Journal Article10.1109/TPEL.2013.2286830
New Core Loss Measurement Method for High-Frequency Magnetic Materials
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TL;DR: In this paper, a new method is proposed for high-frequency core loss measurement that utilizes capacitive cancellation, which is suitable for HF and VHF core loss measurements, and it greatly reduces the sensitivity to phase discrepancy, the dominating error source in the conventional two-winding method.
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Abstract: Magnetic core loss is an important concern for power converters. As the switching frequency increases and converter size reduced, the core loss will have significant impact to the converter efficiency and temperature. Accurate evaluation is important for magnetic design and converter loss estimation. The classic two-winding method is limited to low frequencies (usually below 1 MHz) because it is sensitive to phase discrepancy. In this paper, a new method is proposed for high-frequency core loss measurement that utilizes capacitive cancellation, which is suitable for HF and VHF core loss measurement. The new method greatly reduces the sensitivity to phase discrepancy, which is the dominating error source in the conventional two-winding method. An experimental demonstration is performed at 10 MHz, and the possible errors are analyzed in detail. With the proposed method, the high-frequency core loss can be accurately measured.
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Citations
共振法による圧粉材料の高周波損失測定
Yoshio Uehara,Kenji Kawano,Yuki Sato,Satoshi Okamoto +3 more
TL;DR: The Resonant Method is a novel technique for measuring core losses in metal composite toroidal cores up to 40 MHz.
Transfer Learning Methods for Magnetic Core Loss Modeling
Evan Dogariu,Haoran Li,Diego Serrano Lopez,Shukai Wang,Min Luo,Minjie Chen +5 more
TL;DR: This paper applies transfer learning to magnetic core loss modeling, leveraging a dataset to retrain a neural network for modeling core losses of different magnetic materials or excitations with reduced data, improving performance and efficiency.
Time Domain Analysis for Measuring Core Losses in Inductive Elements for Power Electronics: An Investigation Study
Maciej Chojowski,Marcin Baszyński,A. Dziadecki,Roman Dudek,Andrzej Stobiecki +4 more
TL;DR: A method to measure core losses in inductive elements for power electronics based on time-domain analysis and inductance model. The method eliminates the need for additional EMF-measuring winding and enables accurate loss measurement under square-wave voltage excitation.
Core Loss Separation Method for High Q Inductors
Aaron Wadsworth,Wenting Zhang,Matthew G. S. Pearce,Duleepa J. Thrimawithana,Luyang Zhao,Zongzhen Li +5 more
- 08 May 2024
TL;DR: High Q inductor core loss separation method with improved phase correction. The proposed method has lower error than existing state-of-the-art techniques.
Modeling Frequency-Dependent Core Loss of Ferrite Materials Using Permeance–Capacitance Analogy for System-Level Circuit Simulations
TL;DR: In this paper, the authors proposed an approach to model the core loss of ferrite materials combining both frequency-dependent relaxation effect and frequency-independent hysteresis, which can be flexibly applied for various operation conditions with good accuracy.
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