船舶电力推进系统VC与DTC调速控制策略建模与仿真研究

Research on modeling & simulation analysis of marine electric propulsion system of VC/DTC speed control strategy

为研究不同永磁同步电机调速控制策略对船舶大功率推进电机调速性能的影响和在电力推进系统中的适用性,在推进电机及其螺旋桨负载数学模型的基础上,建立永磁同步电机矢量控制(VC)系统和直接转矩控制(DTC)系统。根据实船系统建立船舶电力推进系统并进行仿真,分析在船舶加速工况下2种控制策略的调速性能以及船舶电站的稳定性。仿真结果表明;2种控制策略都有很好的控制效果,在保证良好的调速性能同时,保持整个系统的稳定性,二者在船舶电力推进系统中都具有一定的适用性。

To study of different permanent magnet synchronous motor speed control strategy of power Marine propul- sion motor speed control performance and applicability in the electric propulsion system, on the basis of mathematical model of the propulsion motor and propeller load, established the permanent magnet synchronous motor vector control （VC） and direct torque control （DTC） system. Establishment of marine electric propulsion system and simulation based on the real ship, while analyzing two kinds of control strategy of speed control performance and stability of ship power station, under the working condition of ship speed.The simulation results show that the two kinds of control strategy has good control ef- fect, while ensuring good speed regulating performance at the same time, maintain the stability of the whole system, both in the ship electric propulsion system has certain applicability.