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Marine extended-range fuel cell hybrid electric propulsion system and control strategy thereof

A fuel cell and hybrid power technology, which is used in ship propulsion, engines and propulsion components combined with propulsion devices, etc., can solve the problems of fuel cell performance degradation, shortened life, and large fluctuations in output power, reducing weight and extending Service life, the effect of meeting power requirements

Inactive Publication Date: 2019-07-12
JIMEI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Lithium batteries can quickly respond to changes in load demand and power, while fuel cells are prone to current upshoots and voltage downregulations when the load changes due to difficulties in water and heat management and difficulty in matching fuel supply and stack conditions. , the output power fluctuates greatly, and at the same time, it is easy to attenuate the performance of the fuel cell and shorten the life; 2. The voltage platform is relatively stable, and the voltage change is small as the SOC decreases

Method used

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  • Marine extended-range fuel cell hybrid electric propulsion system and control strategy thereof
  • Marine extended-range fuel cell hybrid electric propulsion system and control strategy thereof
  • Marine extended-range fuel cell hybrid electric propulsion system and control strategy thereof

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Embodiment Construction

[0047] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0048] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0049] Such as figure 1 , which shows a marine extended-range fuel cell hybrid electric propulsion system, which uses a lithium battery pack as the main power source and a fuel cell engine as an auxiliary power source,...

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Abstract

The invention discloses a marine extended-range fuel cell hybrid electric propulsion system and a control strategy thereof. The marine extended-range fuel cell hybrid electric propulsion system is suitable for small-and-medium-sized ships in inland rivers and lakes, and is the hybrid electric propulsion system that uses a lithium battery as a main power source of the electric propulsion system andallows the lithium battery and a fuel cell engine to be grid-connected to be used as a range extender through a diode and a controllable switch. On the one hand, in the navigation process of a ship,when the nuclear charge state of the lithium battery is low, the fuel cell engine is started to charge the lithium battery, and the cruising ability of an electric propulsion ship is improved; and onthe other hand, the fuel cell engine and the lithium battery are grid-connected when the power output is large, the advantages of the lithium battery are fully exerted, the application defects of a fuel cell are overcome, multiple working modes are applied to be switched to each other, the sailing working conditions of the ship are met, and the effects of energy conservation and emission reductionare achieved.

Description

technical field [0001] The invention relates to the field of application of clean and renewable energy in ship electric propulsion, in particular to a marine extended-range fuel cell hybrid electric propulsion system and a control strategy. Background technique [0002] The world's major shipping powers attach great importance to the development of green ships and their environmentally friendly new energy propulsion systems. The application of hydrogen energy, which is the ultimate energy source for human beings, in ships has received special attention, and has recognized the hybrid electric propulsion method using hydrogen fuel cells as energy storage units. . However, compared with other power batteries, the current power output characteristics of hydrogen fuel cells are soft, and there are problems of hydrogen fuel storage difficulties and high prices. [0003] Summarizing the research literature on the application of fuel cells to ship electric propulsion systems, it ca...

Claims

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Application Information

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IPC IPC(8): B63H21/20
CPCB63H21/20B63H2021/202Y02T90/40
Inventor 郑青榕
Owner JIMEI UNIV
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