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Electric ship Hybrid main power supply system and control method

A main power supply, electric boat technology, applied in electric vehicles, emergency power supply arrangements, battery circuit devices, etc., can solve the problems of low power density, inability to meet the maximum power at the moment of load, flicker and so on

Pending Publication Date: 2019-01-15
江苏中智海洋工程装备有限公司
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AI Technical Summary

Problems solved by technology

Solve the technical problems that the electric boats in the prior art use electrochemical batteries, which have low power density and cannot meet the demand for maximum power at the moment of load, causing grid voltage fluctuations and flickering, causing electrical equipment to fail to work normally, and possibly causing the grid to collapse

Method used

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  • Electric ship Hybrid main power supply system and control method
  • Electric ship Hybrid main power supply system and control method
  • Electric ship Hybrid main power supply system and control method

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] Among the ship's electrical loads, loads such as engine room machinery, deck machinery, and household appliances are basically powered by AC power; lighting systems can be powered by AC or DC power; communication, navigation, and alarm loads should be powered by AC and DC Mains powered; only the main propulsion system varies from boat to boat. Therefore, it is necessary to design different hybrid main power system structural schemes to meet the different electric propulsion power supply requirements of electric ships. The following hybrid main power system structural schemes have been invented. The electric boat hybrid main power system of the present invention is composed of a supercapacitor bank 4 and a main lithium ion battery pack 2 to form a hybrid main power supply, and a DC / DC interface converter 6 and a supercapacitor bank 4 are ...

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Abstract

An electric ship Hybrid main power supply system and a control method are disclosed, the main power supply is composed of a supercapacitor bank and a main lithium ion battery pack, DC / DC interface convert and supercapacitor bank are combined into an integrated energy storage device, and that hybrid main pow supply system of an electric ship is divided into three structures, namely, a DC bus DC electric propulsion main power supply system, a DC bus AC electric propulsion main pow supply system, and an AC bus AC electric propulsion main power supply system. The hybrid main power supply system comprises a DC bus DC electric propulsion main power supply system, a DC bus AC electric propulsion main power supply system and a DC bus AC electric propulsion main power supply system. A supercapacitor and a lithium ion battery with that characteristic of high power density, short char time, large instantaneous output power, absorbable regenerative energy and the like are adopted to compose a mixed main power supply, and the advantages of the supercapacitor and the lithium ion battery are complemented by utilizing respective characteristics, thereby lightening the burden of the lithium ion battery, prolonging the service life of the supercapacitor and playing the role of stabilizing the ship power network.

Description

technical field [0001] The invention relates to a hybrid main power supply system and a control method of an electric ship, belonging to the technical field of ship power supply devices. Background technique [0002] Ships whose main power supply is composed of batteries, usually called electric boats, are currently considered as one of the measures for ships to achieve energy conservation and environmental protection. In CCS "Code for Construction of Steel Inland Waterway Ships" (2016 Edition, Chapter 3, Section 1, Part 3), it is stipulated that the main power supply device can use battery packs, but there is no further requirement for the structure of the system. At present, the design of the main power supply of electric boats is still in the exploratory stage. Ships are affected by various factors during navigation, and the electric main propulsion load will have instantaneous peak power. Electrochemical batteries have the characteristics of high energy density, long d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/00H01M10/42H01M10/48
CPCH02J7/0026H01M10/42H01M10/482H02J7/0036H02J9/061H02J7/00304H02J2207/20H02J9/068Y02E60/10
Inventor 丁笑寒温莉张发平陈智同高波周洋
Owner 江苏中智海洋工程装备有限公司
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