Ship propulsion system

Details Ship propulsion system Ship propulsion system

2006-02-07

2006-02-07

Sotelo, Jesus D. (Department: 3617)

Marine propulsion

Electric drive for propelling means

C440S051000

Reexamination Certificate

active

06994602

ABSTRACT:
A ship propulsion system includes at least one marine propeller, at least one electric motor which drives the at least one marine propeller, and an inverter-fed power supply system which supplies the at least one electric motor with electric power. The power supply system includes at least one drive machine and at least one generator driven thereby. The at least one electric motor and the at least one generator are configured as three-phase synchronous machines. In order to reduce losses per kW installed power and thus to allow for a stronger energizing field in the stator winding, the at least one electric motor configured as a three-phase synchronous machine and/or the at least one generator configured as a three-phase synchronous machine of the power supply system is/are provided with an air-gap three-phase winding devoid of iron grooves as the power supply system. The bundle conductors of the winding are made from insulated thin cooper wires that are disposed in an annular gap between a rotor and a laminated iron yoke, and the air gap three phase winding is reinforced by a plastic structure and/or embedded in or impregnated with resin and to which a pertaining cooling device is connected by which the heat produced in the cooling device is dissipated.

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Diamond Drill Radia: “WPI World Patent Information Derwent, Derwent, GB”, WPI World Patent Information Derwent, Derwent, GB, vol. 39, NR. 88, XP002042370.

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