船舶永磁轴带发电系统运行模式平滑切换研究

Research on smooth switching of operation modes of ship’s permanent magnet shaft power generation system

为实现船舶永磁轴带发电系统在独立与并网运行模式之间的平滑切换,文章引入下垂控制策略,提出基于改进式下垂控制策略的平滑切换技术。在Matlab/Simulink中分别对永磁轴带发电系统并网运行、并网切独立运行、独立切并网运行3种工况进行仿真,并对仿真结果进行分析。试验结果表明:采用基于改进式下垂控制策略的平滑切换技术,能够实现永磁轴带发电系统运行模式切换时电压电流的平滑切换。

The paper introduces a droop control strategy and proposes a smooth switching technology based on the improved droop control strategy,to realize the smooth switching of the ship’s permanent magnet shaft power generation system between the independent and grid-connected operation modes.In addition,three working conditions of the permanent magnet shaft power generation system are simulated respectively in Matlab/Simulink,including grid-connected operation,grid-connected to independent operation,and independent to grid-connected operation,and the simulation results are analyzed.The test results show that the smooth switching technology based on the improved droop control strategy can realize the smooth switching of voltage and current as the permanent magnet shaft power generation system changes its operation mode.