Application examples with Model Files available

Field loss in power transformers (TEAM 21a)

Stray-field loss in power transformer

Three phase transformer

Improved iron loss prediction in transformers

Shielding can be used to substantially reduce magnetic field strengths outside of a transformer. Considerations, such as its electric properties and geometry, are needed to determine the type of shielding required.Presented here is MagNet'sanalysis of the second set of configurations from the family of benchmarks involving two exciting coils directed in opposite directions and shielded by a non-magnetic steel plate. The steel plate has four configurations; no slot, one slot, two slots and three slots. The eddy current losses are compared in all configurations to measured results. By taking advantage of symmetry present in the geometry, only a quarter of the model can be modelled which decreases the time required to complete the simulation.

The following is based on the Testing Electromagnetic Analysis Methods (TEAM) Problem #21: 3-D Stray Field Loss Model: Benchmark Family. The benchmark can be found on the International Compumag Society's website (TEAM Problems).

Open Report (Model 0130)

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Shielding can be used to substantially reduce magnetic field strengths outside of a transformer. The electric properties and geometry determine what type of shielding is required. The focus of this example is calculating stray-field loss in a shielding plate.

The following is based on the Testing Electromagnetic Analysis Methods (TEAM) problem #21: 3-D Stray Field Loss Model. The benchmark can be found on the International Compumag Society's website (TEAM Problems).

Open Report (Model 0135)

Request MagNet model files - Model Number 0135

The model presented here is the simulated results of the ohmic losses and flux density of a 3 phase transformer with a three limbed paramagnetic core. The symmetry in the z-axis has been used to minimize the problem size and accelerate solution time. The coils are made of three concentric layers of different thickness.

Open Report (Model 0183)

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Accurate iron loss prediction with minimal solution-time is desirable in power transformer design. However, it requires accurate treatment of nonlinearities, which are rigorously handled by Simcenter MAGNET's transient solvers at the cost of longer solution-times. The sheer size of these power devices and the inherent 3D analyses, further increases the solution-time significantly. This example shows that a Simcenter MAGNET time-harmonic solver can predict the same iron loss as a transient solver within a fraction of the time. A 90% reduction in solution-time was achieved in this example of a 100 kVA single-phase distribution transformer.

Open Report (Model 0212)

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Application Examples - Transformers

Other application examples (report only)

Field loss in power transformer (TEAM 21)

Stray loss reduction of a power transformer by employing wall shunts

Ohmic losses in transformer clamping plates

Open Report (Model 0134)

Open Report (Model 0192)

Open Report (Model 0197)