Design and comparison of two kinds of primary wound field flux-switching linear motors

Purpose The purpose of this paper is to propose the complementary design rules, give a quantitative comparison, and analysis the force production mechanism of the two kinds of primary wound field flux-switching linear motors. Design/methodology/approach Primary wound field flux-switching linear (PWFFSL) motors have the merits of no rare-earth magnet, low cost and a wide operation range, in which the armature windings and the field windings are all located at the short primary mover while the secondary is very robust. Hence, the PWFFSL motor is ideal for rail transportation systems which need a long stator and a wide speed range. In order to overcome the disadvantages of the existing PWFFSL motors, the new complementary design rules will be proposed. Also, to offer a better PWFFSL motor for the rail transportation systems, it is necessary to investigate different structures of the PWFFSL motors and give a comprehensive comparison. In order to predict the force performance of the two kinds of PWFFSL motors ...