Thermal profile shaping and loss impacts of strain annealing on magnetic ribbon cores

Beddingfield, Richard; Bhattacharya, Subhashish; Byerly, Kevin; Simizu, S.; Leary, Alex; McHenry, M. E.; Ohodnicki, Paul R.

doi:10.1557/jmr.2018.157

Cited by 11 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…... as defined in (5) as the independent geometric parameters, in addition to k1,…, kn, which are permeability multipliers as defined in (14). The number of multipliers to be optimized is defined by the user.…”

Section: A Inductor Optimization Paradigmmentioning

confidence: 99%

Multiobjective Optimization Paradigm for Toroidal Inductors With Spatially Tuned Permeability

Nascimento

Moon

Byerly

et al. 2021

IEEE Trans. Power Electron.

Self Cite

View full text Add to dashboard Cite

Spatially tuning core permeability of an electromagnetic device enables superior performance. A permeability profile can be heuristically selected to improve the flux distribution in a device with a given geometry, but in order to fully leverage the capacity of spatial dependent permeability engineering, the geometry and the permeability should be optimized simultaneously. The work herein presented sets forth a multi-physics design optimization paradigm that includes the permeability profile tuning in the context of both inductor and converter design. This approach enables the determination of Pareto optimal fronts consisting of a set of optimal solutions against competing objectives (e.g. mass and loss) under imposed constraints. To this end, computationally efficient analytical solutions of the heat transfer and electromagnetic formulations are derived for toroidal inductors, which are validated with Finite Element Analysis based simulations. The software implemented in Matlab 2018b is available online as an attachment to this paper.

show abstract

Section: A Inductor Optimization Paradigmmentioning

confidence: 99%

Multiobjective Optimization Paradigm for Toroidal Inductors With Spatially Tuned Permeability

Nascimento

Moon

Byerly

et al. 2021

IEEE Trans. Power Electron.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Using the ability to vary applied tension as a function of ribbon length, for example, a resulting spatially varying permeability can yield important benefits in smoothing flux distributions in a power magnetic component to minimize peak temperature rise and reduce overall power losses. [ 7,20 ]…”

Section: Introductionmentioning

confidence: 99%

“…example, a resulting spatially varying permeability can yield important benefits in smoothing flux distributions in a power magnetic component to minimize peak temperature rise and reduce overall power losses. [7,20] Recently, we have comprehensively reviewed electromagnetic heating on amorphous and nanocrystalline alloys by means of different processing approaches across relevant frequency ranges including techniques such as Joule heating, radio-frequency (RF) induction heating, microwave heating, and laser-assisted surface heating. [3] Among these techniques, RF induction heating and laser annealing can provide viable and attractive pathways to exploit unprecedented properties enabling localized and well-controlled thermal profiles of nanocrystalline alloys, which may yield new design parameters not previously accessible through traditional annealing while being fully compatible for in-line reel-to-reel production facilities.…”

Section: Introductionmentioning

confidence: 99%

Radio‐Frequency Rapid Thermal Processing Enabling Spatial Phase Transformation and Nanocrystallization of Soft Magnetic Amorphous Alloys

et al. 2022

View full text Add to dashboard Cite

Thermal processing of soft magnetic amorphous and nanocrystalline alloys is explored under the influence of radio‐frequency induction‐heating techniques. Direct induction‐heating concepts based on longitudinal and transverse flux heating are examined and the details of electromagnetic fields interaction with metallic strips are discussed by analytical calculations as well as finite element analysis. Initial experimental results confirming spatial control of phase transformations and nanocrystallization within a single strip of Finemet Fe‐based amorphous ribbons are reported. The degree to which primary and secondary crystallization temperature are achieved depends on the spacing between the ribbon relative to the induction coil as well as the coil design and configuration. For transverse coil configurations, the local temperature and therefore microstructural evolution is different across the lateral dimension of processed ribbons, with reduced gap sizes producing enhanced peak temperatures and larger temperature distributions with greater spatial variation in microstructure. In addition, indirect susceptor‐based induction heating under tension is performed and the impact of microstructure is demonstrated. Herein, potential for exploiting spatially optimized phase transformations is illustrated through electromagnetic field–assisted processing in a scalable manufacturing process with amorphous and nanocrystalline soft magnetic alloys.

show abstract

Surface oxidation and crystallization of FeNi-Based soft magnetic nanocrystalline and amorphous nanocomposite alloys

Ohodnicki

Egbu

et al. 2020

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Thermal profile shaping and loss impacts of strain annealing on magnetic ribbon cores

Abstract: Abstract

Cited by 11 publications

References 23 publications

Multiobjective Optimization Paradigm for Toroidal Inductors With Spatially Tuned Permeability

Multiobjective Optimization Paradigm for Toroidal Inductors With Spatially Tuned Permeability

Radio‐Frequency Rapid Thermal Processing Enabling Spatial Phase Transformation and Nanocrystallization of Soft Magnetic Amorphous Alloys

Surface oxidation and crystallization of FeNi-Based soft magnetic nanocrystalline and amorphous nanocomposite alloys

Contact Info

Product

Resources

About