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Estimation of Leakage Inductance in High-frequency Three-Winding Transformers for Electric Vehicle On-board Chargers
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| Author(s) |
Ioannis KOUGIOULIS, Amedeo VANNINI, Anirban PAL, Pat WHEELER, Md Rishad AHMED |
| Abstract |
This paper reviews several methods to estimate the equivalent circuit model parameters of high frequency three-winding transformers, considering measurement accuracy and tolerance to measurement errors. First, several equivalent circuit models of the three winding transformer are reviewed and different methods to estimate the model parameters are investigated. A sensitivity analysis is performed to evaluate the accuracy of each method and its tolerance to measurement errors. In addition, transformer designs with E-cores and U-cores are simulated in ANSYS and their leakage inductance parameters are estimated for various winding arrangements. A three-winding transformer for EV charger application is simulated and the impact of the transformer model on theconverter operation is discussed. Finally, a three-winding transformer prototype is built and tested to compare the accuracy of each estimation method with respect to the 3-D FE simulations. The comparison shows that methods based on one-port impedance measurements yield the most accurate estimation results. |
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| Filename: | 0314-epe2023-full-11164300.pdf |
| Filesize: | 1.919 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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