Comparison of Acoustic Noise and Vibration in Ball-Bearing-Supported Motors and One-Axis Actively Positioned Single-Drive Bearingless Motor With Two Radial Permanent-Magnet Passive Magnetic Bearings
This study experimentally investigates the acoustic noise, vibration, and power consumption in a one-degree-of-freedom actively positioned single-drive bearingless motor, which has radial passive magnetic bearings (RPMBs) and compared to an identical stator part and rotor shaft with radial mechanica...
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Published in: | Industry Applications, IEEE Open Journal of Vol. 4; pp. 35 - 48 |
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2023
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Abstract | This study experimentally investigates the acoustic noise, vibration, and power consumption in a one-degree-of-freedom actively positioned single-drive bearingless motor, which has radial passive magnetic bearings (RPMBs) and compared to an identical stator part and rotor shaft with radial mechanical ball bearings. For the experiment, three test motors were set up: (a) a bearingless motor with two RPMB, (b) a motor with two ball bearings without an axial preload, and (c) a motor with two ball bearings with an axial preload. Motor (a) under test had one-axis active positioning and the radial movements were supported by RPMB made of cylindrical permanent magnets. Conversely, in motors (b) and (c), the radial and axial movements were supported by ball bearings, and there was no production of active axial force. The experimental results confirmed that the levels of acoustic noise, stator vibration, and input power consumption were significantly lower in motor (a) than those in motors (b) and (c). In the analysis section, dynamic models of the bearingless motor with RPMB and motor with ball bearings were designed and simulated using MATLAB <inline-formula><tex-math notation="LaTeX">$\backslash$</tex-math></inline-formula> Simulink. The low radial stiffness in RPMB was found to contribute to acoustic noise and vibration reductions. Thus, this article presents an example of a one-degree-of-freedom actively positioned bearingless motor with RPMB that realizes reductions of acoustic noise, stator vibration, and input power consumption. |
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AbstractList | This study experimentally investigates the acoustic noise, vibration, and power consumption in a one-degree-of-freedom actively positioned single-drive bearingless motor, which has radial passive magnetic bearings (RPMBs) and compared to an identical stator part and rotor shaft with radial mechanical ball bearings. For the experiment, three test motors were set up: (a) a bearingless motor with two RPMB, (b) a motor with two ball bearings without an axial preload, and (c) a motor with two ball bearings with an axial preload. Motor (a) under test had one-axis active positioning and the radial movements were supported by RPMB made of cylindrical permanent magnets. Conversely, in motors (b) and (c), the radial and axial movements were supported by ball bearings, and there was no production of active axial force. The experimental results confirmed that the levels of acoustic noise, stator vibration, and input power consumption were significantly lower in motor (a) than those in motors (b) and (c). In the analysis section, dynamic models of the bearingless motor with RPMB and motor with ball bearings were designed and simulated using MATLAB <inline-formula><tex-math notation="LaTeX">$\backslash$</tex-math></inline-formula> Simulink. The low radial stiffness in RPMB was found to contribute to acoustic noise and vibration reductions. Thus, this article presents an example of a one-degree-of-freedom actively positioned bearingless motor with RPMB that realizes reductions of acoustic noise, stator vibration, and input power consumption. |
Author | Kiyota, Kyohei Gunda, Surya Narayana Chiba, Akira Sugimoto, Hiroya Srichiangsa, Theeraphong Asama, Junichi Fujii, Yusuke |
AuthorAffiliation | Department of Electrical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Chonburi, Thailand Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo, Japan Department of Mechanical Engineering, Shizuoka University, Shizuoka, Japan |
AuthorAffiliation_xml | – name: Department of Electrical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Chonburi, Thailand – name: Department of Mechanical Engineering, Shizuoka University, Shizuoka, Japan – name: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan – name: Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo, Japan |
Author_xml | – sequence: 1 givenname: Theeraphong surname: Srichiangsa fullname: Srichiangsa, Theeraphong organization: Department of Electrical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Chonburi, Thailand – sequence: 2 givenname: Surya Narayana surname: Gunda fullname: Gunda, Surya Narayana organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan – sequence: 3 givenname: Hiroya surname: Sugimoto fullname: Sugimoto, Hiroya organization: Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo, Japan – sequence: 4 givenname: Yusuke surname: Fujii fullname: Fujii, Yusuke organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan – sequence: 5 givenname: Kyohei surname: Kiyota fullname: Kiyota, Kyohei organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan – sequence: 6 givenname: Junichi surname: Asama fullname: Asama, Junichi organization: Department of Mechanical Engineering, Shizuoka University, Shizuoka, Japan – sequence: 7 givenname: Akira surname: Chiba fullname: Chiba, Akira organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan |
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Snippet | This study experimentally investigates the acoustic noise, vibration, and power consumption in a one-degree-of-freedom actively positioned single-drive... |
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SubjectTerms | Acoustic noise reduction Ball bearings bearingless motor Magnetic levitation Permanent magnet motors power consumption radial passive magnetic bearings (RPMB) Rotors Shafts Stators vibration reduction Vibrations |
Title | Comparison of Acoustic Noise and Vibration in Ball-Bearing-Supported Motors and One-Axis Actively Positioned Single-Drive Bearingless Motor With Two Radial Permanent-Magnet Passive Magnetic Bearings |
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