A semi-analytical method based on the harmonic modeling (HM) technique is presented for analysis of magneto-static field distribution in slotted structure rotating electric machines. In contrast to existing literature, proposed model does not require assumption infinite tooth permeability, material property homogenization, or a hybrid approach. fact, permeability variation machine parts embedded directly into magnetostatic solution. Currently, only linear soft-magnetic materials with finite...

A semianalytical framework is presented for the analysis of synchronous reluctance motors. The model based on a recently refined definition harmonic modeling technique electromagnetic actuators in polar coordinates, and includes magnetic field solution soft-magnetic motor parts. In order to implement model, representation geometry required. Therefore, method define proposed applied benchmark topology. calculation results are then validated against finite-element predictions acquired actual...

In high speed electrical machines, one of the main challenges that can be faced is frequency losses in machine windings due to both skin and proximity effects. This paper studies effect using different types magnet wires on AC winding electric machines. Using finite element modelling (FEM), conductors are subdivided into multiple strands calculate each conductor layer. Aiming at loss minimization, arrangements introduced compared a wide range frequencies. Further, four coil designs...

In high speed electrical machines, one of the main challenges that can be faced is frequency conduction losses in machine windings due to both skin and proximity effects. This paper studies effect using different types magnet wires on AC electric windings. Using finite element modelling (FEM), conductors are subdivided into multiple strands calculate each conductor layer. Further, aiming at loss minimization, arrangements introduced compared a wide range frequencies. Moreover,...

This paper presents a permanent magnet model which takes temperature dependencies and demagnetization effects into account. The proposed is integrated magnetic fundamental wave machine using the modeling language Modelica. For different rotor types models are developed. simulation results of Modelica compared with measurement results. Additionally, to finite element analysis in order assess applicability model.

The use of empirically determined coefficients to include the effects leakage and fringing flux is a large drawback traditional induction motor (IM) models, such as lumped parameter, magnetic equivalent circuit anisotropic layer models. As an alternative, Finite Element Analysis (FEA) often used determine field distribution accurately, although at cost much longer computation time. A good alternative FEA, both in terms time accuracy, harmonic modeling. Therefore, this work, previously...

A general description of the Anisotropic Layer Theory, which is derived in polar coordinate system and applied to analysis squirrel-cage induction motors (IMs), presented. The theory considers nonconductive layers, layers with predefined current density, induced density. electromagnetic field equations are solved by means Fourier analysis. Furthermore, two different magnetic models for IMs proposed, namely, direct rotor model indirect (IRC) model. coupled single-phase equivalent circuit an...

This paper concerns the force density optimization for medium-stroke reluctance actuators applied in antivibration applications. The a conventional E-core actuator is limited medium strokes by nonlinear force-displacement characteristic. In this paper, different tooth topologies are analyzed to maximize along stroke using finite-element analysis. Teeth parameters tuned each topology analyze influences on over of ±12.5 mm. An analytic thermal model used estimate surface temperature and...

The Anisotropic Layer Theory (ALT) has been extensively used for electric machine analysis, due to its ability take finite iron permeability into account globally. However, the effect of slot openings, which are often present in slotted electrical machines, is neglected. In this work, an extension ALT openings proposed. classical combined with Harmonic Modeling Technique (HMT) structures by assuming infinitely permeable tooth tips. A semi-analytical solution described and extended model....

Recently, strong improvements have been made in the applicability of harmonic modeling techniques for electrical machines with slotted structures. Various implementations permanent magnet motors and actuators investigated applied design optimization tools. For structure induction (IMs), however, method has not very extensively yet. The main reasons this are complexity involved large number stator rotor slots issues arising calculation induced bar currents. In work, a model is implemented...

An Expert System (ES) for the analysis and design optimization of low-power, three-phase induction motors (IMs) is presented. The ES based on analytical models, which are carefully selected from literature, coupled together to calculate motor performance characteristics. These characteristics computed within a few seconds. Also, validation calculation results against measurements four test shows that reasonably accurate. Additionally, applied redesign case study prototype new realized....

The development of the next generation electrical vehicles requires drive-trains to become more compact, high-performant, and robust at lowest possible cost. These compact operate same power ratings as their bigger sized equivalent do need dissipate heat in a smaller volume. Therefore, advanced liquid cooling methods drive-train components are needed enhance removal increase compactness, i.e., density. Till now, most cooled switched reluctance motors (SRM) such use already cooling, Water&...

A general description of the Anisotropic Layer Theory, derived in polar coordinate system, and applied to analysis squirrel-cage induction motors (IMs), is presented. The theory considers non-conductive layers, layer with predefined current density layers induced density. electromagnetic field equations are solved by means Fourier analysis. Further, we propose two different magnetic models for IMs, namely Direct Rotor Current (DRC) model Indirect (IRC) model. coupled single phase equivalent...

This paper concerns the force density optimization for medium-stroke reluctance actuators applied in anti-vibration applications. The a conventional E-core actuator is limited medium strokes by nonlinear force-displacement characteristic. In this paper, different tooth topologies are analyzed to maximize along stroke using finite element analysis. Teeth parameters tuned each topology analyze influences on density. An analytic thermal model used and verified with simulations.

This paper proposes a combined experimental and model based approach to compare determine the thermal properties of different wire types electric machines. With increasing trend in power density, reliable models are key design machines which rely on accuracy input parameters. These highly depend manufacturing processes knowledge material vary within scientific literature. Based experiments windings assembled identical motorettes, fitted with lumped parameter uncertainties quantified. used...