recordSynchronousMachineData
Computes machine parameter from usual datasheet
Extends from Modelica.Icons.Record (Icon for records).
Information
The parameters of the synchronous machine model with electrical excitation (and damper) are calculated from parameters normally given in a technical description, according to the standard EN 60034-4:2008 Appendix C.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.ApparentPower | SNominal | Nominal apparent power | |
| SI.Voltage | VsNominal | Nominal stator voltage per phase | |
| SI.Current | IsNominal | SNominal/(3*VsNominal) | Nominal stator current per phase |
| SI.Impedance | ZReference | VsNominal/IsNominal | Reference impedance |
| SI.Frequency | fsNominal | Nominal stator frequency | |
| SI.AngularVelocity | omega | 2*pi*fsNominal | Nominal angular frequency |
| SI.Current | IeOpenCircuit | Open circuit excitation current @ nominal voltage and frequency | |
| Real | effectiveStatorTurns | 1 | Effective number of stator turns |
| Real | turnsRatio | sqrt(2)*VsNominal/(omega*Lmd*IeOpenCircuit) | Stator current / excitation current |
| Real | x0 | Stator stray inductance per phase (approximately zero impedance) [pu] | |
| Real | xd | Synchronous reactance per phase, d-axis [pu] | |
| Real | xq | Synchronous reactance per phase, q-axis [pu] | |
| Real | xdTransient | Transient reactance per phase, d-axis [pu] | |
| Real | xdSubtransient | Subtransient reactance per phase, d-axis [pu] | |
| Real | xqSubtransient | Subtransient reactance per phase, q-axis [pu] | |
| SI.Time | Ta | Armature time constant | |
| SI.Time | Td0Transient | Open circuit field time constant Td0' | |
| SI.Time | Td0Subtransient | Open circuit subtransient time constant Td0'', d-axis | |
| SI.Time | Tq0Subtransient | Open circuit subtransient time constant Tq0'', q-axis | |
| Real | xmd | xd - x0 | Main field reactance per phase, d-axis [pu] |
| Real | xmq | xq - x0 | Main field reactance per phase, q-axis [pu] |
| Real | xe | xmd^2/(xd - xdTransient) | Excitation reactance [pu] |
| Real | xrd | xmd^2/(xdTransient - xdSubtransient)*(1 - (xmd/xe))^2 + xmd^2/xe | Damper reactance per phase, d-axis [pu] |
| Real | xrq | xmq^2/(xq - xqSubtransient) | Damper reactance per phase, d-axis [pu] |
| Real | rs | 2/(1/xdSubtransient + 1/xqSubtransient)/(omega*Ta) | Stator resistance per phase at specification temperature [pu] |
| Real | rrd | (xrd - xmd^2/xe)/(omega*Td0Subtransient) | Damper resistance per phase at specification temperature, d-axis [pu] |
| Real | rrq | xrq/(omega*Tq0Subtransient) | Damper resistance per phase at specification temperature, q-axis [pu] |
| Real | re | xe/(omega*Td0Transient) | Excitation resistance per phase at specification temperature [pu] |
| Material | |||
| SI.Temperature | TsSpecification | Specification temperature of stator resistance | |
| SI.Temperature | TsRef | Reference temperature of stator resistance | |
| Machines.Thermal.LinearTemperatureCoefficient20 | alpha20s | Temperature coefficient of stator resistance at 20 degC | |
| SI.Temperature | TrSpecification | Specification temperature of (optional) damper cage | |
| SI.Temperature | TrRef | Reference temperature of damper resistances in d- and q-axis | |
| Machines.Thermal.LinearTemperatureCoefficient20 | alpha20r | Temperature coefficient of damper resistances in d- and q-axis | |
| SI.Temperature | TeSpecification | Specification excitation temperature | |
| SI.Temperature | TeRef | Reference temperature of excitation resistance | |
| Machines.Thermal.LinearTemperatureCoefficient20 | alpha20e | Temperature coefficient of excitation resistance | |
| Result | |||
| SI.Resistance | Rs | Machines.Thermal.convertResistance(rs*ZReference, TsSpecification, alpha20s, TsRef) | Stator resistance per phase at TRef |
| SI.Inductance | Lssigma | x0*ZReference/omega | Stator stray inductance per phase |
| Real | ratioCommonStatorLeakage | 1 | Ratio of common stray inductance / total stray inductance of stator winding |
| SI.Inductance | Lmd | xmd*ZReference/omega | Main field inductance per phase in d-axis |
| SI.Inductance | Lmq | xmq*ZReference/omega | Main field inductance per phase in q-axis |
| SI.Inductance | Lrsigmad | (xrd - xmd)*ZReference/omega | Damper stray inductance in d-axis |
| SI.Inductance | Lrsigmaq | (xrq - xmq)*ZReference/omega | Damper stray inductance in q-axis |
| SI.Resistance | Rrd | Machines.Thermal.convertResistance(rrd*ZReference, TrSpecification, alpha20r, TrRef) | Damper resistance in d-axis at TRef |
| SI.Resistance | Rrq | Machines.Thermal.convertResistance(rrq*ZReference, TrSpecification, alpha20r, TrRef) | Damper resistance in q-axis at TRef |
| SI.Resistance | Re | 3/2*turnsRatio^2*Machines.Thermal.convertResistance(re*ZReference, TeSpecification, alpha20e, TeRef) | Excitation resistance at TRef |
| Real | sigmae | 1 - xmd/xe | Stray fraction of total excitation inductance |