恶劣海况下的船舶电力推进系统控制策略仿真

针对恶劣海况下电力推进系统常规控制策略适应性不足的问题,提出抗过旋控制策略.首先,分析恶劣海况下螺旋桨出入水现象对螺旋桨产生的推力和转矩的影响,提出恶劣海况下带动态限速模块的抗过旋控制策略(抗过旋控制策略#1)和带吸气(ventilation)识别模块的抗过旋控制策略(抗过旋控制策略#2),并在后者中设计三种吸气效应识别器来侦测吸气效应;然后,在Matlab/Simulink环境中搭建船舶电力推进控制系统仿真模型;最后,设计恶劣海况下的仿真实验,比较常规控制策略与抗过旋控制策略之间的性能优劣.仿真实验结果表明,在恶劣海况下,带吸气识别模块的抗过旋控制策略拥有优良的控制性能.

Simulation of control strategy for marine electric propulsion system under rough sea conditions

Aiming at the problem of inadequate adaptability of conventional control strategy of electric propulsion system under rough sea conditions,an anti-spin thruster control strategy for marine electric propulsion system was proposed.Firstly,the influence of water entry and exit on thrust and torque of propeller under rough sea condition was analyzed,the anti-spin thruster control strategy with dynamic speed limiting module(anti-spin thruster control strategy#1)and anti-spin thruster control strategy with ventilation identification module(anti-spin thruster control strategy#2)were proposed,and three kinds of suction effect recognizers were designed in the latter to detect inspiratory effect.Secondly,the propulsion control simulation model was built in Matlab/Simulink environment.Finally,the simulation experiment under rough sea condition was designed to compare the performance between the conventional control strategy and the anti-spin thruster control strategy.The simulation results show that the anti-spin thruster control strategy with suction identification module has excellent control performance under the rough sea conditions.