Pub Date : 2022-01-01DOI: 10.3379/msjmag.2203rv001
Y. Hane
This paper introduces the latest research achievements on the hysteresis modeling for power magnetic devices based on the magnetic circuit method. First, the magnetic circuit model considering the magnetic hysteresis behavior is derived. Next, this magnetic circuit model is developed to the reluctance network model, to analyze more complicated devices such as an electric motor. Furthermore, this magnetic circuit model is improved to take the dynamic hysteresis characteristics including the skin effect into account. Finally, the prediction method of the deteriorated hysteresis loops in core material due to machining process is established.
{"title":"Hysteresis Modeling for Power Magnetic Devices Based on Magnetic Circuit Method","authors":"Y. Hane","doi":"10.3379/msjmag.2203rv001","DOIUrl":"https://doi.org/10.3379/msjmag.2203rv001","url":null,"abstract":"This paper introduces the latest research achievements on the hysteresis modeling for power magnetic devices based on the magnetic circuit method. First, the magnetic circuit model considering the magnetic hysteresis behavior is derived. Next, this magnetic circuit model is developed to the reluctance network model, to analyze more complicated devices such as an electric motor. Furthermore, this magnetic circuit model is improved to take the dynamic hysteresis characteristics including the skin effect into account. Finally, the prediction method of the deteriorated hysteresis loops in core material due to machining process is established.","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"145 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74030635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Sakaguchi, R. Oya, S. Wada, T. Matsumura, H. Saito, T. Ishibashi
Magneto -optical (MO) imaging using MO imaging plates is a magnetic imaging technique that enables real-time measurements and is expected to be used for non-destructive testing and for observing the magnetic domains of magnetic materials. In this study, we propose a quantitative measurement method for three dimensional (3D) magnetic field vector measurements. The x- and y-components of the magnetic fields within the measured plane are calculated from the measured z-component by using a signal transformation method based on magnetic field transfer functions. Furthermore, the magnetic field distributions at different heights are also obtained from a one-shot image. In this paper, 3D magnetic field vector measurements are demonstrated for ferrite magnets and an electrical steel sheet.
{"title":"3D Magnetic Field Vector Measurement by Magneto-Optical Imaging","authors":"H. Sakaguchi, R. Oya, S. Wada, T. Matsumura, H. Saito, T. Ishibashi","doi":"10.3379/msjmag.2203r002","DOIUrl":"https://doi.org/10.3379/msjmag.2203r002","url":null,"abstract":"Magneto -optical (MO) imaging using MO imaging plates is a magnetic imaging technique that enables real-time measurements and is expected to be used for non-destructive testing and for observing the magnetic domains of magnetic materials. In this study, we propose a quantitative measurement method for three dimensional (3D) magnetic field vector measurements. The x- and y-components of the magnetic fields within the measured plane are calculated from the measured z-component by using a signal transformation method based on magnetic field transfer functions. Furthermore, the magnetic field distributions at different heights are also obtained from a one-shot image. In this paper, 3D magnetic field vector measurements are demonstrated for ferrite magnets and an electrical steel sheet.","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77882891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Consideration of Efficiency and Power Factor of IPM-type Magnetic-Geared Motor","authors":"K. Ito, K. Nakamura","doi":"10.3379/msjmag.2201r004","DOIUrl":"https://doi.org/10.3379/msjmag.2201r004","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74028220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Kato, T. Kitamura, F. Maehara, H. Nakayama, K. Ikeda, A. Endo, H. Kato, T. Narita
{"title":"Design of Giant Magnetostrictive Actuator for Ultra-compact EV: Fundamental Consideration on Frequency Characteristics of Magnetostriction Force","authors":"T. Kato, T. Kitamura, F. Maehara, H. Nakayama, K. Ikeda, A. Endo, H. Kato, T. Narita","doi":"10.3379/msjmag.2205r004","DOIUrl":"https://doi.org/10.3379/msjmag.2205r004","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81430602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Takagi, M. Sakamoto, T. Ishihara, K. Okita, S. Yabukami, M. Yamaguchi, K. Chatani
