关键词: 混合励磁直线电动机, 混合励磁, 电磁性能, 磁链, 反电动势, 定位力

Abstract:

A new hybrid excitation linear motor (HELM) was analyzed. The proposed motor has the modular structure. The excitation magnetic field was excited by permanent magnet and DC field windings, the air gap flux density can be regulated by changing the magnitude and direction of the DC excitation current, so the proposed motor has field-regulation ability. The proposed motor can be used as the driving motor of urban rail transit, and is suitable for long stator. The finite element analysis software was used to analyze its working principle and electromagnetic performance, which verifies the rationality of the proposed motor.

Key words: hybrid excitation linear motor (HELM), hybrid excitation, electromagnetic performance, flux linkage, back electromotive force, detent force