Propulsion system for ships
AssigneeInPower LLC
InventorsNormann Sandöy, Reidar Vaardal
Life of this patent
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Abstract
Propulsion system for ships and other mobile marine structures, with a driving machine for running an electrical generator, which is further connected to an electrical propulsion motor with connection to a propeller or similar propulsion device. The system can be simplified in that the generator and the propulsion motor are permanently magnetized synchronous machines. The two synchronous machines have substantially the same basic construction, with approximately identical voltage characteristics with regard to frequency, and they are directly connected together with a rigid electrical connection.
Claims18
A propulsion system for ships and other mobile marine structures, comprising:
- a driving machine having a mechanical rotating output;
- a generator comprising a permanently magnetized synchronous machine having a first number of poles;
- a propulsion motor comprising a permanently magnetized synchronous machine having a second number of poles;
- wherein the propulsion motor is configured so that it has essentially the same operating characteristics as the generator;
- a propulsion device;
- wherein the generator and the propulsion motor are directly connected by an electrical connection;
- wherein the generator is run by the driving machine;
- wherein the generator generates electricity of a frequency according to a rotational speed of the driving machine;
- and
- wherein rotation of the propulsion motor is synchronized with the generator;
- wherein the propulsion motor rotates at a speed according to the frequency of electricity supplied from the generator and causes the rotation of the propulsion device.
Dependencies are inferred from the claim text.