In　order　to　improve　the　simulation　accuracy　of　the　permanent　magnet　synchronous　motor　(PMSM)　control　system,　a　collaborative　simulation　method　with　high　simulation　accuracy　and　low　requirements　on　computer　performance　is　proposed.　A　3kW　PMSM　is　researched.　Firstly,　the　2D　finite　element　model　of　the　PMSM　is　established　using　ANSYS　Maxwell.　Secondly,　the　equivalent　circuit　extraction　(ECE)　model　is　established　based　on　the　2D　finite　element　model.　Meanwhile,　the　motor　control　algorithm　model　and　inverter　circuit　model　are　built　using　MATLAB　Simulink　and　ANSYS　Simpler,　respectively.　Finally,　the　ECE　model,　the　control　model,　and　the　inverter　model　are　used　for　collaborative　simulation.　The　co-simulation　results　and　the　Simulink　simulation　results　are　compared　with　the　experiment.　The　experiment　results　show　that　the　co-simulation　accuracy　of　total　harmonics　distortion　(THD)　of　phase　current　and　the　high-frequency　current　harmonics　can　be　improved　by　36.8%　and　23.5%,　respectively.　©　2023　IEEE.