Multi-domain modeling ofElectric PowerSteering withPMSM Drive System
Chinchul Choi, Wootaik Lee, Jung-Pyo Hong, Seong-Joo Kim, Jun–Gyu Song · 2007
Thispaper presents amulti-domain modeling strategyForeffective drives ofPMSM,thepowerconverter and ofElectric PowerSteering (EPS) fedbyPMSM drive systemscontroller arealso effectively developed andintegrated asthe whicharewidely beingapplied inautomotive application. PMSM drive system. Asthese electrical components arebeing Automotive control systems arecomplex systems involving givenmuchweighton thesystem, thecomplexity of multidisciplinary knowledge. According totheglowing numberautomotive control system israpidly increasing. ofadvanced electrical components likeESP,thecomplexity is rapidly increasing. Inorder toaccomplish complex analysis tasks,When desiging adnalin system, th thesystem ismodularized into components thataremodeled by useofgraphical dynamicsystemsimulation software is suitable domaindescriptions for reflecting specific popular asautomotive engineers toreduce thedevelopment characteristics. A PMSM andinverter arerepresented bythe time(3). Therearemanyautomotive sub-systems whichare interconnection ofcircuit elements. Ontheother hand, systemmodeledusingNIATLAB/Simulink whichisa defacto mechanism andloads aredescribed bydifferential oralgebraic standard tool incontrol andsystem engineering. ButSimulink equations. Finally, thecontroller whichincludes PWM basedequation-domain models arenotsufficient torepresent generators isrepresented intheir functional formsthatdescribeelectrical behaviour andcharacteristic. Forexample, the thebehavioral properties. And then, thoseareintegrated as switching characteristic ofinverter isnotnegligible inalow entire EPS modelforanalyzing systembehaviour with interactions between eachcomponent. TheMATLAB/Simulink, voltage system. Butitisdifficult that theeffects ofdeadtime whichisa defactostandard toolincontrol andsystemswitching technique aremodeledbyuseoftheequation- engineering, andSimPowerSystems environment areselected as domainrepresentation. Also, slight changes ina circuit are asolution oftheaccurate andintuitive multi-domain modeling of verycostly interms oftheinitial setup time. thePMSM driven EPSatthesystem level. To overcome theseproblems, ThePMSM driven EPS systemismodularized intocomponents asFig.1. Each