船用三相异步电机转速分段PI控制的仿真研究

摘要

Based on the synchronous rotating coordinate system, the mathematical model of the marine three-phase asynchronous motor is analyzed and meanwhile its rotor flux orientation vector control strategy is studied. In order to achieve fast response and improve the dynamic and static performance of the system, a new method of outer Speed segment PI control is presented based on traditional speed and torque dual closed loop. The Matlab simulation model is established to compare the difference between speed segment PI control and traditional one-parameter PI control in motor performance control. The simulation results show the accuracy of the proposed motor control model. The proposed speed segment PI con-trol method has a better control accuracy and dynamic and static speed control performance, can adapt to various complex operating conditions of ships and enhance system robustness.%基于同步旋转坐标系对船用三相异步电机数学模型进行分析,研究其转子磁链定向矢量控制策略,为实现快速响应、提高系统动静态性能,在传统转速转矩双闭环PI控制基础上提出了外环转速分段PI控制新方法.建立Matlab仿真模型,对比分析转速分段PI控制与传统转速单参数PI控制在电机性能控制的差异性,仿真结果表明了所建电机控制模型的准确性,提出的分段PI控制新方法具有更好的控制精度及动静态调速性能,能够适应船舶各种复杂的运行条件,可增强系统鲁棒性.