摘要
针对常规岸电电源不能向靠港船舶提供不间断式岸电,且不能接受船舶能量管理系统调度的问题,提出了一种基于虚拟同步发电机模型的岸电电源电力电子逆变器控制策略。通过模型中转动惯量J的引入,使得逆变器具有与柴油发电机相似的电气和机械特性;借鉴船舶电站调速器和励磁控制器基本原理,提出了能适应电力电子式岸电电源的数字功频控制器和励磁控制策略,使逆变器具有与柴油发电机相似的输出下垂特性。在Matlab/SIMULINK环境下搭建了该岸电电源的仿真模型,对其下垂特性和转动惯量对系统的影响进行了分析,最后通过低压小功率实验初步验证了该控制策略的可行性。
As traditional shore power can＇ t supply the docked ship with uninterruptable power and can＇t scheduled by the power management system on the ship,a novel control strategy was presented based on virtual synchronous generator.The equations of mechanical movement for the generator was introduced into the inverter control circuit,and the second-order electro-mechanical transient model of the generator was used by introduction of the rotational inertia J in the model.The power frequency controller module and the excitation controller module which can achieve the droop characteristic of system were introduced so that the inverter side of the shore power supply possessed the output droop characteristics similar to that of the diesel generator.The simulation model of the shore power supply was built in MATLAB/Simulink and the parallel operation with the diesel generator system was simulated,the influence of the rotational inertia in the model was analyzed.And the control strategy is verified.
出处
《电机与控制学报》
EI
CSCD
北大核心
2015年第2期45-52,共8页
Electric Machines and Control
基金
国家自然科学基金(50777030)
关键词
岸电电源
柴油发电机
虚拟同步发电机
下垂特性
并联运行
shore power supply
diesel generator
virtual synchronous generator
droop characteristics
parallel operation
