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Transient Magnetic (2D/Axisymmetric)

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  1. [JAC205] Analyzing the Torque Characteristics of IPM Motors Using a Thermal Equivalent Circuit

    Here, we confirm a situation where temperature increases due to eddy current of the iron loss and magnet, which causes demagnetization of the magnet and torque reduction.

  2. [JAC269] Creating Three-Phase Induction Motor Efficiency Maps Accounting for Harmonics

    In this example, efficiency maps are created for a three-phase induction motor accounting for PWM carrier and slot harmonics. These are compared with efficiency maps when harmonic…

  3. [JAC215] Simulation of an IPM Motor with a Delta Connection Using a Control Simulator and JMAG-RT

    In this example, a JMAG-RT model is incorporated into a control/circuit simulator to monitor the circulating current when an IPM motor is being driven.

  4. [JAC262] IPM Motor Thermal Demagnetization Analysis with Incomplete Magnetization of Dy Diffusion Magnets

    In this example, a motor using Dy diffused magnets the thermal demagnetization resistance of the Dy diffused magnets with a coercive force distribution when there is incomplete ma…

  5. [JAC222] Irreversible Thermal Demagnetization Analysis of Incompletely Magnetized Magnets

    In this example, analysis is performed while varying the temperature of magnetized magnets, and then the influence on the torque waveform and magnetic flux density distribution is…

  6. [JAC273] Creating IPM Motor Efficiency Maps Accounting for AC Loss

    In this example, an IPM motor efficiency map that accounts for AC loss from a PWM is created, and a comparison with an efficiency map that does not account for AC loss is performe…

  7. [JAC267] IPM Motor Topology Optimization Using the Density Method

    Magnetic field and structural coupled analysis is run in this example. While accounting for rotor core strength, topology optimization that uses the density method is used to perf…

  8. [JAC017] Inductance Analysis of an IPM Motor

    This Application Note explains how to obtain the current phase angle characteristics of a dq axis inductance that accounts for magnetic saturation and flux leakage in an IPM motor.

  9. [JAC138] Vibration Analysis of an SR Motor

    This Application Note presents an example of how to obtain the electromagnetic force generated in the stator core of an SR motor and evaluate the sound pressure by linking it to t…

  10. [JAC223] Multi-Objective Optimization of an IPM Motor Account Stress at High-Speed Rotation

    In this example, the optimum current phase that achieves high torque per each geometry is obtained, and the torque characteristics (1,000 r/min) and stress due to centrifugal forc…

  11. [JAC213] Circuit/Control Simulation of a Wound-Field Synchronous Motor

    In this example, JMAG-RT is used to obtain the torque of a wound-field synchronous motor (below WFSM) and the coil inductance current dependence, and the spatial harmonic componen…

  12. [JAC268] SPM Motor Teeth Geometry Topology Optimization

    In this example, the on / off method is used to search for stator teeth geometry that maximizes average torque and minimizes torque ripple with the entire areas of stator teeth ti…

  13. [JAC165] Creating IPM Motor Efficiency Maps

    In this example, an efficiency map of an IPM motor is created and the loss ratios at each operating point are evaluated.

  14. [JAC107] Current voltage characteristics analysis of flyback converters

    In this example, this case study obtains the current waveform of the primary / secondary winding and the core magnetic flux density distribution, current density distribution insi…

  15. [JAC192] Response Characteristics Analysis of Solenoid Valves Accounting for Residual Magnetization

    In this example. we will discuss the steps to investigate the effect on responsiveness caused by residual magnetization generated in the magnetic materials, and look at case examp…

  16. [JAC115] Eccentricity Analysis of an SPM Motor

    This Application Note presents how to evaluate the cogging torque waveform and effects on the electromagnetic force acting on the stator in an SPM motor with and without eccentric…

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