Detection of Near-propeller Bubbles and Thrust Power in a Constant Torque Control Motor Propulsion System

• Ode Tsuyoshi

  Tokyo University of Marine Science and Technology

• Takamasa Tomoji

  Tokyo University of Marine Science and Technology

• Shimizu Etsuro

  Tokyo University of Marine Science and Technology

• Hazuku Tatsuya

  Tokyo University of Marine Science and Technology

• Kifune Hiroyasu

  Tokyo University of Marine Science and Technology

• Ihara Tomonori

  Tokyo University of Marine Science and Technology

抄録

The AC motor drive system is widely used in electric propulsion systems. This motor drive system has a far faster response time (by up to several milliseconds) than a conventional system. It is also possible to monitor the state (current, voltage, torque, rotational speed) of the motor accurately in real time. If bubbling in the vicinity of the propeller is detected by monitoring the motor state, an additional special device such as a torque meter can be omitted from the propulsion system. Furthermore, a faster response time allows advanced propeller control, enabling the suppression of bubble formation and the resulting effects in real time. This paper demonstrates the detection of bubbles and fluctuating thrust due to bubble entrainment by monitoring signals from the motor, as it is driven in constant torque control mode. A fluctuating thrust force can be detected and well correlated with any bubble interactions using the monitoring signal.

収録刊行物

• マリンエンジニアリング

  マリンエンジニアリング 53 (3), 362-367, 2018-05-01

  公益社団法人 日本マリンエンジニアリング学会

詳細情報

• CRID: 1390001204571907968
• NII論文ID: 130006742894
• NII書誌ID: AA11505252
• DOI: 10.5988/jime.53.362
• ISSN: 18843778
• ISSN: 13461427
• NDL書誌ID: 029040253
• Web Site: http://id.ndl.go.jp/bib/029040253
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029040253
• Web Site: https://www.jstage.jst.go.jp/article/jime/53/3/53_362/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
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