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首页> 外文会议>International Conference on Ecological Vehicles and Renewable Energies >Thrust ripple and inductances characteristics of a hybrid-excited flux-switching linear machine
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Thrust ripple and inductances characteristics of a hybrid-excited flux-switching linear machine

机译：混合励磁开关线性电机的推力脉动和电感特性

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摘要

Hybrid-excited flux-switching linear machine (HEFSLM) adjusts the air gap flux density by DC excitation current, which may have great influence on its performances and parameters, such as thrust force, thrust ripple, inductances and etc. This paper mainly investigates its thrust ripple and inductances characteristics under different DC excitation currents with the frozen permeability (FP) method based on finite element analysis (FEA). By the thrust ripple separation, the on-load thrust ripple is divided into three components, which stem from different causes respectively. Although the longitudinal end effect is the biggest cause, the DC current is another great factor because of the aggravated magnetic saturation level particularly under flux-weakening condition, which is totally different from traditional hybrid-excited machine. To on-load d-axis and q-axis (d-q) inductances, they also vary along with the increase of DC excitation current. Moreover, their difference is not zero and excitation level dependent, which indicating the on-load reluctance force cannot be neglected. The results are beneficial to optimization design and parameter identification of HEFSLMs.
机译：混合励磁磁通切换线性电机（HEFSLM）通过直流励磁电流调节气隙磁通密度，这可能对其性能和参数（如推力，推力脉动，电感等）产生很大影响。基于有限元分析（FEA）的冻结磁导率（FP）方法在不同的DC励磁电流下获得推力脉动和电感特性。通过推力波动分离，将有载推力波动分为三个部分，分别来自不同的原因。尽管纵向端效应是最大的原因，但是直流电流是另一个重要因素，特别是在弱磁通条件下，由于磁饱和水平的提高，这与传统的混合励磁电机完全不同。对于有负载的d轴和q轴（d-q）电感，它们还会随着直流激励电流的增加而变化。此外，它们的差值不为零且与激励水平有关，这表明不能忽略负载磁阻力。结果对HEFSLM的优化设计和参数辨识是有益的。

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