A modified analytical method for core losses calculation in magnetic laminations for a wide range of frequency and flux density

Takbash, A. M.; Pillay, Pragasen

doi:10.1109/iemdc.2015.7409200

Cited by 13 publications

(7 citation statements)

References 17 publications

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“…Discussions such as in Refs. [8,[24][25][26][27][28][29] are restricted to mathematical modelling that does not consider the complex interaction of impact factors such as anisotropy, nonlinearity and hysteresis. Concerning experimental measurements, some work is reported in Ref.…”

Section: Instantaneous Magnetization Powermentioning

confidence: 99%

Time‐averaged and instantaneous magnetic loss characteristics of different products of electrical steel for frequencies of 16 2/3 Hz up to 500 Hz

Shilyashki

Pfützner

Bengtsson³

et al. 2022

IET Electric Power Appl

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Traditionally, products of electrical SiFe steel are focussed on applications for frequencies of 50-Hz. However, the recent developments of electric drive systems yielded a strong extension of the range from f = 16 2/3 Hz up to ca. 500 Hz. In spite of high industrial relevance, the literature offers the corresponding data on the material's magnetic energy losses in very rare ways. This paper reports a first comparative, multi-parametric study on eight different steel products that comprise non-oriented steels (NO), grain-oriented steels (GO) and scribed grain-oriented steels (SGO). Consistently at IEC-standardized samples, they were analysed for the whole frequency range that was split into low frequency (LF) and medium frequency (MF), with 80 Hz as the border. Data is presented on time-averaged total losses P, on the corresponding hysteresis losses P H and eddy current losses P E . LF proved to be governed by P H and MF rather by P E , however, with strong variations. Further, instantaneous magnetization power functions p(φ) were determined for basic insights into the involved temporal developments of energy dissipation. GOsteels yielded profiles close to rectified co-sinus functions that can be fully attributed to dissipative losses. On the other hand, p(t) of NO-steels and SGO-steels prove to include negative segments that reflect potential energy power, in the course of alignments of atomic moments in instants of high induction. Examples of industrial relevance of the accumulated data are steel production technology, product categorization, failure tracing and energy conversion. K E Y W O R D Seddy current effects, grain orientation, hysteresis losses, instantaneous losses, instantaneous power, magnetization power, silicon iron | INTRODUCTIONElectrical steel sheets of silicon iron are of high industrial relevance, due to their almost universal use for soft magnetic cores of electric machines. Traditionally, the production of core steel is focussed at applications for grid frequencies f of 50 and 60 Hz, respectively. As a matter of fact, almost all literature on aspects of magnetic energy losses are concentrated on these values. On the other hand, in recent times, word-wide developments were started to implement electric drive systems in general ways. This involves a large range of frequency f, starting with 16 2/3 Hz, up to 400 Hz. In some detail, it includes the following frequency key values: 16 2/3 Hz for train drives 25 Hz for train drives in countries like North America 50 Hz world-wide, the most frequent general grid frequency 60 Hz the grid frequency in parts of America and Asia 80 Hz being relevant for f-controlled drives, among others 400 Hz for aircrafts, sub-marines etc. 500 Hz (or even higher) for currently developed drive systemsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Instantaneous Magnetization Powermentioning

confidence: 99%

Time‐averaged and instantaneous magnetic loss characteristics of different products of electrical steel for frequencies of 16 2/3 Hz up to 500 Hz

Shilyashki

Pfützner

Bengtsson³

et al. 2022

IET Electric Power Appl

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“…This, in fact simplifies the evaluation of (8) treating τ( f , µ) a constant. In [20], this constant µ is taken corresponding to the B max whereas, [21] suggests the µ at average value of excitation. However, the value of µ depends upon the magnetisation (as shown in Fig.…”

Section: A Eddy Current Loss(p Eddy )mentioning

confidence: 99%

Core Loss Estimation for an Inverter-Fed Induction Motor With More Accurate Realisation of Material Non-Linearity and Impact of Hysteresis Minor Loops

Kumar

2022

IEEE Trans. Energy Convers.

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The work presents a fast and accurate core loss evaluation method for inverter-fed induction machines. The proposed method takes into account the influence of time variation of magnetic permeability on the eddy current loss. Furthermore, the proposed method presents an accurate approach to precisely evaluate the hysteresis loss. The results obtained from the proposed method are compared with the existing methods for a 1.5kW inverter-driven induction motor. The method shows sufficiently high accuracy with reduced complexity and implementation-time for a wide range of inverter switching frequency and motor's loading.

show abstract

Section: A Eddy Current Loss(p Eddy )mentioning

confidence: 99%

Core Loss Estimation for an Inverter-fed Induction Motor With More Accurate Realisation of Material Non-linearity and Impact of Hysteresis Minor Loops

Kumar¹,

Prabhash²

2020

Preprint

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<p>The work presents a fast and accurate core loss evaluation method for inverter-fed induction machines. The proposed method takes into account the influence of time variation of magnetic permeability on the eddy current loss. Furthermore, the proposed method presents an accurate approach to precisely evaluate the hysteresis loss. The results obtained from the proposed method are compared with the existing methods for a 1.5kW inverter-driven induction motor. The method shows sufficiently high accuracy with reduced complexity and implementation-time for a wide range of inverter switching frequency and motor’s loading.</p>

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A modified analytical method for core losses calculation in magnetic laminations for a wide range of frequency and flux density

Cited by 13 publications

References 17 publications

Time‐averaged and instantaneous magnetic loss characteristics of different products of electrical steel for frequencies of 16 2/3 Hz up to 500 Hz

Time‐averaged and instantaneous magnetic loss characteristics of different products of electrical steel for frequencies of 16 2/3 Hz up to 500 Hz

Core Loss Estimation for an Inverter-Fed Induction Motor With More Accurate Realisation of Material Non-Linearity and Impact of Hysteresis Minor Loops

Core Loss Estimation for an Inverter-fed Induction Motor With More Accurate Realisation of Material Non-linearity and Impact of Hysteresis Minor Loops

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