Study of Two Kinds of Double-Sided Yokeless Linear Flux-Switching Permanent Magnet Machines

Two yokeless linear flux-switching permanent magnet (LFSPM) machines are studied in this paper. Here, a double-sided LFSPM machine with yokeless secondary and a double-sided LFSPM machine with yokeless primary are analyzed with emphasize on the structure, flux distribution and trust force. Beside, the cogging forces of the two machines are reduced by shift a horizontal displacement between the stator tooth of both sides. Based on the FEA results, valuable conclusions are obtained.