船舶电力推进永磁容错电机模糊自适应PI控制

永磁容错电机(FTPMM)综合了永磁同步电机和开关磁阻电机的优点,可作为电推船的推进电机。在研究船用FTPMM结构及数学模型的基础上,对电机采用模糊自适应PI控制。误差大时,增加误差控制作用的权重,提高系统响应速度;误差小时,增加误差变化量控制作用的权重,使系统尽快进入稳态。通过仿真对比分析了模糊自适应PI控制策略相较于普通PI控制的优越性,并验证了其在船舶电力推进系统中应用的可行性。

Fuzzy Adaptive PI Control of FaultTolerant Permanet MagnetMotor Applied in Electric Propulsion Ship

Faulttolerant permanent magnet motor (FTPMM) combines the merits of permanent magnet synchronous motor and switch reluctance motor, so it can be used as the propulsion motor of electric propulsion ship. On the basis of analyzing the structure and mathematical model of FTPMM, the fuzzy adaptive PI control strategy was proposed. During the control process, if the error was large, the control weight of error would be increased so as to improve the response speed; if the error was small, the control weight of the change of error would be raised, so that the system could reach the steady state as soon as possible. The simulation model of electric propulsion ship system using the fuzzy adaptive PI control strategy in propulsion motor was built in MATLAB/simulink. From the simulation results, it was proved that the dynamic and static properties of FTPMM were improved in comparison with the traditional PI control, and the fuzzy adaptive PI control was suitable for the application in marine electric propulsion system.