针对舰船电力推进系统的螺旋桨特性,采用矢量控制方法对舰船推进电机进行调节,给出异步电机矢量控制框图,在空间矢量脉宽调制环节引入等效调制函数以简化控制环节并提高控制效率,分析并给定舰船推进电机的螺旋桨特性曲线.利用PSCAD/EMTDC对实际系统进行仿真,计算了不同工况下电机起动和调速时系统的暂态稳定状况,并结合试验进行验证,结果表明两者变化规律相吻合,证明仿真模型的正确性和所选方法的可行性.%According to the load characteristic of vessel electric propulsion system, the vector control method is introduced to the speeding of the propulsive motor.The control block is given, the equivalent modulation function for space vector pulse width modulation is adopted to simplify the control,the characteristic curve of propeller is analyzed, and the simulative model of the electric propulsion system is built in PSCAD/EMTDC for further study on the transient stability.The comparison between the simulative and the experimental results shows the correctness and the feasibility of the system mentioned in this paper.
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