An optimized I/f startup control method of permanent magnet synchronous motor for ship propulsion
Intended to address the disadvantages of the permanent magnet synchronous motor for ship propulsion with high torque and inertial when using open-loop I/f control,including torque fragility,prone to loss of synchronism and low ef-ficiency,a method of improving I/f control is proposed.Establishing a torque angle observer allows the amplitude of the giv-en current vector to be adjusted to track the load torque,thus improving the robustness of the system.meanwhile,the motor is operating close to the condition of maximum torque/current,improving motor efficiency.the angular speed of the current vector is corrected by the instantaneous active power,which reduces torque fluctuations and accelerates the motor speed con-vergence process.In conclusion,simulation experiments are performed in Matlab/Simulink,the experimental results show that the method has significantly improved the operating efficiency and stability of the propulsion engine.
permanent magnet synchronous motorI/f controlinstantaneous active powerobservation of angle between current vector and flux linkage
万方数据
维普
