Theanalysisandresearchab outcharacteristics,compositionandworkingprin cipleofthemiddle-to-lowspeedmaglevtractionp owersupplysystem,auxiliarypowersystemandc ontrolsystem,andtodescribethemainelectricale quipmentofpowersupplysystems,andintheguar anteeofsafety,highefficiency,andstabilityofthei mportantroleandsignificanceoftractionpowersu pplysystemdescribedinthemiddle-to-lowspeed maglevtrain,andtheimportantroleandsignifican tofthemiddle-to-lowspeedmaglevinthefutureof urbanrailtransit.