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  1. [W-MO-12] Comparative Evaluation of Synchronous Impedance of a 2D Model and a 3D Model

    Overview1.IntroductionFor synchronous motors, 2D simulations have been widely used because of the large computational costs, although impedance varies during operation due to its non-linear propertie…

    7 Mar 2018

  2. [W-MO-13] Evaluation of a 2D Brush Motor Analysis Accounting for 3D Geometry

    Overview1.IntroductionAs brush motors are cost efficient and do not require control circuits, these familiar DC motors are used in a wide range of applications, from toys to industrial products.Thoug…

  3. [W-TR-15] Loss Evaluation of a Transformer Shield Based on the Homogenization Method

    Overview1. IntroductionFor power transformers, stray loss generated in the surrounding structures due to leakage flux originating from windings is a common issue. Because people may make direct phys…

  4. [W-MO-17] Alternator Analysis Using Tetrahedral/Pentahedral Mixed Mesh

    Overview1.IntroductionClaw pole alternators are used commonly as alternators for automobiles – due to the unique 3D structure and complicated flow of magnetic flux, the 3D electromagnetic field simul…

  5. [W-MA-21] Iron Loss Analysis of an SR Motor Accounting for Hysteresis and Eddy Current Distribution

    Overview1. IntroductionSwitched reluctance motors (hereafter referred to as an "SR motor") are highly durable, robust, and have low costs since they do not use permanent magnets. Since the magnetic f…

  6. [W-MO-23] Measurement of PM Motor Vibration/Noise and Analysis Modeling

    Overview1. IntroductionWhile miniaturization and efficiency optimization are always in demand in motor development, demand is also increasing for the reduction of vibration and noise in recent years.…

  7. [W-MO-24] Copper Loss Analysis of a Rotating Machine Using the Zooming Method

    Overview1. Copper Loss Analysis of a Rotating MachineThere is an electromagnetic field analysis using the finite element method (FEM) as an effective analysis method for copper loss accounted for edd…

  8. [W-MA-46] Calculation Method of Eddy Current Loss of Electromagnetic Steel Sheet Using a 1D Finite Element Method

    Overview1. Background and subjectAs electromagnetic devices become more and more efficient, the precision in iron loss analysis becomes more important for electromagnetic field analysis. Synchronous …

  9. [W-MA-47] Toward Practical Application of Iron Loss Analysis Taking Stress into Account

    Overview1. Environments That Take Stress into AccountIncreasing the accuracy of an iron loss analysis for a magnetic field analysis poses challenges. With conventional iron loss calculation methods, …

  10. [W-MA-48] Analyses of Higher Harmonics Copper Loss and Improvements Through Design Changes

    Overview1. BackgroundIncreasing the accuracy of a loss analysis for a magnetic field analysis becomes an important issue. Various factors cause losses to diverge from their theoretical state, and the…

  11. [W-MA-49] Necessity and Approach of Stray Load Loss Analysis

    Overview1. BackgroundThe main components of loss depend on the operating point. One of these components is stray load loss. The stray load loss as a physical phenomenon is caused by eddy currents gen…

  12. [W-MA-50] Effectiveness and Limits of 2D Analysis from Loss Analysis

    Overview1.IntroductionIn electromagnetic field analysis, 2D analysis (FEM) that include iron loss evaluations are widely used as a way to find a balance between finely detailed analysis and convenien…

  13. [W-MA-51] Understanding Electromagnetic Phenomena in Steel Sheets Through Simulation

    Overview1. IntroductionDiscussions so far have focused on the degree to which agreement was found with respect to total loss on actual measurements and analysis in iron loss evaluations. However, as …

  14. [W-MB-52] Method for Determining the Optimum Resolution of JMAG-RT Model

    Overview1. BackgroundIn recent years, with the shortening of the development cycle, model-based development (MBD) has become more important than before. Among them, JMAG-RT provides a plant model to …

  15. [W-SE-53] Transition to Steady State in a Short Time

    Overview1.BackgroundThere is a strong demand in the market for reducing calculation time in electromagnetic field analysis. One of the reasons is that, it is necessary to calculate time steps of many…

  16. [W-MO-85] Efficiency Map Evaluations Considering Harmonic Loss

    Overview1. BackgroundAlong with high efficiency of electromagnetic equipment, highly accurate loss analysis is an important subject in electromagnetic field analysis. Permanent magnet synchronous mot…

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