“…The SDA has been so far applied to different electrical machines such as surface-inset PM [20][21][22], surface-mounted PM [23,24], interior PM [25,26], PMs with shielding cylinder [27], PM brushless [28], spoke-type PM [29,30], doublysalient [31], switched reluctance [32,33], flux switching [34], superconducting reluctance machine [35], toroidal winding [36], and magnetic gear [37][38][39]. Besides, the SDA has been applied to a rotating PM Vernier machine [40], and the results are compared with a magnetic-geared machine.…”