Core loss analysis of Finemet type nanocrystalline alloy ribbon with different thickness

Li, Zhun; Yao, Kefu; Li, Deren; Ni, Xiaojun; Lu, Zhichao

doi:10.1016/j.pnsc.2017.09.002

Cited by 40 publications

(11 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The magnetic domain structure was examined by magneto-optical Kerr microscope and it was found that the main domains are typically a few hundred of µm long and just a few µm wide, separated by 180 • walls, while some parts of the FINEMET ribbon have a labyrinth-like domain structure. Such results are congruent with previous literature data [44,45]. It was previously shown that the domain structure would suffer certain transformations owing to the sample size, induction amplitude, as well as other conditions and/or parameters [45][46][47][48], leading to difficulties concerning total magnetic losses separation.…”

Section: Resultssupporting

confidence: 92%

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Petrescu

Cazacu

et al. 2021

Materials

View full text Add to dashboard Cite

Soft magnetic materials are at the core of electromagnetic devices. Planar transformers are essential pieces of equipment working at high frequency. Usually, their magnetic core is made of various types of ferrites or iron-based alloys. An upcoming alternative might be the replacement the ferrites with FINEMET-type alloys, of nominal composition of Fe73.5Si13.5B9Cu3Nb1 (at. %). FINEMET is a nanocrystalline material exhibiting excellent magnetic properties at high frequencies, a soft magnetic alloy that has been in the focus of interest in the last years thanks to its high saturation magnetization, high permeability, and low core loss. Here, we present and discuss the measured and modelled properties of this material. Owing to the limits of the experimental set-up, an estimate of the total magnetic losses within this magnetic material is made, for values greater than the measurement limits of the magnetic flux density and frequency, with reasonable results for potential applications of FINMET-type alloys and thin films in high frequency planar transformer cores.

show abstract

Section: Resultssupporting

confidence: 92%

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Petrescu

Cazacu

et al. 2021

Materials

View full text Add to dashboard Cite

show abstract

“…To reduce ESR, even if the filter size is bigger than that of the electrolytic capacitor, a film capacitor of K3490070106K0L155 manufactured by KENDEIL is employed in the prototype converter. To reduce the core loss, to prevent saturation, and to obtain better temperature performance than that of ferrite cores below the operating frequency of 20 kHz, a nano-crystalline core of TC-1308040-1 manufactured by AVERTEC [28] is used as the material for the transformer core [29][30][31]. The TMS320F28335 is used as a digital controller.…”

Section: Resultsmentioning

confidence: 99%

Practical Controller Design of Three-Phase Dual Active Bridge Converter for Low Voltage DC Distribution System

Choi¹,

Lee²,

Jung

2020

Electronics

View full text Add to dashboard Cite

In a low voltage DC (LVDC) distribution system, isolated bi-directional DC-DC converters are key devices to control power flows. A three-phase dual-active-bridge (3P-DAB) converter is one of the suitable candidates due to inherent soft-switching capability, low conduction loss, and high-power density. However, the 3P-DAB converter requires a well-designed controller due to the influence of the equivalent series resistance (ESR) of an output filter capacitor, degrading the performance of the 3P-DAB converter in terms of high-frequency noise. Unfortunately, there is little research that considers the practical design methodology of the 3P-DAB converter’s controller because of its complexity. In this paper, the influence of the ESR on the 3P-DAB converter is presented. Additionally, the generalized average small-signal model (SSM) of the 3P-DAB converter including the ESR of the capacitive output filter is presented. Based on this model, an extended small-signal model and appropriate controller design guide, and performance comparison are presented based on the frequency domain analysis. Finally, experimental results verify the validity of the proposed controller using a 25 kW prototype 3P-DAB converter.

show abstract

“…There is large difference between the measured and calculated core loss. The said difference is more for cores of larger ribbon thickness and/or at higher frequency of primary excitation [18]. To match the actual core loss a new component of magnetic loss i.e., the excess eddy current loss P ex [17]- [21] has been introduced.…”

Section: B: Core Loss Characteristics Of Ihtmentioning

confidence: 99%

Emulating Full Load Testing of Air-cooled Nanocrystalline IHT at Zero Power

Paul¹

2021

Preprint

View full text Add to dashboard Cite

High-power high-frequency air-cooled induction heating transformers, mostly used as current multiplier and isolation purposes, are custom designed. For their reliable performance and long life, the thermal evaluation at rated load is necessary. Creating an equivalent load as test facility for reliability testing of such type of transformer is difficult. Characteristics of such loads drastically change after Curie temperature. Moreover, prolonged heating could increase the nearby ambient temperature and, more importantly, the traditional heat run test wastes large amount of energy. Whenever the coil is energized, windings of transformer draw respective rated current; even at no load condition the copper loss is at rated value. While both windings drawing rated current at desired frequency, using the concept of localized eddy current loss as well as excess eddy current loss, this article proposes a novel method to inject requisite core loss to the magnetic circuit to emulate the characteristics of full load condition but the power drawn from the transformer would be zero. The proposed idea would be validated where only 200W resonant inverter would be used to inject power loss equivalent to full-load condition of 30 kW transformer to emulate the heat run test

show abstract

Core loss analysis of Finemet type nanocrystalline alloy ribbon with different thickness

Cited by 40 publications

References 28 publications

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Practical Controller Design of Three-Phase Dual Active Bridge Converter for Low Voltage DC Distribution System

Emulating Full Load Testing of Air-cooled Nanocrystalline IHT at Zero Power

Contact Info

Product

Resources

About