Two　novel　experimental　methods　of　acquiring　dq　inductance　of　permanent　magnet　synchronous　motors　(PMSM)　are　presented　to　improve　the　previous　experimental　methods.　Based　on　the　experimental　wiring　diagrams,　the　mathematical　models　of　equivalent　impedances　of　PMSM　in　the　motor　terminals　are　derived　by　impedance　decoupling　analysis.　It　is　revealed　that　with　the　different　position　of　the　motor　rotor,　there　are　specific　multiple　relationships　between　the　terminal　equivalent　inductance　and　dq　inductance　when　the　modulus　of　terminal　equivalent　impedances　is　in　minimum　or　maximum.　Some　previous　researches　indicate　that　with　conventional　AC　method,　dq　inductance　is　less　affected　by　AC　armature　currents,　so　the　methods　presented　in　this　paper　are　valid　to　quickly　and　effectively　acquire　the　dq　inductance　by　simply　rotating　the　rotor　with　hand　and　measuring　the　impedance　with　test　instruments.　The　methods　are　approved　to　be　effective　and　practicable　by　the　practical　test　with　some　PMSM.