Stability control method for electric propulsion ship in four sea condition environments

Abstract

The invention provides a stability control method for an electric propulsion ship in four sea condition environments. The stability control method comprises the following steps: constructing a ship motion overall model in four sea conditions; constructing a propulsion motor model; constructing a comprehensive model of the electric propulsion system under the four sea conditions based on the ship motion overall model and the propulsion motor model under the four sea conditions; and optimizing control parameters in the comprehensive model of the electric propulsion system under the four sea conditions through a particle swarm algorithm to obtain a final control scheme. Propulsion motor PI vector control parameters are optimized in real time mainly through an overall ship motion simulation model and a ship comprehensive electric propulsion system simulation model under four typical sea conditions by using a particle swarm algorithm.

Description

technical field [0001] The invention relates to the technical fields of ship control and marine engineering, in particular, to a method for controlling the stability of an electric propulsion ship under four sea conditions. Background technique [0002] With the development of intelligent, large-scale, and electrified ships, people's requirements for comfort continue to increase, and the development and utilization of green energy has a bright future. The development of electric propulsion ships has become the mainstream type of intelligent ships in the future. Under the disturbance of complex external marine environmental factors, parameters such as propeller working conditions and hull resistance of electric propulsion ships change irregularly, which affects the safety, stability and normal navigation of ships. Moreover, the design scheme of the electric propulsion ship must undergo a series of evaluations before it is officially put into use, and direct construction and r...

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Problems solved by technology

Moreover, the design of electric propulsion ships must undergo a series of evaluations before they are officially put into use, and direct construction and actual ship experiments will consume a lot of manpower and material resources, and there is a huge potential loss crisis

At present, some scholars have established wind, wave, current load models and ship motion models, which divide the sea conditions from 0 to 9 into four typical sea conditions for analysis, and simulate the wave disturbance dynamics under various sea conditions, but there is still a lack of a general The advanced control scheme enables the ship to adapt to various sea conditions and realize safe driving

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