Magnetic Field

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  1. 235 – Reactor Core Stray Loss Analysis

    OverviewWhen designing a high-frequency reactor which is a key component in a converter, inductance and loss, which are parameters required for voltage conversion, are important factors. Copper loss …

    24 Oct 2018

  2. 203 – No-Load Test Analysis of Power Transformer

    OverviewLarge-scale power transformers are expected to be highly-reliable as machinery that will support the industry infrastructure, but unfortunately, it is impossible to conduct tests connecting t…

  3. 221 – Confirmation of the Influence in the Reduction of High-Frequency Resistance of a Magnetically Plated Wire Choke Coil

    OverviewA choke coil is an electronic component aimed at filtering high frequency current. The current generated inside a choke coil has a distribution in a single wire, and among the wires, due to c…

  4. 236 – Magnetic Circuit Optimization for Plastic Magnets in an Axial Magnetic Field

    OverviewPlastic magnets are characterized by light weight with high strength and have a high degree of freedom in shaping, and very suitable for mass production.Anisotropic plastic magnets with good …

  5. 142 – Press Fit Analysis of a Divided Core

    OverviewSmaller size and higher output are being demanded of the motors used for applications such as air conditioning compressors. One production technique for achieving this is a higher lamination …

  6. 167 – Iron Loss Analysis of a Three Phase Induction Motor

    OverviewAn induction motor is a motor in which the rotating magnetic field of the stator coils causes induced current to flow in an auxiliary conductor, which produces force in the rotational directi…

  7. 181 – Analysis of SR Motor Drive Characteristics

    OverviewWith the skyrocketing prices of rare earth magnets, expectations have been rising for SR (switched reluctance) motors because they have a motor format that does not use permanent magnets. SR …

  8. 202 – Core Stray Loss Analysis of Power Transformer

    OverviewStray loss is mainly caused by leakage flux from winding, but structures closer to the winding will tend to be affected easier by leakage flux. The ratio of stray loss relative to all losses …

  9. 20 – Sound Pressure Analysis of an SPM Motor

    OverviewAs electric motors are becoming more common, motors which create less noise are in high demand. Sound can be divided into categories of electromagnetic noise, mechanical noise, and draft nois…

  10. 195 – Torque characteristics analysis of three-phase induction motors using 3D correction function

    OverviewAn induction motor is a motor in which the rotating magnetic field of the stator winding causes induced current to flow in an secondary conductor, which exerts force on the rotor in the rotat…

  11. [L-MO-29] Creating Efficiency Maps with JMAG (FEA)

    An efficiency map is an effective method for expressings the performance of a motor in all operating regions. Conditions which maximize efficiency are required to obtain an efficiency map, and a JMAG…

    19 Sep 2018

  12. [L-MO-10] JMAG-Express: A Motor Design Tool

    JMAG-Express is a motor design tool that calculates motor characteristics instantly and outputs design specifications to meet demanding requirements. Using the finite element method as a base enables…

  13. [L-MO-09] Easily Creating Complex Coil Ends Geometry in a Template

    The introduction of square wire coils and higher motor speeds no longer allow coil AC losses to be ignored as a loss factor. Coil AC losses are caused by the skin effect and proximity effect due to …

  14. [L-MB-33]Supporting Motor Drive Development with a JMAG-MATLAB/Simulink Coupling

    Together with Mathworks, the company that develops MATLAB/Simulink (hereafter referred to as "Simulink"), JMAG strongly supports model-based development (hereafter referred to as MBD), which is utili…

  15. [L-MB-32] Simulating Responsiveness of Electric Machinery During Control with High Accuracy Using a Direct Coupling Analysis

    For machines requiring high-speed responsiveness for controllers such as solenoid valves and injectors, level of accuracy required in simulation have increased following the advancement of controls. …

  16. [W-MA-88] Improvements in Accuracy of Anomalous Eddy Current Loss Calculations

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

    29 Aug 2018

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