To　improve　the　test　efficiency　and　reduce　the　test　cost　and　risk　for　the　motor　system,　the　power-level　real-time　simulation　method　of　brushless　DC　motor　(BLDCM)　in　regenerative　braking　process　was　presented　in　this　paper.　The　winding　of　the　real　BLDCM　was　simulated　by　the　power-level　current　source　of　the　virtual　BLDCM.　Then,　the　electric　power　can　be　interacted　between　the　virtual　BLDCM　and　motor　driver.　The　bilinear　transformation　and　inverse　Z-transform　method　were　used　to　derive　the　numerical　model　based　on　line　voltage.　The　current　path　and　the　relationship　between　the　voltage　and　current　of　the　virtual　BLDCM　with　regenerative　braking　were　analyzed.　The　acquiring　method　of　the　virtual　winding　voltage　in　the　regenerative　braking　process　was　presented　to　calculate　the　BLDCM　numerical　model.　Based　on　the　power-level　virtual　BLDCM　experimental　platform,　the　real-time　simulation　with　regenerative　braking　was　performed.　Furthermore,　the　offline　simulation　of　BLDCM　with　regenerative　braking　was　performed　by　using　MATLAB　software　to　verify　the　experimental　results.　Results　show　that　both　transient　and　steady　state　of　the　BLDCM　can　be　simulated　accurately　without　changing　any　hardware　of　the　motor　driver,　and　the　real-time　simulation　of　power-level　virtual　BLDCM　in　the　regenerative　braking　process　can　be　realized　effectively.　©　2019,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.