for a Safety Critical Aerospace Application
TL;DR: A five-phase brushless dc motor designed for an electrohydrostatic actuation system (EHA) suited to the thin and optimized wings with fault tolerance and high reliability, compact structure, and low weight is described.
References
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Book
Mathematical models of hysteresis
TL;DR: A new approach to the scalar Preisach model of hysteresis, which emphasizes its phenomenological nature and mathematical generality, is described in this paper, which gives the necessary and sufficient conditions for the representation of actual hystresis nonlinearities by the scalareach model.
Journal ArticleDOI
Theory of ferromagnetic hysteresis
David Jiles,David L. Atherton +1 more
TL;DR: In this paper, a mathematical model of the hysteresis mechanisms in ferromagnets is presented based on existing ideas of domain wall motion including both bending and translation, which gives rise to a frictional force opposing the movement of domain walls.
Journal ArticleDOI
General properties of power losses in soft ferromagnetic materials
TL;DR: In this paper, the authors measured the loss per cycle (sinusoidal flux waveform) versus magnetizing frequency f/sub m/(0 > 0) for a single cycle.
Book
Design of Brushless Permanent-Magnet Motors
TL;DR: In this article, the back-EMF waveform was used to evaluate the performance of brushless DC motors with axially laminated IPM motors and computer aided design of squarewave motors.
Journal ArticleDOI
An improved approach to power losses in magnetic laminations under nonsinusoidal induction waveform
Fausto Fiorillo,A. Novikov +1 more
TL;DR: In this article, it is shown that it is possible to accurately predict power losses in ferromagnetic laminations under nonsinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components on the magnetic induction derivative B.