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
Main Authors: Srichiangsa, Theeraphong, Gunda, Surya Narayana, Sugimoto, Hiroya, Fujii, Yusuke, Kiyota, Kyohei, Asama, Junichi, Chiba, Akira
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Language:English
Published: IEEE 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.
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
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  givenname: Theeraphong
  surname: Srichiangsa
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  organization: Department of Electrical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Chonburi, Thailand
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  givenname: Surya Narayana
  surname: Gunda
  fullname: Gunda, Surya Narayana
  organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan
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  givenname: Hiroya
  surname: Sugimoto
  fullname: Sugimoto, Hiroya
  organization: Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo, Japan
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  givenname: Yusuke
  surname: Fujii
  fullname: Fujii, Yusuke
  organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan
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  givenname: Kyohei
  surname: Kiyota
  fullname: Kiyota, Kyohei
  organization: Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan
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  givenname: Junichi
  surname: Asama
  fullname: Asama, Junichi
  organization: Department of Mechanical Engineering, Shizuoka University, Shizuoka, Japan
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  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...
SourceID ieee
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StartPage 35
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
URI https://ieeexplore.ieee.org/document/9999318
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