期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 37, 期 12, 页码 15152-15162出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2022.3189671
关键词
Dielectric losses; ferrite; magnetic losses; magnetic materials; permeability measurement; permittivity
Manganese-zinc ferrites are preferred for high-frequency and high-power magnetic components. However, manufacturers' material specifications lack sufficient information for design optimization. This article proposes a method to determine the properties of Mn-Zn ferrite and provides experimental frequency characteristics for four ferrite materials. The impacts of physical size, temperature, and force on ferrite properties are also considered.
Manganese-zinc (Mn-Zn) ferrites are the primary choice for high-frequency and high-power magnetic components. Optimum material selection is essential for high-performance magnetic component design. However, the manufacturers' material specifications usually do not provide sufficient information to optimize the design. Complex permeability and permittivity, as well as specific power loss, are typically provided as one value, regardless of the core shape and size. Magnetic component design based on these incomplete specifications can result in a poorly optimized component. This article proposes methods to determine the properties ofMn-Zn ferrite at high frequencies, with tests up to 20MHz. This article also presents experimental complex permeability and permittivity frequency characteristics for four ferrite materials: 3E10, 3F36, 3E65, and 3C95. The resulting fitted parameters for the equivalent-circuit model can be used in any design algorithm or simulation tool. The impacts of physical size, temperature and force on complex permeability and permittivity are also considered.
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