In　this　paper,　an　accurate　analytical　subdomain　model　to　calculate　electromagnetic　performances　of　bearingless　flux-switching　permanent　magnet　(BFSPM)　machines　is　developed.　The　entire　region　of　the　machine　is　divided　into　six　subdomains,　including　slots,　air　gap,　magnets,　and　so　on.　According　to　the　Neumann　boundary　conditions　between　the　subdomains　and　the　iron　and　the　continuity　conditions　at　the　interface　between　the　adjacent　subdomains,　the　magnetic　field　distributions　of　subdomains　are　obtained　by　solving　the　Maxwell　equations.　In　addition,　a　method　to　compensate　the　saturation　effect　is　proposed,　and　the　magnetic　saturation　of　the　stator　and　rotor　is　considered　by　the　actual　B-H　characteristics.　Based　on　the　proposed　analytical　method,　the　air-gap　flux　density　distributions　of　the　machine　with　different　iron　material　under　linear　and　nonlinear　conditions　are　predicted.　Further,　the　electromagnetic　performances　including　the　cogging　torque,　electromagnetic　torque,　flux　linkage,　back-EMF,　inductance,　and　suspension　force　are　calculated.　These　analytical　results　are　compared　with　those　obtained　by　the　Finite　Element　Analysis　(FEA)　to　verify　the　accuracy　of　the　proposed　analytical　method.　©　2013　IEEE.