{"title":"Analysis of Demagnetizing Effects on Microstrip Line Type Probe for the Permeability Measurement of Thick Specimen","authors":"K. Takagi, M. Sakamoto, T. Ishihara, K. Okita, S. Yabukami, M. Yamaguchi, K. Chatani","doi":"10.3379/msjmag.2211r002","DOIUrl":"https://doi.org/10.3379/msjmag.2211r002","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91199802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis and Analyses of Acicular Spinel Iron Oxide Particles with Core-Shell Structure Containing Manganese Ferrite and Magnetite","authors":"S. Yamada, M. Kishimoto, H. Yanagihara","doi":"10.3379/msjmag.2301r002","DOIUrl":"https://doi.org/10.3379/msjmag.2301r002","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"230 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78357075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fullerene C 60 shows astronomical four infrared bands (IR) of carbon rich planetary nebulae. However, there remain many unidentified bands. Our previous paper revealed that single void-defect induced graphene molecule reproduce many astronomical bands. In this paper, we investigated a series of multiple-void induced graphene molecules. We tried spin dependent DFT calculation. Model molecules are C 23 (one carbon pentagon ring among hexagon network), C 22 (two), and C 21 (three). Those were all magnetic molecules with spin state of Sz =2/2, 2/2 and 4/2 respectively. Calculated IR was compared with astronomical observation. The largest astronomical band at 18.9 micrometer was found in C 23 . Second largest band at 17.4 micrometer appeared both in C 22 and C 21 . Other major bands from 6 to 10 micrometer were reproduced well by a combination of C 23 , C 22 and C 21 . Similarly, larger size graphene molecules of C 53 , C 52 and C 51 were also magnetic and reproduced astronomical bands as well. Weighting sum IR of those molecules could successfully trace astronomical 12 bands from 6 to 20 micrometer. A series of multiple void induced graphene
{"title":"Magnetism and Astronomical Infrared Spectrum of Fullerene C60 and Void Induced Graphene Molecules","authors":"N. Ota, A. Li, L. Nemes, M. Otsuka","doi":"10.3379/msjmag.2111r002","DOIUrl":"https://doi.org/10.3379/msjmag.2111r002","url":null,"abstract":"Fullerene C 60 shows astronomical four infrared bands (IR) of carbon rich planetary nebulae. However, there remain many unidentified bands. Our previous paper revealed that single void-defect induced graphene molecule reproduce many astronomical bands. In this paper, we investigated a series of multiple-void induced graphene molecules. We tried spin dependent DFT calculation. Model molecules are C 23 (one carbon pentagon ring among hexagon network), C 22 (two), and C 21 (three). Those were all magnetic molecules with spin state of Sz =2/2, 2/2 and 4/2 respectively. Calculated IR was compared with astronomical observation. The largest astronomical band at 18.9 micrometer was found in C 23 . Second largest band at 17.4 micrometer appeared both in C 22 and C 21 . Other major bands from 6 to 10 micrometer were reproduced well by a combination of C 23 , C 22 and C 21 . Similarly, larger size graphene molecules of C 53 , C 52 and C 51 were also magnetic and reproduced astronomical bands as well. Weighting sum IR of those molecules could successfully trace astronomical 12 bands from 6 to 20 micrometer. A series of multiple void induced graphene","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"604 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77427353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To establish a practical method for analyzing interior permanent magnet (IPM) motors that have complicated flux distribution, this paper presents a method for deriving an analytical model for the IPM motor with polar anisotropic magnets, based on a reluctance network analysis (RNA). The proposed model can calculate the basic characteristics of the IPM motor with high accuracy and high speed by comparing the calculation results with the FEM and experiment.
{"title":"Reluctance Network Model of Interior Permanent Magnet Motor with Polar Anisotropic Magnet","authors":"Y. Hane, Y. Uchiyama, K. Nakamura","doi":"10.3379/msjmag.2109r002","DOIUrl":"https://doi.org/10.3379/msjmag.2109r002","url":null,"abstract":"To establish a practical method for analyzing interior permanent magnet (IPM) motors that have complicated flux distribution, this paper presents a method for deriving an analytical model for the IPM motor with polar anisotropic magnets, based on a reluctance network analysis (RNA). The proposed model can calculate the basic characteristics of the IPM motor with high accuracy and high speed by comparing the calculation results with the FEM and experiment.","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73333084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.3379/msjmag.2109rv001
S. Iwata, T. Kato, D. Oshima
{"title":"Crystal Structure and Magnetic and Magneto-optical Properties of CoPt, MnPt3, CrPt3, MnAl and MnGa Films with Ordered Phase and Their Bit-patterned Media","authors":"S. Iwata, T. Kato, D. Oshima","doi":"10.3379/msjmag.2109rv001","DOIUrl":"https://doi.org/10.3379/msjmag.2109rv001","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75091066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Koichiro Kobayashi, M. Iwai, Y. Ono, W. Sun, M. Sugimachi, K. Kusano, T. Shishido
{"title":"Magnetocardiography Current Source Estimation using Multiple Spatial Filters","authors":"Koichiro Kobayashi, M. Iwai, Y. Ono, W. Sun, M. Sugimachi, K. Kusano, T. Shishido","doi":"10.3379/msjmag.2109r003","DOIUrl":"https://doi.org/10.3379/msjmag.2109r003","url":null,"abstract":"","PeriodicalId":36791,"journal":{"name":"Journal of the Magnetics Society of Japan","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82912474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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