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首页> 外文期刊>International journal of applied electromagnetics and mechanics >Force performance investigation of linear induction motor for low-speed Maglev train with an improved equivalent circuit model
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Force performance investigation of linear induction motor for low-speed Maglev train with an improved equivalent circuit model

机译：具有改进的等效电路模型的低速Maglev火车线性感应电动机的力性能研究

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摘要

In order to fast calculate the thrust force and normal force of linear induction motor (LIM) for low-speed maglev train under overall conditions including traction and braking, this paper proposes an improved equivalent circuit (EC) method. Firstly, the improved equivalent circuit model is proposed based on the traditional one by adopting a precision correction factor, which can accurately consider the transverse edge effect of cap-shape secondary conducting sheet. Moreover, the permeability of back-iron and magnetic inductance are amended considering the saturation effect. The corresponding calculation procedure is given out. Then, the precise correction factor is investigated based on 2D finite element (FE) model. By comparison with the traditional Russell and Norsworthy correction factor (RNF), the precision correction factor is proved to be more suitable to LIM with wide-range slip frequency. Finally, the thrust force and normal force of LIM with different slip frequency are predicted under braking and traction conditions by improved EC method. The predicted results and the proposed method are validated by 3D FE method and experiment results.
机译：为了快速计算线性感应电动机（LIM）在整体条件下为低速Maglev火车的推力和正常力，包括牵引和制动，提出了一种改进的等效电路（EC）方法。首先，通过采用精密校正因子，基于传统校正因子来提出改进的等效电路模型，这可以准确地考虑帽形二次导电片的横向边缘效应。此外，考虑到饱和效应，修正了背铁和磁电感的渗透性。给出相应的计算过程。然后，基于2D有限元（FE）模型来研究精确的校正因子。通过与传统的罗素和无校正校正因子（RNF）进行比较，精确校正因子被证明更适合于宽范围的滑移频率。最后，通过改进的EC方法在制动和牵引条件下预测具有不同滑动频率的速度和正常力。通过3D FE方法和实验结果验证了预测结果和所提出的方法。

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