ObservetheTerminalVoltage(Data Collection)VoltageUsethis curvetoidentifyRpand CpSlowfinal riseV2toOcV,Immediaterise involtage,V,VoUsethisjumptoidentifyRTimeTimeofcurrentinterruptVocychangesslowlyandisassumedtobeaconstant.The RC branch is at the steady state, so that V,is a constant before switching
Observe the Terminal Voltage (Data Collection) Use this curve to identify Rp andCp Use this jump to identifyR V1 V2 V0 • Vocv changes slowly and is assumed to be a constant. • The RC branch is at the steady state, so that Vp is a constant before switching
CalculationofParameters(1) Voc,= Vo +Vi + V2VR:(2) V。 +Vi = Vocv - I(0-)R=)I(0-)V2R=(3) V2 = V,(O) = R,I(0-) =)I(0-)(4) V =V,(0), V,(t) = V,(0)e R.c, Use any data point on the curve to calculate C
Calculation of Parameters t RpCp V1 − (1) Vocv = V0 +V1+V2 (2) V0 +V1 =Vocv − I(0−)R R = I(0−) V2 (3) V2 = Vp (0) = Rp I(0−) R = I(0−) (4) V2 =Vp (0), Vp (t) =Vp (0)e Use any data point on the curve to calculate Cp