This paper describes the application of a 550 kW frequency changer used to convert the 60 Hz power produced by a ship's diesel generators into the variable frequency required to control the motors driving the thrusters. A new design of frequency changer that causes negligible additional heating in the motor at full power, allowing standard induction motors to be used in most cases, is explained. The fast response of electric controls to pilot commands, the impact on the ship's main engine control system, and the advantage of power limiting are discussed.

Media Info

  • Pagination: 5p.+discuss.

Subject/Index Terms

Filing Info

  • Accession Number: 00657967
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM