基于MPTC的船舶推进电机新型SMO

电力推进船舶是未来绿色船舶的重要发展方向。针对传统滑模观测器(SMO)应用在推进电机上的两个主要不足，在模型预测转矩控制策略(MPTC)的基础上提出一种新型SMO方案。针对传统SMO存在的抖振问题，利用Sigmoid函数代替sign函数对推进电机等效反电动势进行估计予以抑制，此外利用变截止频率低通滤波器以及锁相环技术消除传统SMO中低通滤波效应引起的相位延迟的同时提高转子转速和位置信息的观测精度。基于MATLAB/Simulink仿真平台验证了新型SMO具有更好的动、静态性能。

Research on New SMO of Marine Propulsion Motor Based on MPTC

Electric propulsion ships are an important development direction for future green ships. Aiming at two main deficiencies of traditional SMO applied to propulsion motors, a new SMO scheme is proposed based on MPTC. Aiming at the chattering problem of the traditional SMO, the Sigmoid function is used instead of the sign function to suppress the equivalent back EMF of the propulsion motor. In addition, the low-pass filter and the phase-locked loop technology are used to eliminate the low-pass filtering effect in the traditional SMO. The phase delay increases the observation accuracy of the rotor speed and position information. Based on the MATLAB/Simulink simulation platform, the new SMO has better dynamic and static performance.