THEORY AND EXPERIMENT FOR IMPROVEMENT OF PRACTICAL SHIP PROPULSION SYSTEM BY ALTERNATING CURRENT MACHINE

Six kinds of feasible ship propulsion systems using alternating current machines are described in this paper. Conceptions, theories and the test results for continuous speed control of the following two kinds of propulsion systems are introduced. (1) Combination of electromagnetic coupling with synchronous motor of which the system is accelerated in economy of fuel oil for ship propulsion. (2) Combination of induction generator with synchronous motor of which the system is accelerated in free arrangement of propulsion prime mover. These methods can be considered superior to CPP methods in points of reliability, efficiency and cost. They can also be considered superior to other electric ship propulsion systems in reliability, efficiency and arrangement, synchronous motors don't need mechanical gearings generally. On the other hand, improvement of construction of electric machines as well as of systems in these two methods should be considered. Especially, it is important to make these electric machines brushless. Principles of these propulsion systems composed of brushless type electric machines and the results of the experiments confirming the right of the principles are explained in this paper. It could be well-ascertained from the above principles, theories and test results that these two methods are realizable.

• Corporate Authors:

  Marine Engineering Society in Japan

  Osaka Building, 1-2-2 Uchisaiwai-Cho, Chiyoda-Ku
  Tokyo 100,   Japan 
• Authors:
  • Shibata, F
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 19-35
• Serial:
  • Marine Engineering Society in Japan, Bulletin of
  • Volume: 5
  • Issue Number: 2
  • Publisher: Marine Engineering Society in Japan

Subject/Index Terms

• TRT Terms: Electric power; Electrical systems; Electromagnetic devices; Induction motors; Propulsion; Synchronous motors; Vehicle power plants
• Uncontrolled Terms: Propulsion systems
• Old TRIS Terms: Electromagnetic gear
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00163063
• Record Type: Publication
• Source Agency: Marine Engineering Society in Japan, Bulletin of
• Report/Paper Numbers: Quarterly
• Files: TRIS
• Created Date: Sep 28 1977 12:00AM