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Ship DC networking-based shore power access system and access method

A ship and networking technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of large space occupied by diesel generator sets, cold start damage of diesel engines, etc.

Pending Publication Date: 2017-07-07
SHANXI FENXI HEAVY IND +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The invention provides a shore power access system and an access method based on a ship's DC network, which solves the problem that when the ship is docked on the shore, the diesel generator set on the ship stops working, and the electrical equipment on the ship is directly switched to the shore. On the power supply, there are technical problems that the diesel generator set takes up a lot of space and the diesel engine is easily damaged by cold start

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  • Ship DC networking-based shore power access system and access method

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] A shore power access system based on a ship's DC network, including a first diesel generator set 1, a second diesel generator set 3, and a shore power supply 5. The first diesel generator set 1 communicates with a public DC The bus bar 9 is connected; the main propulsion motor inverter 10 is connected to the common DC bus bar 9, the main propulsion motor 11 is connected to the output end of the main propulsion motor inverter 10, and the main propulsion motor 11 is connected to the output shaft of the main propulsion motor 11. Propeller 12; On the public DC bus 9, a side propulsion motor inverter 13 is connected, the output end of the side propulsion motor inverter 13 is connected with a side propulsion motor 14, and on the output shaft of the side propulsion motor 14, a side propulsion motor is connected. The propeller 15; the common DC bus 9 is connected with t...

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Abstract

The invention discloses a ship DC networking-based shore power access system and access method, which is used for solving the problem that cold starting of diesel engine is easy to damage when a ship stops along the bank and a diesel power generation set on the ship stops working. A load inversion frequency converter (16) for ship daily and a load transformer (17) for ship daily are connected onto a public DC bus (9), a load (4) for ship daily is connected onto an output end of the load transformer (17) for ship daily, a second rectification frequency converter (8) is connected onto the public DC bus (9), an input end of the second rectification frequency converter (8) is connected with an output end of an on-off switch (7), an input end of the on-off switch (7) is connected with an output end of a second diesel power generation set (3), and the other input end of the on-off switch (7) is connected with a shore power supply transformer (6) and a shore AC power supply (5). By the shore power access system, a necessary condition is provided for hot starting of the ship diesel power generation set.

Description

technical field [0001] The invention relates to a ship DC network electric propulsion system, in particular to a shore power access system and an access method based on the ship DC network electric propulsion system. Background technique [0002] At present, the electric propulsion system of the ship has begun to adopt a DC network electric propulsion system, which is composed of a diesel generator set, a public DC bus, a frequency converter and a propulsion system. The diesel generator set is composed of a diesel engine and an asynchronous generator with an exciter. The alternating current generated by the asynchronous generator is rectified by a frequency converter to provide direct current for the common DC bus of the DC network. The common DC bus is connected in parallel with multiple inverters. Variable frequency converters, each inverter frequency converter is connected with its own propulsion motor, and each propulsion motor is connected with its own ship propeller. ...

Claims

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Application Information

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IPC IPC(8): H02J3/00B63J3/00
CPCH02J3/00B63J3/00B63J2003/002
Inventor 乌云翔岳凡徐清华王晓梅武治江王德应
Owner SHANXI FENXI HEAVY IND
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