The Experts below are selected from a list of 225174 Experts worldwide ranked by ideXlab platform
David J Perreault - One of the best experts on this subject based on the ideXlab platform.
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Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency
IEEE Transactions on Power Electronics, 2016Co-Authors: Alex J. Hanson, Julia A. Belk, Seungbum Lim, Charles R Sullivan, David J PerreaultAbstract:The design of power Magnetic components for operation at high frequency (HF, 3-30 MHz) has been hindered by a lack of Magnetic material performance data and by the limited design theory in that frequency range. To address these deficiencies, we have measured and present core loss data for a variety of commercially available Magnetic Materials in the HF range. In addition, we extend the theory of performance factor for appropriate use in the HF design. Since Magnetic Materials suitable for HF applications tend to have low permeability, we also consider the impact of low permeability on design. We conclude that, with appropriate material selection and design, increased frequencies can continue to yield improved power density well into the HF regime.
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Evaluation of Magnetic Materials for Very High Frequency Power Applications
IEEE Transactions on Power Electronics, 2012Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of RF Magnetic Materials for power conversion applications in the 10 to 100 MHz range. A measurement method is proposed that provides a direct measurement of an inductor quality factor QL as a function of inductor current at RF frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of several commercial RF Magnetic-core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The use of the method and data is demonstrated in the design of a Magnetic-core inductor, which is applied in a 30-MHz inverter. The results of this paper are thus useful for the design of Magnetic components for very high frequency applications.
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Evaluation of Magnetic Materials for very high frequency power applications
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of several commercial rf Magnetic Materials forpower conversion applications in the 10 MHz to 100 MHz range. A measurement method is proposed that provides a direct measurement of inductor quality factor QL as a function of inductor current at rf frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of different commercial rf Magnetic core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The results of this paper are thus useful for design of Magnetic components for very high frequency applications.
Ricardo A. Depine - One of the best experts on this subject based on the ideXlab platform.
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a new condition to identify isotropic dielectric Magnetic Materials displaying negative phase velocity
Microwave and Optical Technology Letters, 2004Co-Authors: Ricardo A. DepineAbstract:The derivation of a new condition for characterizing isotropic dielectric-Magnetic Materials exhibiting negative phase velocity, and the equivalence of that condition with previously derived conditions, are pre-
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a new condition to identify isotropic dielectric Magnetic Materials displaying negative phase velocity
arXiv: Optics, 2003Co-Authors: Ricardo A. DepineAbstract:The derivation of a new condition for characterizing isotropic dielectric-Magnetic Materials exhibiting negative phase velocity, and the equivalence of that condition with previously derived conditions, are presented.
Charles R Sullivan - One of the best experts on this subject based on the ideXlab platform.
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Measurements and Performance Factor Comparisons of Magnetic Materials at High Frequency
IEEE Transactions on Power Electronics, 2016Co-Authors: Alex J. Hanson, Julia A. Belk, Seungbum Lim, Charles R Sullivan, David J PerreaultAbstract:The design of power Magnetic components for operation at high frequency (HF, 3-30 MHz) has been hindered by a lack of Magnetic material performance data and by the limited design theory in that frequency range. To address these deficiencies, we have measured and present core loss data for a variety of commercially available Magnetic Materials in the HF range. In addition, we extend the theory of performance factor for appropriate use in the HF design. Since Magnetic Materials suitable for HF applications tend to have low permeability, we also consider the impact of low permeability on design. We conclude that, with appropriate material selection and design, increased frequencies can continue to yield improved power density well into the HF regime.
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Evaluation of Magnetic Materials for Very High Frequency Power Applications
IEEE Transactions on Power Electronics, 2012Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of RF Magnetic Materials for power conversion applications in the 10 to 100 MHz range. A measurement method is proposed that provides a direct measurement of an inductor quality factor QL as a function of inductor current at RF frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of several commercial RF Magnetic-core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The use of the method and data is demonstrated in the design of a Magnetic-core inductor, which is applied in a 30-MHz inverter. The results of this paper are thus useful for the design of Magnetic components for very high frequency applications.
