Design and Analysis of Novel Doubly Salient Linear Hybrid Excited Machine

In this paper, a novel doubly salient linear hybrid excited machine (DSLHEM) is proposed. The armature and field windings of the proposed design are non-overlapped. The iron bridge is designed next to PM to offer a second magnetic flux path for DC excitation. This will increase the magnetic flux and hence the thrust force. The proposed machine has all excitation sources housed on the mover, and the stator is completely passive, which makes it suitable for long stroke applications. Field windings are used, which improves the flux linkage, and hence the proposed machine has better flux regulation capacity at different field currents. The design parameters are optimized using parametric optimization. Finally, the proposed machine is compared with a conventional machine, 8.89% higher average thrust force (TF
avg
) was achieved with a 53% reduction in the volume of PM while keeping the volume of the whole machine constant.