Electric propulsion system for ships

A technology for electric propulsion and ships, which is applied in the direction of ship propulsion, propulsion components, propulsion transmission devices, etc., to achieve the effect of avoiding bad combustion and omitting large volume

Inactive Publication Date: 2010-10-13
DAIICHI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the case of an electric propulsion type marine propulsion device, the layout of the main engine and propeller is free, and it is not necessary to arrange the shafting device in a straight line like the aforementioned direct drive type marine propulsion device

Method used

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  • Electric propulsion system for ships
  • Electric propulsion system for ships
  • Electric propulsion system for ships

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Embodiment Construction

[0099] Embodiments of the present invention will be described below using the drawings.

[0100] figure 1 A block diagram showing an electric propulsion system for a ship according to an embodiment of the present invention.

[0101] Such as figure 1 As shown, the marine electric propulsion system 1 of this embodiment includes a variable speed engine 2 , a synchronous generator 3 , a pole changing device 4 , a synchronous motor 5 or an induction motor 6 , and a fixed-pitch propeller 7 .

[0102] figure 1 (a) has a variable-speed engine 2, a synchronous generator 3, a pole changing device 4, a synchronous motor 5, and a fixed-pitch thruster 7, figure 1 (b) is the structure which has the variable-speed engine 2, the synchronous generator 3, the pole changer 4, the induction motor 6, and the fixed-pitch thruster 7.

[0103] The variable speed engine 2 is designed to be able to generate an output with a moderate combustion state within a constant width rotation range.

[0...

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Abstract

There is provided an electric propulsion system for a ship in which the cargo capacity of the ship is enhanced while the ship speed of the dead slow or less can be controlled. The electric propulsion system includes a variable speed engine (2), a synchronous generator (3) that generates electricity by the variable speed engine, an induction motor (6) that is connected to the synchronous generator, and a fixed-pitch propeller (7) that is driven by the induction motor.

Description

technical field [0001] The invention relates to electric propulsion systems for ships. [0002] In particular, the present invention relates to an electric propulsion system for a ship that saves space extremely by combining a variable speed engine, a synchronous generator, and a synchronous or induction motor speed control. Background technique [0003] As an engine for a ship, a diesel engine is most commonly used, and a direct drive type ship propulsion device in which an engine and a propeller are directly connected has been used in the past. [0004] Vessels must be able to control their speed while sailing. Conventionally, as a method of controlling the speed of a ship, a variable-speed engine in which the rotation speed of the engine itself is variable or a variable-pitch thruster in which the pitch can be changed because the installation angle of the propeller can be changed arbitrarily has been used. [0005] In addition, conventionally, when a ship retreats, a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H21/17B63H23/24
CPCB63H5/125B63H23/24B63H21/17B63H2005/1258
Inventor 伊藤雅则佐藤宽
Owner DAIICHI ELECTRIC
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