The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
Nov. 25, 2002
Günter Ries, Erlangen, DE;
Günter Ries, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
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.