Title:
SHIP PROPULSION SYSTEM
Document Type and Number:
WIPO Patent Application WO2003047962
Kind Code:
A3
Abstract:
The invention relates to a ship propulsion system that comprises at least one marine propeller (7), at least one electric motor (6) which drives the at least one marine propeller (7), and an inverter-fed power supply system which supplies the at least one electric motor (6) with electric power. Said power supply system comprises 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 (10) devoid of iron grooves as the power supply system. The bundle conductors of said winding are made from insulated thin copper wires that are disposed in an annular gap (11) between a rotor (8) and a laminated iron yoke (12) that is reinforced by a plastic structure (14) and/or embedded in or impregnated with resin and to which a pertaining cooling device (13) is connected by which the heat produced in the cooling device is dissipated.
Inventors:
RIES GUENTER (DE)
Application Number:
PCT/DE2002/004320
Publication Date:
September 18, 2003
Filing Date:
November 25, 2002
Export Citation:
Assignee:
SIEMENS AG (DE)
RIES GUENTER (DE)
RIES GUENTER (DE)
International Classes:
B63H23/24; B63J2/12; H02K3/24; H02K3/47; H02K9/08; H02K9/12; B60L50/30; H02K7/14; H02K55/04; (IPC1-7): B63H23/24; H02K7/14; H02K3/47; H02K55/02; H02K9/06; H02K9/19; H02K9/10; H02K9/18
Domestic Patent References:
| WO2001052393A1 | 2001-07-19 |
Foreign References:
| US5078628A | 1992-01-07 |
Other References:
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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