Abstract
This paper presents a high-fidelity finite-element modeling technique for magnetic hysteresis and eddy current losses in toroid inductors. The method is based on the separation of ferromagnetic loss characteristics into two components: A quasi-static hysteresis component and a dynamic eddy current component. The Preisach model is used to describe the quasi-static magnetic hysteresis behavior of the core, providing strong guarantees on the reproducibility of the experimentally measured characteristics. This model is used to represent the magnetic field constitutive relationships within a finite-element framework combining the effects of hysteresis and eddy currents in a unified dynamic simulation. The finite-element model of the toroid is used as a high-order inductor model coupled to a resonant circuit simulation. The modeling technique is validated through experimental measurements on two different series RLC circuits. The first circuit is based on an M19 electrical steel toroid having resonant frequency near 200 Hz. The second circuit is based on a T38 ferrite toroid having a resonant frequency near 10 kHz. The models agree closely with the measured voltages, currents, and losses. The models also successfully predict discontinuities in the measured frequency responses due to the existence of bistable operating regimes.
| Original language | English |
|---|---|
| Article number | 8686166 |
| Pages (from-to) | 1703-1714 |
| Number of pages | 12 |
| Journal | IEEE Journal of Emerging and Selected Topics in Power Electronics |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2019 |
Funding
The authors would like to thank S. Zheng and Z. J. Wang from Oak Ridge National Laboratory for their assistance with the experimental setups and B. Ozpineci for his managerial support. They would like to thank S. Rogers from the Department of Energy Vehicle Technology Office for her support. This material is based upon work supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technology Office, under contract number DE-AC05-00OR22725. This research used resources at the Power Electronics and Electric Machinery Research Facility, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. Manuscript received January 22, 2019; revised March 8, 2019; accepted March 10, 2019. Date of publication April 11, 2019; date of current version July 31, 2019. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doepublic-access-plan). Recommended for publication by Associate Editor Jun Wang. (Corresponding author: Jason Pries.) J. Pries, E. Gurpinar, and T. A. Burress are with the Electrical and Electronic Systems Research Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830 USA (e-mail: [email protected]). L. Tang is with Karma Automotive LLC, Irvine, CA 92618 USA.
| Funders | Funder number |
|---|---|
| US Department of Energy | |
| U.S. Department of Energy | |
| Office of Energy Efficiency and Renewable Energy | DE-AC05-00OR22725 |
Keywords
- Circuits
- RLC
- eddy currents
- finite-element methods
- magnetic hysteresis
- magnetic losses