The　parity-time　(PT)　symmetric　principle　has　been　proved　that　it　can　improve　the　degree　of　freedom　of　the　wireless　power　transfer　(WPT)　system　with　multiple　repeaters,　while　maintaining　constant　transfer　efficiency　and　transmission　power.　This　article　presents　a　novel　three-coil　WPT　system　with　S/S/PS　compensation　network　based　on　the　PT　symmetry　principle　to　further　expand　the　exact　PT-symmetric　region　and　increase　the　output　power.　First,　the　PS　compensation　network　increases　the　order　of　the　system.　This　problem　has　been　solved　by　simplifying　the　PS　compensation　network　to　the　S　compensation　network　with　equivalent　circuit　theory.　Second,　it　is　found　that　the　proposed　system　has　smaller　critical　coupling　coefficient　and　is　able　to　provide　higher　output　power　compared　to　traditional　three-coil　PT-symmetric　system.　Third,　the　capacitance　distribution　ratio　can　be　designed　to　make　the　system　adapt　to　different　application　scenarios.　Finally,　an　experimental　prototype　48　W　is　developed　to　verify　the　proposed　system.　　©　1986-2012　IEEE.