A simple predicting method for magnetic losses of electrical steel sheets under arbitrary induction waveform

Yanase, Shunji; Kimata, H.; Okazaki, Y.; Hashi, S.

doi:10.1109/tmag.2005.854863

Cited by 22 publications

(7 citation statements)

References 3 publications

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“…One probable cause of such differences is the under-estimation of iron losses due to the waveform for magnetic excitation [10]. Although iron loss measurements should be excited with sinusoidal voltages, this work established the loss models using square-formed voltages in accordance with the limits of the facilities.…”

Section: Comparison Of Unit Volumes and Lossesmentioning

confidence: 99%

Development of miniaturized AC reactors with lower-losses using amorphous wound cores in 400-kVA UPS

Kurita

Nakanoue

Onda

et al. 2014

2014 IEEE PES T&D Conference and Exposition

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We have designed and constructed lower-loss and smaller-unit volume three-phase amorphous reactors for use as filter components in a 400-kVA on-line UPS. For high-accuracy loss estimation, a simplified method has been applied that is based on measured B-H curves and iron losses of amorphous cores, modeled with magnetic simulations of a finite-element method (FEM) considering the directions of the amorphous ribbon planes. The reactors are formed from toroidal wound cores. Two core sizes designed with magnetic flux densities of standard (0.8 T) and higher (1.2 T) values are constructed. Their unit volumes are shrunk by 9 % and 43 %, respectively resulting in UPS efficiencies 0.54 % and 0.39 % higher than those of a conventional silicon-steel core reactor. The accuracy of the loss estimation method for PWM-induced reactors is verified. The method is confirmed to enable a miniaturized reactor for filtering in an inverter system to be designed on the basis of the trade-off with permissive raise of loss.

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Section: Comparison Of Unit Volumes and Lossesmentioning

confidence: 99%

Development of miniaturized AC reactors with lower-losses using amorphous wound cores in 400-kVA UPS

Kurita

Nakanoue

Onda

et al. 2014

2014 IEEE PES T&D Conference and Exposition

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show abstract

“…4 [11], thus contradicting its physical meaning. In this situation, the simplest two-component methods [3,4] may be preferable. It does not mean that the excess loss techniques should be discarded; they should be simply applied with care.…”

Section: Article In Pressmentioning

confidence: 99%

“…These techniques can be broadly subdivided into two-and three-component methods according to the way in which this data is used. In the two-component methods, the measured loss W is subdivided into hysteresis (static) and eddy current (dynamic) losses [2][3][4]. Three-component methods rely on the full loss separation which additionally supposes the subdivision of the dynamic loss, W dyn , into classical, W clas , and excess loss, W exc [5,6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of engineering methods of loss prediction in thin ferromagnetic laminations

Zirka

Moroz

Marketos

et al. 2008

Journal of Magnetism and Magnetic Materials

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“…To address these needs, this paper referred to the ASTM A927/A927M-04 and related references [ 5 – 9 ] by self-designing a detachable standardized toroidal test frame for measuring the iron loss of toroidal laminated silicon-steel sheets and for isolating the winding tolerances for precise characteristic comparison among similar but different samples. The accompanying power circuit can provide the signal for iron losses under sinusoidal waveform excitation for comparison with existing data.…”

Section: Introductionmentioning

confidence: 99%

Temperature Effects on the Magnetic Properties of Silicon-Steel Sheets Using Standardized Toroidal Frame

Lin

Chou

et al. 2014

The Scientific World Journal

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This study designed a detachable and standardized toroidal test frame to measure the electromagnetic characteristic of toroidal laminated silicon steel specimens. The purpose of the design was to provide the measurements with standardized and controlled environment. The device also can withstand high temperatures (25–300°C) for short time period to allow high temperature tests. The accompanying driving circuit facilitates testing for high frequency (50–5,000 Hz) and high magnetic flux (0.2–1.8 T) conditions and produces both sinusoidal and nonsinusoidal test waveforms. The thickness of the stacked laminated silicon-steel sheets must be 30~31 mm, with an internal diameter of 72 mm and an outer diameter of 90 mm. With the standardized setup, it is possible to carry out tests for toroidal specimen in high temperature and high flux operation. The test results show that there is a tendency of increased iron loss under high temperature operation. The test results with various driving waveforms also provide references to the required consideration in engineering designs.

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A simple predicting method for magnetic losses of electrical steel sheets under arbitrary induction waveform

Cited by 22 publications

References 3 publications

Development of miniaturized AC reactors with lower-losses using amorphous wound cores in 400-kVA UPS

Development of miniaturized AC reactors with lower-losses using amorphous wound cores in 400-kVA UPS

Comparison of engineering methods of loss prediction in thin ferromagnetic laminations

Temperature Effects on the Magnetic Properties of Silicon-Steel Sheets Using Standardized Toroidal Frame

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