Transient Magnetic (2D/Axisymmetric)

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  1. 205 – 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. 165 – 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.

  3. 230 – 6-Phase SPM Motor Inverter Fault Simulation

    In this example, a JMAG-RT model of a 6-phase SPM is loaded into a control/circuit simulator, and circuit simulation for an inverter failure is carried out.

  4. 257 – IPM Motor Topology Optimization

    In this example, rotor core maximum stress and radial direction maximum displacement in the radial direction are set to certain values or less, and rotor geometry is designed that…

  5. 265 – Creating Synchronous Reluctance Motor Efficiency Maps

    OverviewWith the increase in price for rare earth magnets, synchronous reluctance motors that do not utilize permanent magnets have been attracting attention for the likes of indu…

  6. [JFT112] Defining Response Values with Scripts in Topology Optimization Using NGnet

    In this document, response values are calculated using a Python script, and a method for performing topology optimization used as an objective function is described.

  7. [JFT110] Evaluating the Effect of the Large Number of Holes Generated by Topology Optimization

    This document describes how to efficiently analyze the presence or absence of an effect on hole response values when a large number of holes are generated as a result of topology …

  8. 264 – Creating 6-Phase IPM Motor Efficiency Maps

    In this example, the efficiency map of a 6-phase IPM motor is created with loss ratios at each operating point also evaluated.

  9. 225 – Induced Voltage Analysis on Memory Motors Using Variable Magnets

    In this example, the change in motor characteristics are checked as the memory motor variable magnet magnetization is changed using the three-phase coil current. One example of mo…

  10. [JFT109] Comparing Efficiency Maps and Loading External Data

    Using a JMAG-Designer efficiency map study, this document describes the method for creating efficiency maps with external data as output and confirming the differences between tho…

  11. [JFT054]Electromagnetic Force Spatial Modes Acting on a Stator

    This document describes the procedure to confirm the spatial modes of the electromagnetic force acting on a stator using a radar graph from electromagnetic force analysis results …

  12. 259 – Automatically Searching for Current Phase that Obtains Maximum Torque and Evaluating Torque Characteristics

    In this example, a search is performed for the current phase that maximizes torque for each of 3 rotor geometries. Motor average currents and torque ripples are evaluated using th…

  13. [JFT069] Performing Harmonic Loss Calculations Accounting for Current Control with JMAG-Designer and JMAG-RT

    In this document, how to calculate the harmonic loss of a current controlled (PWM controlled) PM motor at high speed using a JMAG-RT model is presented.

  14. 262 – 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…

  15. 223 – 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…

  16. 252 – Geometry Optimization of a Solenoid Valve

    In this example, an example where the geometry of a solenoid valve is optimized using a multi-objective optimization algorithm is presented.

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