WOLFRAM SYSTEM MODELER
TransformerExample of transformer with short circuit impedance, transmission resistances and load |
SystemModel["Modelica.Electrical.QuasiStatic.SinglePhase.Examples.Transformer"]
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This examples shows the operational behavior of transformer with short circuit impedance. The transformer is loaded with constant current magnitude of 250A but variable phase angle. The angle varies from 0 to 360 degrees within one second of simulation time.
Transformer data
V1N = 1000 V
V2N = 200 V
SN = 50 kVA
Zk = 0.72 Ohm + j*0.96 Ohm
Plot the real part of the secondary voltage idealTransformer.v2.re
on the x axis and idealTransformer.v2.im
on the y axis. The locus of this complex voltage v2
is a circle. The center of the circle is the primary supply voltage divided by the transformation ratio of n=5
. Since in this experiment the load current magnitude is constant, the voltage drop across the short circuit impedance of the transformer is constant, as well. The radius of the circle is equal to the constant magnitude of the voltage drop across the short circuit impedance.
voltageSource |
Type: VoltageSource Description: Constant AC voltage |
|
---|---|---|
idealTransformer |
Type: IdealTransformer Description: Ideal transformer |
|
sensor0 |
Type: PowerSensor Description: Power sensor |
|
zk |
Type: Impedance Description: Single-phase linear impedance |
|
load |
Type: VariableCurrentSource Description: Variable AC current |
|
sensorL |
Type: PowerSensor Description: Power sensor |
|
ground1 |
Type: Ground Description: Electrical ground |
|
ground2 |
Type: Ground Description: Electrical ground |
|
v2 |
Type: VoltageSensor Description: Voltage sensor |
|
polarToComplex |
Type: PolarToComplex Description: Converts polar representation to complex |
|
const |
Type: Constant Description: Generate constant signal of type Real |
|
ramp |
Type: Ramp Description: Generate ramp signal |
|
constFrequency |
Type: Constant Description: Generate constant signal of type Real |
|
i2 |
Type: CurrentSensor Description: Current sensor |
|
i1 |
Type: CurrentSensor Description: Current sensor |