Transformer / Reactor

Sort condition
Newest first
Oldest first
Views
  1. 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 …

  2. 235 – Reactor Core Stray Loss Analysis

    In this example, reactor core stray loss is described.

  3. 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 …

  4. 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…

  5. 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 rel…

  6. 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…

  7. 232 – Reactor Joule Loss Analysis

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

  8. 206 – Temperature Analysis of an Oil-Immersed Transformer Using a Coupled Magnetic Field and Thermal Fluid Analysis

    OverviewLarge power transformers are used to transform high voltage power generated at a power station into power that can be transmitted. For the structure of the transformer, oi…

  9. 204 – Copper Loss Reduction Effect Analysis of Switching Transformers using Litz Wire

    OverviewFlyback converters are used for various applications such as power supply circuits, which is suitable for small electrical power that realizes switching power supply. Sinc…

  10. 185 – Analysis of Stray Loss in a Power Transformer

    OverviewTransformers are made to be used long-term, so it has become an important design policy to control running costs from losses. These losses include copper loss in the coil …

  11. 184 – Reactor Sound Pressure Analysis taking Magnetostriction into Account

    OverviewReactors are used in all sorts of systems related to power systems. For example, they fill the role of making the current pulsation between an inverter and a motor smoothe…

  12. 107 – Current voltage characteristics analysis of flyback converters

    OverviewDC-DC converters such as flyback converters control current of primary / secondary winding with switch operation, and transmit electrical power on the load side using diod…

  13. 151 – Insulation Evaluation Analysis of a Power Transformer

    OverviewA transformer is an electrical device that uses electromagnetic induction to convert the voltage level of alternating current power. Among transformers, power transformers…

  14. 152 – Electromagnetic Force Analysis of Short-circuited Power Transformer Coils

    OverviewA transformer is an electrical device that uses electromagnetic induction to convert the voltage level of alternating current power. Electromagnetic force is produced by t…

  15. 158 – Superimposed Direct Current Characteristic Analysis of a Reactor That Accounts for Minor Hysteresis Loops

    OverviewHigh-frequency reactors used in equipment like DC-DC converters have a high-frequency current accompanying the switching direct current. The reactor's performance requires…

  16. 146 – Analysis of Stray Loss in a Transformer

    This Application Note explains how to obtain losses in a transformer tank and use them to evaluate the temperature distribution in each part.

Search Filter