船舶驱动用直线同步电机牵引力特性计算

Calculation of propulsion force characteristics of linear synchronous motor for ship drive

船舶驱动用直线同步电机的牵引力特性对其性能提升有着显著的影响。为此,基于虚功原理,提出了一种新型超导直线同步电机的牵引力特性的解析计算方法--双边傅里叶分解方法。首先,对该系统的整体结构和牵引原理做了简单介绍;接着通过磁悬浮系统储能的变化,推导了该直线同步电机的牵引力解析表达式;最后利用有限元仿真验证了该原理计算的准确性,分析结果表明该解析模型具有相当的准确性。本文提出的新型解析模型对船舶驱动用一体化直线同步电机的电磁结构设计方案提供了快速准确的研究方法。

The propulsion force characteristics of linear synchronous motors for ship propulsion have a significant impact on their performance improvement.Therefore,based on the principle of virtual work,a new analytical calculation method--bilateral Fourier decomposition method is proposed for the propulsion force characteristics of superconducting linear synchronous motors.Firstly,a brief introduction is given to the overall structure and propulsion principle of the system;Then,by analyzing the changes in energy storage in the magnetic levitation system,the analytical expression for the propulsion force of the linear synchronous motor is derived;Finally,the accuracy of the calculation is verified through finite element simulation,and the analysis results show that the analytical model has considerable accuracy.The proposed novel analytical model provides a fast and accurate research method for the electromagnetic structure design of integrated linear synchronous motors for ship propulsion.