Energy management system of hybrid power ship based on wavelet-fuzzy logic and control method

An energy management system and fuzzy logic technology, which is applied to the energy management system and control field of a hybrid ship based on wavelet-fuzzy logic, and can solve the problems of high difficulty, high cost, and unsatisfactory control effect.

Active Publication Date: 2017-09-08
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The global optimization strategy cannot be used for real-time control, but it can be optimized. The global optimization strategy needs to know the basic information such as the channel and the navigation environment in advance during the control process, so it is difficult and computationally intensive.
The biggest feature of the instantaneous optimization strategy is the large amount of calculation and high cost. This control strategy can only optimize the instantaneous system efficiency
The logic gate limit control strategy has not been optimized, so the control effect is not ideal

Method used

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  • Energy management system of hybrid power ship based on wavelet-fuzzy logic and control method
  • Energy management system of hybrid power ship based on wavelet-fuzzy logic and control method
  • Energy management system of hybrid power ship based on wavelet-fuzzy logic and control method

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Embodiment Construction

[0071] In order to make the means, purpose and final effect of the present invention easy to understand, the following will give a detailed description of the embodiments of the present invention in conjunction with the drawings.

[0072] In the figure, 1-1 energy management system; 1-2 fuel cell: 1-3 battery; 1-4 supercapacitor; 1-5 unidirectional DC / DC converter; 1-6 bidirectional DC / DC converter; 1- 7 bidirectional DC / DC converter; 1-8 DC bus; 1-9 DC / AC inverter; 1-10 electric propulsion device; 2-1 monitor; 2-2 keyboard and mouse; 2-3 industrial computer; 2- 4 network switch; 2-5 CAN port expansion card; 2-6 digital I / O module; 2-7 analog I / O module; 2-8 button; 2-9 indicator light; 2-10 indicator light; 2- 11 fuel cell; 2-12 storage battery; 2-13 super capacitor; 2-14 propulsion motor; 2-15 PLC controller; 2-16 DC / DC converter; 2-17 DC / DC converter; 2-18 DC / DC converter

[0073] A hybrid ship power system architecture such as figure 1 As shown, the direction of the sol...

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Abstract

The invention relates to an energy management system of a hybrid power ship based on wavelet-fuzzy logic and a control method. The core of the energy management control method is a wavelet-fuzzy logic algorithm. A power demand is decomposed to power in bands of high, medium and low frequency by means of a wavelet transform method after parameters such as the current power demand of the ship, the state-of-charge of a storage battery and the state-of-charge of a supercapacitor by means of a sensor are acquired. The power of low frequency band is taken as initial output reference power of a fuel cell, the power of middle frequency band is taken as an initial reference power demand of the storage battery and the high frequency band of power is taken as an initial reference power demand of the supercapacitor. The system provided by the invention comprehensively coordinates power flows among different energy sources, that is, electric power demands of the ship shall be reasonably distributed according to dynamic characteristics of FC, the storage battery and the supercapacitor, so that the integral performance of the system is promoted and the economical benefit of fuel is improved.

Description

technical field [0001] The invention relates to a wavelet-fuzzy logic-based hybrid power ship energy management system and control method, specifically a method for rationally allocating fuel cells, storage batteries and superchargers through wavelet-fuzzy logic analysis based on the real-time power demand of the ship. A method for managing and controlling the power output by the three energy sources of the capacitor. Background technique [0002] Shipping is recognized as one of the most economical means of transportation in the world, and has played an important role in the development of the world economy. However, with the increase in world trade volume and energy demand, environmental problems have become increasingly prominent. As far as the current development status of clean energy technology is concerned, clean energy represented by wind energy, solar energy, nuclear energy and fuel cells has initially established a basis for application on ships, but only using a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H21/20G05B13/04
CPCB63H21/20G05B13/042Y02T90/40
Inventor 袁裕鹏张洁楠刘翰林陈丁宁
Owner WUHAN UNIV OF TECH
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