Design and Optimization of Energy Storage Inductor for High Power High-Frequency DC-DC Converter

Li, Xinru; Ghosh, Saikat; Tripathi, Prabhat Ranjan; Li, Teng

doi:10.1109/wipdaasia.2018.8734677

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…Featured as high saturation current and good DC bias performance, powder cores are widely applied in DC inductors. Our previous research has introduced the nanocrystalline based soft magnetic composite (SMC) with a competitive core loss under high-frequency operations [4], [9]. Along with the superior magnetic properties, the robust mechanical properties of powder cores allow for machining to tailor the core shape.…”

Section: Introductionmentioning

confidence: 99%

Toroidal Nanocrystalline Powder Core With Trapezoidal Cross Section

Shillaber

Luo

et al. 2023

IEEE Trans. Magn.

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This article introduces a toroidal nanocrystalline powder core with a trapezoidal cross section. The nonuniform magnetic flux distribution of toroidal cores with different cross-sectional geometries is discussed, the inductance equations are derived, and the geometrical optimization factor is given in order to retain the highest possible inductance value while minimizing material usage. A ten-turn coil is wound on the core, with the measured inductance values showing a good match with both finite element method (FEM) and mathematical calculation. The near-field electromagnetic interference (EMI) radiation in close proximity to the inductor is investigated by both FEM and experimental validation, and the toroidal core with a trapezoidal cross section has shown reduced EMI. By adopting a trapezoidal cross section for the toroidal core, a 30% reduction in material usage and lower EMI are achieved, albeit with a compromise of 14% in inductance.

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Section: Introductionmentioning

confidence: 99%