Application of MQ Ring Magnets to AC-Servomotors
Significant progresses have been made in improving various properties of NEOQUENCH (MQ) series magnets by reflecting ever more stringent market requirements to production technologies. In this paper the most powerful radially anisotropic magnets, NEOQUENCH-DR series, are highlighted and their applic...
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Published in | DENKI-SEIKO Vol. 63; no. 3; pp. 226 - 234 |
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Main Authors | , , |
Format | Journal Article |
Language | English Japanese |
Published |
Daido Steel Co., Ltd
1992
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Online Access | Get full text |
ISSN | 0011-8389 1883-4558 1883-4558 |
DOI | 10.4262/denkiseiko.63.226 |
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Abstract | Significant progresses have been made in improving various properties of NEOQUENCH (MQ) series magnets by reflecting ever more stringent market requirements to production technologies. In this paper the most powerful radially anisotropic magnets, NEOQUENCH-DR series, are highlighted and their applications to AC-servomotors are presented. Merits of replacing several arc segment/bread-loaf magnets, which are used in conventional AC-servomotors, by one-piece ring magnet, NEOQUENCH-DR, are; 1. Economic (1) lower assembly cost (2) reduced cost-up in changing number of poles & back-EMF pattern 2. Technical (1) perfectly sinusoidal back-EMF pattern possible (2) smaller cogging torque (3) stronger stick to a rotor hub |
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AbstractList | Significant progresses have been made in improving various properties of NEOQUENCH (MQ) series magnets by reflecting ever more stringent market requirements to production technologies. In this paper the most powerful radially anisotropic magnets, NEOQUENCH-DR series, are highlighted and their applications to AC-servomotors are presented. Merits of replacing several arc segment/bread-loaf magnets, which are used in conventional AC-servomotors, by one-piece ring magnet, NEOQUENCH-DR, are; 1. Economic (1) lower assembly cost (2) reduced cost-up in changing number of poles & back-EMF pattern 2. Technical (1) perfectly sinusoidal back-EMF pattern possible (2) smaller cogging torque (3) stronger stick to a rotor hub |
Author | Kasai, Yasuaki Yoshikawa, Norio Yamada, Hiyoshi |
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References | 3) Y. Kasai, T. Watanabe, S. Shibata, V. Panchanathan and J.J. Croat: Gorham Advanced Materials Conference, Seattle, WA., June 4-5, 1990 6) Y. Yoshida, Y. Kasai, T. Watanabe, S. Shibata, V. Panchanathan and J.J. Croat: J. Appl. Phys., 69 (1991), 5841 7) 清水元治,平井伸之:日立金属技報, 6 (1990), 33 1) J.J. Croat, J.F. Herbst, R.W. Lee and F.E. Pinkerton: J. Appl. Phys., 55 (1984), 2078 4) Y. Kasai: Gorham Advanced Materials Conference Orlando, FL., Feb. 16-18, 1992 2) M. Sagawa, S. Fujimura, M. Togawa, H. Yamamoto and Y. Matsuura: J. Appl. Phys., 55 (1984), 2084 5) N. Yoshikawa, Y. Kasai, T. watanabe, S. Shibata, V. Panchanathan and J.J. Croat: J. Appl. Phys., 69 (1991), 6049 |
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Title | Application of MQ Ring Magnets to AC-Servomotors |
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