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Stable positioning of bearingless induction machine under temperature variation

Research Project

Project/Area Number 13650316
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionTokyo University of Science

Principal Investigator

CHIBA Akira  Tokyo University of Science, Dept. of Electrical Engineering, Associate Professor, 理工学部電気電子情報I, 助教授 (30207287)

Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2001: ¥2,300,000 (Direct Cost: ¥2,300,000)
Keywordsbearingless motor / bearingless / magnetic bearing / magnetic suspension / 電磁力支持
Research Abstract

In recent years, developments of bearingless drives are undergoing several parts of the world. The bearingless drives are the electric motors or generators with self-magnetic suspensions. Thus, there is increasing expectation of wide range of applications such as vacuum, low or high temperature conditions, harsh environments, long life and highly reliable machines. In fact, extensive developments can be seen in artificial heart blood pumps, canned pumps in chemical plants, semiconductor processes, bio reactors in bio engineering, telescope positioning in space satellites
The investigators have been done notable research in induction type bearingless motors. A control method to suspend a rotation shaft at rated load torque has been made obvious. However, there exist a possible problem of touch down of the shaft under temperature variations of a rotor resistance
In this research, magnetic suspension is found to be unstable is flux vectors have phase differences when rotor resistance reference value has discrepancy with respect to the actual rotor resistance. To avoid this problem, on-line estimation method of the rotor resistance is proposed. In the proposed method, a unique bearingless magnetic suspension feedback signal is used. In order to suspend a shaft weight, a static radial force is required, thus, radial force commands automatically generated in feedback loops to cancel the static force. Information of radial force command is employed to find the rotor resistance value. In addition, temperature drift in gap sensors are extensively compensated to realize practical system setup

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] 野本貴史, 千葉 明, 深尾正: "ベクトル制御誘導機形ベアリングレスモータにおける二次抵抗値の変化とその補償"日本機械学会第13回電磁力関連のダイナミクスシンポジウム講演論文集. 221-224 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 折田崇一, 野本貴史, 千葉 明, 深尾正: "二次抵抗値同定システムにおける変位センサの温度ドリフトの影響と補償"電子情報通信学会技術報告. 102-43. 13-18 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shuichi Orita, Takahsi Nomoto, Akira Chiba, Tadashi Fukao: "Influence and Compensation of Temperature Drift in a Gap Sensor on Rotor Resistance Identification"IEICE. Vol.102 No.43. 13-18 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tkahashi Nomoto, Akira Chiba, Tadashi Fukao: "The Variation and Compensation of the Rotor Resistance in Vector Controlled Bearingless Induction Motors"JSME Dynamics symposium. 221-224 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 野本貴史, 千葉明, 深尾正: "ベクトル制御誘導機形ベアリングレスモータにおける二次抵抗値の変化とその補償"日本機械学会第13回電磁力関連のダイナミクスシンポジウム. 221-224 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 折田崇一, 野本貴史, 千葉明, 深尾正: "二次抵抗同定システムにおける変位センサの温度ドリフトの影響と補償"電気学会半導体電力変換研究会 SPC-02-45. 7-12 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 野本貴史, 千葉明, 深尾正: "ベクトル制御誘導機形ベアリングレスモータにおける二次抵抗値の変化とその補償"日本機械学会 電磁力関連のダイナミクスシンポジウム. 221-224 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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