Transformer / Reactor
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[JAC146] 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.
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[JAC158] Superimposed Direct Current Characteristic Analysis of a Reactor That Accounts for Minor Hysteresis Loops
This Application Note presents the use of the frozen permeability condition to obtain the superimposed direct current characteristic that includes minor hysteresis loops of a high…
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[JAC152] Electromagnetic Force Analysis of Short-circuited Power Transformer Coils
This analysis uses different coil positions to evaluate the Lorentz force density and electromagnetic force produced in the coils during a short circuit in order to confirm the ef…
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[JAC184] Reactor Sound Pressure Analysis taking Magnetostriction into Account
These notes will conduct an analysis of changed vibratory force and show a case study of confirming the impact magnetostriction has on vibration noise.
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[JAC185] Analysis of Stray Loss in a Power Transformer
This note obtains loss distribution for each component in drive condition and checks local overheating.
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[JAC204] Copper Loss 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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[JAC206] 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…
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[JAC232] Reactor Joule Loss Analysis
In this example, investigating Joule loss with respect to the positions of air gaps in a reactor is presented.
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[JAC238] 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…
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[JAC202] 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…
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[JAC221] Confirmation of the Influence from 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…
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[JAC254] 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…
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[JAC151] Insulation Evaluation Analysis of a Power Transformer
In this example, how to obtain the electric field intensity distribution when a lightning strike or short circuit occurs and the assumed maximum voltage is applied to the winding.
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[JAC032] Analysis of a Transformer
In this example, the use of a magnetic field analysis to evaluate changes in the secondary voltage caused by load variations in a low frequency transformer.
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[JAC107] Current voltage characteristics analysis of flyback converters
In this example, this case study obtains the current waveform of the primary / secondary winding and the core magnetic flux density distribution, current density distribution insi…
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[JAC235] Reactor Core Stray Loss Analysis
In this example, reactor core stray loss is described.
