Comparing Two Topology Transformer Hysteresis Models with Power Transformers

Aktivität: Vortrag oder PräsentationPosterpräsentationScience to science


Power transformer modelling and simulation requires detailed material and design information. However, this detailed information
about a transformer is usually not entirely available. Therefore, we use a supplemental single-phase excitation setup (saturation
test) to measure the transformer core hysteresis characteristic at elevate voltages. Only transformer parameters from the factory
acceptance test and very few design data is used to set up the topology transformer models. In topology-correct models each section
of the core is represented separately. Also the different off-core (leakage) flux paths can be included in the models. In this study we
compare two transformer topology models in the electric domain with measurements from a 3-limb 2-winding, 50 kVA transformer in
YNyn0 vector group. The first model uses the capacitance-permeance analogy to model the transformer. The second model uses the
principle of duality of electric and magnetic circuits together with the Jiles-Atherton (JA) model for the hysteresis implementation.
The hysteresis model parameters in both models are identified with the Nelder-Mead Simplex algorithm. We have found that both
transformer topology models can reproduce the measured current waveforms during the no-load and saturation test with very good
accuracy. The active and reactive power deviation between the capacitor-permeance model and the measurements are below 10 %,
and for the JA model below 17 % for the no-load and the saturation test.
Zeitraum16 Jan. 2022
Ereignistitel23rd International Conference on the Computation of Electromagnetic Fields: COMPUMAG 2022
OrtCancun, MexicoAuf Karte anzeigen


  • Magnetic Hysteresis
  • Gyrators
  • Power Transformers
  • Transformer cores

Fields of Expertise

  • Advanced Materials Science
  • Information, Communication & Computing