Modelling of DC-Bias Stable Chokes Based on Nanocrystalline Fe73Si16B7Cu1Nb3 Cores
B. S. Baitaliuk, V. K. Nosenko, O. V. Oliinyk, O. M. Semyrga
G. V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
Received: 16.01.2025; final version - 07.04.2025. Download: PDF
The application of the nanocrystalline Fe73Si16B7Cu1Nb3 alloy for the fabrication of toroidal-core inductors (chokes) operating under DC-bias conditions is investigated. The influence of the Fe73Si16B7Cu1Nb3-alloy properties, particularly, its high magnetic permeability and thermal stability of magnetic properties, on the choke characteristics is studied. A novel calculation method for the dimensions and number of turns of toroidal chokes, considering specified parameters and operating modes, is proposed. This method incorporates the analytical and numerical techniques to determine the optimal core dimensions and number of wire turns, ensuring minimal losses and high choke efficiency. This efficiency manifests itself in reduced energy losses, improved size and weight characteristics, enhanced manufacturability, and ensuring stable choke operation under various operating modes. A software algorithm for automated calculation of choke parameters is developed, enabling rapid and accurate calculations, considering all key parameters such as inductance, operating flux density, and wire cross-section. An analysis of the influence of the number of wire turns and the magnetic permeability of the Fe73Si16B7Cu1Nb3 alloy on the geometrical dimensions, weight, and electro-magnetic losses of the chokes is performed. The proposed method allows for optimizing the choke design, reducing their weight and cost that is crucial for industrial applications, especially, in areas, where compact and efficient inductive components with low losses are required.
Key words: nanocrystalline alloy, inductors/chokes, DC bias, magnetic permeability, toroidal core.
URL: https://mfint.imp.kiev.ua/en/abstract/v47/i07/0675.html
DOI: https://doi.org/10.15407/mfint.47.07.0675
PACS: 07.05.Tp, 75.50.Bb, 75.50.Tt, 84.30.Bv, 84.30.Vn, 84.32.Hh, 85.70.Ay
Citation: B. S. Baitaliuk, V. K. Nosenko, O. V. Oliinyk, and O. M. Semyrga, Modelling of DC-Bias Stable Chokes Based on Nanocrystalline Fe73Si16B7Cu1Nb3 Cores, Metallofiz. Noveishie Tekhnol., 47, No. 7: 675-701 (2025)