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A single-shaft dual-motor marine ammonia-electric hybrid power system based on electric compound supercharging

A technology of hybrid power system and dual motors, which is applied in the field of marine power systems, can solve the problems of low power generation efficiency of power grid diesel generator sets at constant speed, restriction of battery life, insufficient torque loading, etc. The effect of wide coverage and meeting power requirements

Active Publication Date: 2022-04-29
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limitation of battery capacity leads to high manufacturing cost, long charging time, short battery life, and low redundancy. It is still difficult to meet the actual needs at present.
Moreover, due to the influence of power generation methods, power density and energy storage technology, pure electric ships at this stage cannot achieve high-performance speed, acceleration and self-control, and their battery life is also restricted by their battery capacity. Provide continuous energy output, but the traditional power grid diesel generator sets have low power generation efficiency at a constant speed, and they are in low-load conditions for a long time, resulting in serious waste of fuel
[0004] The reduction of petroleum resources makes it difficult to meet the needs of traditional diesel engine propulsion. On the other hand, diesel engine propulsion has the disadvantages of high emissions and high pollution. Although measures such as installing after-treatment devices and optimizing fuel injection can improve emissions, it will be difficult to meet more stringent requirements in the future. Although the pure natural gas engine or dual-fuel engine propulsion can greatly reduce the emission of sulfur and nitrogen compounds, it is still difficult to solve the problem of CO 2 Emission problems, and the natural gas engine has disadvantages such as poor low-working condition characteristics, insufficient torque loading, etc., and there are obvious deficiencies in power performance

Method used

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  • A single-shaft dual-motor marine ammonia-electric hybrid power system based on electric compound supercharging
  • A single-shaft dual-motor marine ammonia-electric hybrid power system based on electric compound supercharging
  • A single-shaft dual-motor marine ammonia-electric hybrid power system based on electric compound supercharging

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Embodiment Construction

[0031] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0032] combine Figure 1-3 , see figure 1 , a single-shaft dual-motor marine ammonia-electric hybrid power system, including a supercapacitor 1, a battery 2, diesel generator sets 3a, 3b, 3c, power conversion devices 4a, 4b, 4c, transformers 5a, 5b, 5c, and a frequency conversion device 6a, 6b, 6c, first reversible motor 7, liquid ammonia tank 8, stop valve 9, pressure stabilizing valve, vaporization heat exchange device 10, turbocharger 11, ammonia fuel engine 12, clutch 13, second reversible motor 14, Clutch 15, gear box 16, third reversible motor 17a, fourth reversible motor 17b, fixed-pitch propellers 18a, 18b, variable-pitch propeller 19, ship daily load 20, ship cooling system 21.

[0033] Its connection relationship is: the first reversible motor 7 is connected with the ammonia fuel engine 12 and its turbocharger 11 through the belt crankshaft; the ammoni...

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Abstract

The object of the present invention is to provide a single-shaft dual-motor marine ammonia-electric hybrid power system based on electric compound supercharging, including ammonia fuel engine, turbocharger, reversible motor, diesel generator set, battery, capacitor, propeller, liquid ammonia Storage supply device, power transformation device, ship power grid, ship load and whole ship cooling system. The diesel generator set, storage battery and super capacitor are connected to the ship power grid through the frequency conversion device; the ship power grid is connected to the ship load and each reversible motor through the power conversion device; the first reversible motor is connected to the supercharger turbine and the engine through the belt crankshaft; the ammonia fuel engine is The clutch is connected with the second reversible motor and drives the variable-pitch propeller after passing through the gearbox; the third and fourth reversible motors directly drive the fixed-pitch propeller; the cooling system of the whole ship can realize multi-stage cold energy utilization. The invention can realize the hybrid propulsion of the ammonia fuel engine and the motor and realize the multi-stage utilization of the energy storage unit and the cold energy of the engine.

Description

technical field [0001] The invention relates to a ship power system, in particular to a ship hybrid power system. Background technique [0002] With the emission regulations formulated by the International Maritime Organization and the energy efficiency design index becoming more stringent, it is imminent to solve the problems of high energy consumption and high pollution of ships. Under the background of advocating green, efficient and sustainable development, the country is actively promoting the greening of ships in the field of ships. Construction and the realization of energy diversification have put forward new requirements for the development of ships. [0003] Electric propulsion, as the development trend of ship power in the future, has the advantages of high efficiency, cleanliness and reliability. However, the limitation of battery capacity leads to high manufacturing cost, long charging time, short battery life, and low redundancy, which are still difficult to m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H21/20B63H21/38B60L58/26B60L58/27B60L50/10B60L50/40H01M10/613H01M10/615H01M10/62H01M10/6567H01M10/659
CPCB63H21/20B63H21/383B63H21/386B60L58/26B60L58/27B60L50/10B60L50/40H01M10/613H01M10/615H01M10/62H01M10/6567H01M10/659B63H2021/205B60L2200/32Y02T10/70Y02T10/7072Y02E60/10
Inventor 范立云张恒熙徐超鲁仲阳鲁宏伟毛运涛
Owner HARBIN ENG UNIV
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