Transformer / Reactor

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  1. [L-TR-44] Winding Vibration Analysis of a Power Transformer

    Winding vibration originating from a transformer is a vibration phenomenon that uses Lorentz force as the vibration force, which occurs when flux leakage from the winding works on…

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

    In this paper, each electromagnetic steel sheet of the shield is not modeled; by applying the homogenization method which replaces magnetically and electrically equivalent materia…

  3. [W-SE-72] Reduction of Time Steps by Using Time Periodic Explicit Error Correction Method

    In electrical equipment design, Computer Aided Engineering (CAE) software is used to make the best possible products within allowable timelines.

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

    In the following, it is shown that the steady state analysis results can be obtained with less number of time steps by using the TP-EEC method.

  5. [W-HU-71] Notes on Performance Evaluation and Hardware Selection of JMAG Parallel Solver

    This document can be thought of as pointers and precautions for hardware selection and software operation.

  6. Analysis of Winding Losses of Shunt Reactor using “Zooming Analysis”


  7. 3D Magnetic Field Analysis of Large Power Transformer with Parallel Calculation Processing

    Hirokazu Hayashida, Fuji Electric Co.,Ltd.

  8. 254 – Vibration Analysis of Oil-Immersed Large Transformer

    This document introduces a case example of evaluating the vibrations of a large transformer. Parts that are usually the source of vibrations are the core, tank, and windings, but …

  9. 235 – Reactor Core Stray Loss Analysis

    In this example, reactor core stray loss is described.

  10. 203 – No-Load Test Analysis of Power Transformer

    This example focuses on modeling in the analysis of no-load tests in JMAG and obtains the iron loss distribution, current, excitation conductance, and excitation susceptance that …

  11. 221 – Confirmation of the Influence in the Reduction of High-Frequency Resistance of a Magnetically Plated Wire Choke Coil

    In this example, high frequency resistance values are obtained from choke coil copper loss analysis results using JMAG’s layer coating mesh function, and the effectiveness of redu…

  12. 202 – Core Stray Loss Analysis of Power Transformer

    This document introduces runs analysis by modeling the short-circuit test that is conducted when evaluating stray loss and obtains stray loss distribution in the core close to the…

  13. 238 – Hysteresis Loss Analysis in a Reactor with DC Bias

    In this example, we will observe the difference between the hysteresis losses calculation method loop count and the play model for the model that is subjected to a DC bias filed o…

  14. 232 – Reactor Joule Loss Analysis

    In this example, investigating Joule loss with respect to the positions of air gaps in a reactor is presented.

  15. 206 – Temperature Analysis of an Oil-Immersed Transformer Using a Coupled Magnetic Field and Thermal Fluid Analysis

    This document introduces, examples and steps will be shown to obtain heat distribution in a magnetic field analysis for a forced circulation type oil-immersed transformer, map the…

  16. 204 – Copper Loss Reduction Effect Analysis of Switching Transformers using Litz Wire

    This document introduces confirms the effects on copper loss due to the presence or absence of a twisted structure in the winding regarding the copper loss that occurs in the smal…

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