Magnetic Field

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  1. [W-MB-102] Motor Efficiency Map Evaluation for Model-Based Development (MBD) Using FEA Simulation

    In MBD, it is necessary to evaluate devices characteristics without having to wait for the manufacturing of a prototype.

  2. [W-SE-113] Reduction of calculation time using Equivalent Circuit model

    In electrical machine design, the use of coupled analysis between the electromagnetic FEA and the motor drive control circuit is necessary in order to have an understanding of the…

  3. 30 – Magnetization Field Evaluation of an SPM motor

    In this example, carry out SPM motor's magnetization to obtain the magnetization field and magnet's surface magnetic flux density.

  4. [W-MO-114] FEA efficiency map compared to measurements

    In this paper, we compare the simulation-based efficiency map and the actually-measured efficiency map, and analyze the difference between the two efficiency maps and the factors …

  5. [W-MA-88] Improvements in Accuracy of Anomalous Eddy Current Loss Calculations (1)

    In iron loss analysis, conventionally, methods using previously measured iron loss data have been mainly used (hereinafter referred to as conventional methods).

  6. [L-OP-109] Exploration of New Ideas Using Topology Optimization

    The requirements for motor design are getting more advanced, satisfying torque ripple, line voltage limit, stress of core, as well as maximize the torque at low and high speeds. I…

  7. [L-SE-117] Dealing with Non-Conforming Mesh

    In an analysis using FEA, the motion region and stationary region connection surface meshes are made to conform. To do this the step displacement is adjusted to be an integral mul…

  8. [L-SE-116] Accuracy Improvement of Electromagnetic Force Calculation Using Correction

    In precision equipment analysis that requires high accuracy of operation, high accuracy is also required for the minute electromagnetic force generated by leakage flux and so on.

  9. [L-MO-115] Performance Evaluation of Induction Motors Using Efficiency Maps

    To analyze an induction motor's maximum efficiency, the voltage and slip is varied to find the combination with the highest efficiency.

  10. [L-MO-105] System Design with Model-based Efficiency Map (Speed Priority Mode)

    Electrical Vehicle drive require high efficiency of 95% or more over a wide operating range.

  11. [L-MU-110] Reaching Steady-State at an Early Stage Using a Control Circuit Containing a JMAG-RT Model

    Many motor performance evaluations are performed at steady-state. If transients occur during control/circuit coupling, it is necessary to calculate the number of electrical angle …

  12. [L-MO-106] Prototype and Performance Evaluation with Model-based Efficiency Map (Accuracy Priority Mode)

    The maximum efficiency of the drive motor for EV vehicles exceeds 95%. As further efficiency improvement is in the order of 1%, the efficiency error with the actual machine in the…

  13. 228 – Induction Motor Thermal Analysis

    In this example, evaluating induction motor temperature distribution.

  14. 254 – Vibration Analysis of a Large Oil-Filled Transformer

    In this example, evaluating vibration caused by electromagnetic excitation in a large transformer. Since large transformers are oil-cooled, in this example the oil, which is the f…

  15. 20 – Sound Pressure Analysis of an SPM Motor

    This Application Note shows an example of an evaluation of a reactor’s sound pressure, when acquiring electromagnetic force generated by a stator core for a SPM motor and linking …

  16. 64 – Thrust Force Analysis of a Coreless Linear Motor

    In this example, explains how to obtain the thrust variations in a coreless linear motor when it is driven with a three-phase alternating current.

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