Research keywords (8):
high speed motor
, automotive traction
, bearingless motor
, magnetic suspension
, magnetic levitation
, generator
, Electric Machinery
, motor
Research theme for competitive and other funds (17):
2025 - 2028 Research on magnetically suspended bearingless motors with application of passive suspension system
2019 - 2022 Investigation of the limit of Earnshaw's theorem in bearigless motors.
2015 - 2017 Noise and vibration reduction of swithced reluctance motor for hybrid vehicles
2014 - 2017 Development of Magnetically Levitated Motor System Using One Three-phase Power Module
2013 - 2015 Development of switched reluctance generator
2009 - 2010 A three-dimensional bearingless motor for a disk-shaped centrifugal pump
2005 - コンシクエントポールPMベアリングレスドライブシステムの研究開発
1997 - 1998 超高速ベアリングレス誘導機の過渡時制御
1997 - 1998 Basic Study for Systematized Mechanism of Producing Radial Force and Rotational Torque of Bearingless Motors
1996 - 1996 超高速ドライブ用ベアリングレス誘導モータの負荷時安定化制御
1995 - 1996 Development of Shaftless Bearingless Axial Gap Motors.
1995 - 1996 Research of Homopolar Type Bearingless Motors and the Control Methods.
1995 - 1995 超高速ドライブ用ベアリングレス誘導モータの5軸浮上制御
1994 - 1994 超高速回転ベアリングレス誘導機の安定化
1993 - 1994 Trial Manufacturing of Mechanical Contactless Bearingless Motors with Five-axis Active Position Control
1993 - 1994 Research of the Control Method for a Bearingless Reluctance Motor
1989 - 1989 磁気軸受と一体化した超高速電動機
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Papers (235):
Fares S. El-Faouri, Shou Qiu, Yifei Cai, Chenyang Lyu, Kyohei Kiyota, Wejdan Abu Elhaija, Akira Chiba. Dual Flattening of Radial Force and Torque Waveforms in Switched Reluctance Motors. IEEE Open Journal of Industry Applications. 2026
Wenyi Xu, Kyohei Kiyota, Akira Chiba, Jun-Ichi Deguchi. Consideration of a Conductor Configuration of a High-speed SRM for Automobile Tractions to Reduce Its AC Copper Loss. 2025 IEEE International Electric Machines & Drives Conference (IEMDC). 2025. 487-492
Haruki Yamanaka, Yukio Tsutsui, Akira Chiba, Kyohei Kiyota, Yusuke Fujii, Mitsuru Endo. Torque Density Enhancement of Magnetic Worm-Geared Motor with Half Skew Structure by Introducing Curved Tooth Shape. 2025 IEEE International Electric Machines & Drives Conference (IEMDC). 2025. 383-388
Akira Chiba. A Review of Researches and Developments of Bearingless Motors. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2025
Guanghui Yang, Yiming Shen, Jiahao Chen 0002, You Zhou, Akira Chiba, Christopher H. T. Lee. Innovative Approaches for Improved Performance in Bearingless Slice Motors: Saturation Relieving and Rotor Angle Decoupled Suspension. IAS. 2025. 1-8
堀 直都, 千葉 明, 清田 恭平, 坂井 学, 木村 信哉, 春名 琉輝, 藤本 真希. キャンドモータポンプ用2極シンクロナスリラクタンスモータの回転子形状の検討-A rotor design consideration of the two-pole synchronous reluctance motor for a canned motor pump-モータドライブ/回転機合同研究会・回転機一般/モータドライブ一般. 電気学会研究会資料. RM / 電気学会回転機研究会 [編]. 2025. 2025. 132-141・143-153・155-159・161・162. 133-138
江原 武, 筒井 幸雄, 千葉 明, 清田 恭平, 遠藤 央, 國分 涼. 永久磁石を用いないSwirling Actuatorのトルク密度向上を目的とした電磁部の改良-Improvement of the Electromagnetic Structure for Torque Density Enhancement in a Swirling Actuator without Permanent Magnets-モータドライブ/回転機合同研究会・回転機一般/モータドライブ一般. 電気学会研究会資料. RM / 電気学会回転機研究会 [編]. 2025. 2025. 132-141・143-153・155-159・161・162. 69-74
山中 治紀, 筒井 幸雄, 千葉 明, 清田 恭平, 遠藤 央. 半スキュー構造を有する磁気ウォームギヤドモータにおける磁気飽和の低減を目的とした電機子巻線の軸方向分割-Axial Segmentation of Armature Windings to Suppress Magnetic Saturation of Magnetic Worm-Geared Motor with Half Skew Structure-モータドライブ/回転機合同研究会・回転機一般/モータドライブ一般. 電気学会研究会資料. RM / 電気学会回転機研究会 [編]. 2025. 2025. 132-141・143-153・155-159・161・162. 31-36
許 文懿, 清田 恭平, 千葉 明. 自動車駆動用高速小型SRMにおける鉄心形状変更による交流銅損の低減-Reduction of AC copper loss by Modifying the Iron Core Shape in High-Speed Compact SRMs for Automotive Tractions-モータドライブ/回転機合同研究会・回転機一般/モータドライブ一般. 電気学会研究会資料. RM / 電気学会回転機研究会 [編]. 2025. 2025. 132-141・143-153・155-159・161・162. 139-144
松田 昂樹, 清田 恭平, 千葉 明, 藤井 勇介, 筒井 幸雄. ロボット用無励磁作動型MR流体ブレーキにおける高トルク密度化の検討-Study on High Torque Density in Non-Excitation-Operation Type MR Brake for Robot Applications-リニアドライブ/交通・電気鉄道合同研究会・鉄道一般,リニアドライブ技術一般,磁気浮上技術,リニアドライブの応用,および磁気応用一般. 電気学会研究会資料. TER = The papers of Technical Meeting on "Transportation and Electric Railway", IEE Japan / 交通・電気鉄道研究会 [編]. 2025. 2025. 1-4・6-14・16. 15-20
Combination of oil film bearing and bearingless motor for high load capacity and stable rotation
(Proceedings of 2018 IEEE 27th International Symposium on Industrial Electronics (ISIE) 2018)
Radial excitation force generated by permanent magnet motor using d-axis current injection
(Abstract of International Conference on Industrial Technology 2018)
Suppression of Self-Excited Vibration Caused by Oil Film Bearing Using Bearingless Motor
(Proceeding of IEEE International Electric Machines & Drives Conference 2017)
Performance Improvement of a Bearingless Motor by Rotation about an Estimated Center of Inertia
(Abstruct of Linear Drives for Industry Applications 2017)
2010/04 - 現在 Tokyo Institute of Technology School of Engineering Professor
2004/04 - 2010/03 Tokyo University of Science Faculty of Science and Technology Professor
Committee career (2):
2020/04 - 現在 電気学会回転機技術委員会 委員長
2020/01 - 現在 Chair in IEEE Industry Applications Society Electric Machine Committee Chair
Awards (1):
2020/07 - IEEE Nikola Tesla Award (IEEE Techinical Field Award) For contribution of bearingless and reluctance motors
Association Membership(s) (5):
Japan Society of Automotives
, Power Electronics Society
, 日本機械学会
, Institute of Electrical Electronic Engineering
, Institute of Electrical Engineering of Japan