Inductive　power　transfer　(IPT),　as　a　method　of　wireless　power　transfer　(WPT)　via　magnetic　induction,　can　be　applied　to　electric　vehicles　(EVs)　due　to　its　convenience　and　automation.　Interoperability　and　misalignment　tolerance　are　both　major　research　difficulties　for　WPT　of　EVs.　This　paper　proposes　a　two-channel　topology　and　a　coil　optimization　method,　which　can　improve　misalignment　tolerance　for　the　unipolar　coil　(Q)　and　interoperate　with　the　bipolar　coil　(DD).　Firstly,　a　topology　with　phase　shift　strategy　is　constructed　to　increase　output　ability　with　Y　misalignments　and　the　mathematical　model　of　the　proposed　topology　is　established.　Secondly,　a　coil　density　optimization　method　is　presented　to　smooth　the　transmitting　mutual　inductances　fluctuation.　Finally,　a　1-kW　prototype　is　built　to　verify　the　proposed　system　which　can　achieve　load-independent　constant-current　charging.　With　the　Y　misalignment　of　150　mm,　the　experimental　results　agree　well　with　the　theoretical　analysis.　The　proposed　system　is　able　to　interoperate　with　two　types　of　coils　and　can　achieve　misalignment　tolerance.　Authors