Measurement of Local Vector Magnetic Properties in Laser Scratched Grain-Oriented Silicon Steel Sheet With a Vector-Hysteresis Sensor

Aihara, Shigeru; Shimoji, Hiroyasu; Todaka, Takashi; Enokizono, Masato

doi:10.1109/tmag.2012.2202272

Cited by 10 publications

(2 citation statements)

References 8 publications

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“…8. Even though the reduction could be considered small given the increased manufacture complexity, a reduction is observed and is considered to be due to the superior characteristics of GO steel 17) and the laser scratch that downsizes the magnetic domains and then reduce the excess loss 18) .…”

Section: Measurement Results Of Drag Force Testmentioning

confidence: 99%

Anisotropic Magnetic Core for the Iron Loss Reduction of Permanent Magnet Synchronous Motor

et al. 2018

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An interior permanent magnet synchronous motor (IPMSM) using a stator core made of grain-oriented (GO) anisotropic magnetic material is manufactured to evaluate the potential iron loss reduction that GO can bring compared to the conventionally used non-oriented (NO) quasi-isotropic silicon steel. The stator core is divided into yoke and teeth pieces that are arranged so that the GO material easy magnetization direction follows the main magnetic flux that flows in the core during the motor operation. The motor iron loss is measured under two conditions: 1) the IPMSM is rotated by an external motor ("drag force operation"), 2) the IPMSM is driven by a pulse-width modulation (PWM) inverter without load ("no-load operation"). The manufactured motor shows 13.5 % iron loss reduction during drag force operation and 5 % reduction during no-load operation. Numerical calculation is also carried out by 2-D finite element analysis (FEA) to confirm the experimental data.

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Section: Measurement Results Of Drag Force Testmentioning

confidence: 99%

Anisotropic Magnetic Core for the Iron Loss Reduction of Permanent Magnet Synchronous Motor

et al. 2018

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“…As for magnetic flux density, B-needle method and induction coil method are the most common detection techniques. The first method has been applied to nanocrystalline alloy [2,8], but some scholars pointed out that needles would fall in the material with small grains [17]. The second method is often adopted by electrical steel, and also recommended by the standard for amorphous alloy [4], so this method would be used in this paper.…”

Section: Introductionmentioning

confidence: 99%

Magnetic measurement of nanocrystalline alloy based on a single sheet tester

Zhang

et al. 2020

IET Science Measure & Tech

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Generally, for the measurement of magnetic characteristics of nanocrystalline alloy, the magnetic circuit length (lm) is assumed as a constant, and magnetic measurement under square waveform is rarely focused. This paper examines that magnetic characteristics of nanocrystalline alloy are measured under sinusoidal waveforms and square waveforms based on a single sheet tester. The factors related to lm are analysed from the tested data under sinusoidal excitations, and a novel method to determine lm is presented, which is then extended to the case under square waveforms. By combining with a power electronic inverter, the influence of power electronic topology on measurements is analysed, and the oscillation mechanism of excitation current of single sheet tester is revealed. As a result, the limitation of the H‐coil method for acquiring the magnetic field intensity H under square waveforms is pointed out, and improved magnetic circuit method is introduced. It is shown from experimental results that the proposed measurement system is useful for acquiring magnetisation characteristics of the nanocrystalline alloy.

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Evaluation of local magnetic degradation by interlocking electrical steel sheets for an effective modelling of electrical machines

Imamori

Aihara²,

Shimoji

et al. 2020

Journal of Magnetism and Magnetic Materials

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Measurement of Local Vector Magnetic Properties in Laser Scratched Grain-Oriented Silicon Steel Sheet With a Vector-Hysteresis Sensor

Cited by 10 publications

References 8 publications

Anisotropic Magnetic Core for the Iron Loss Reduction of Permanent Magnet Synchronous Motor

Anisotropic Magnetic Core for the Iron Loss Reduction of Permanent Magnet Synchronous Motor

Magnetic measurement of nanocrystalline alloy based on a single sheet tester

Evaluation of local magnetic degradation by interlocking electrical steel sheets for an effective modelling of electrical machines

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