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Evaluation of Magnetic Materials for very high frequency power applications
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of several commercial rf Magnetic Materials forpower conversion applications in the 10 MHz to 100 MHz range. A measurement method is proposed that provides a direct measurement of inductor quality factor QL as a function of inductor current at rf frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of different commercial rf Magnetic core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The results of this paper are thus useful for design of Magnetic components for very high frequency applications.
David J. Sellmyer - One of the best experts on this subject based on the ideXlab platform.
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novel nanostructured rare earth free Magnetic Materials with high energy products
Advanced Materials, 2013Co-Authors: Balamurugan Balasubramanian, Ralph Skomski, Bhaskar Das, Wenyong Zhang, David J. SellmyerAbstract:Novel nanostructured Zr2 Co11 -based Magnetic Materials are fabricated in a single step process using cluster-deposition method. The composition, atomic ordering, and spin structure are precisely controlled to achieve a substantial Magnetic remanence and coercivity, as well as the highest energy product for non-rare-earth and Pt-free permanent-magnet alloys.
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nanoscale Magnetic Materials and applications
2009Co-Authors: Ping J Liu, O Gutfleisch, Eric E Fullerton, David J. SellmyerAbstract:Spin Dynamics: Fast Switching of Macro-spins.- Core-Shell Magnetic Nanoclusters.- Designed Magnetic Nanostructures.- Superconductivity and Magnetism in Silicon and Germanium Clathrates.- Neutron Scattering of Magnetic Materials.- Tunable Exchange Bias Effects.- Dynamics of Domain Wall Motion in Wires with Perpendicular Anisotropy.- Magnetic Nanowires for Domain Wall Logic and Ultrahigh Density Data Storage.- Bit-Patterned Magnetic Recording: Nanoscale Magnetic Islands for Data Storage.- The Magnetic Microstructure of Nanostructured Materials.- Exchange-Coupled Nanocomposite Permanent Magnets.- High-Temperature Samarium Cobalt Permanent Magnets.- Nanostructured Soft Magnetic Materials.- Magnetic Shape Memory Phenomena.- Magnetocaloric Effect and Materials.- Spintronics and Novel Magnetic Materials for Advanced Spintronics.- Growth and Properties of Epitaxial Chromium Dioxide (CrO2) Thin Films and Heterostructures.- FePt and Related Nanoparticles.- Magnetic Manipulation of Colloidal Particles.- Applications of Magnetic Nanoparticles in Biomedicine.- Nano-Magnetophotonics.- Hard Magnetic Materials for MEMS Applications.- Solid-State Magnetic Sensors for Bioapplications.
Yehui Han - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Magnetic Materials for Very High Frequency Power Applications
IEEE Transactions on Power Electronics, 2012Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of RF Magnetic Materials for power conversion applications in the 10 to 100 MHz range. A measurement method is proposed that provides a direct measurement of an inductor quality factor QL as a function of inductor current at RF frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of several commercial RF Magnetic-core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The use of the method and data is demonstrated in the design of a Magnetic-core inductor, which is applied in a 30-MHz inverter. The results of this paper are thus useful for the design of Magnetic components for very high frequency applications.
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Evaluation of Magnetic Materials for very high frequency power applications
2008 IEEE Power Electronics Specialists Conference, 2008Co-Authors: Yehui Han, Charles R Sullivan, G. Cheung, David J PerreaultAbstract:This paper investigates the loss characteristics of several commercial rf Magnetic Materials forpower conversion applications in the 10 MHz to 100 MHz range. A measurement method is proposed that provides a direct measurement of inductor quality factor QL as a function of inductor current at rf frequencies, and enables indirect calculation of core loss as a function of flux density. Possible sources of error in measurement and calculation are evaluated and addressed. The proposed method is used to identify loss characteristics of different commercial rf Magnetic core Materials. The loss characteristics of these Materials, which have not previously been available, are illustrated and compared in tables and figures. The results of this paper are thus useful for design of Magnetic components for very high frequency applications.
