Class Description

The electrical equations of all variations of the asynchronous model are based on the AsynchronousEquivalentCircuit diagram for the direct- and quadrature- axes, with two equivalent rotor windings in each axis.
Equations for conversion between equivalent circuit and time constant reactance forms:
Xs = Xm + Xl
X' = Xl + Xm x Xlr1 / (Xm + Xlr1)
X'' = Xl + Xm x Xlr1 x Xlr2 / (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2)
T’o = (Xm + Xlr1) / (omega0 x Rr1)
T'‘o = (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2) / (omega0 x Rr2 x (Xm + Xlr1)
Same equations using CIM attributes from AsynchronousMachineTimeConstantReactance class on left of “=” and AsynchronousMachineEquivalentCircuit class on right (except as noted):
xs = xm + RotatingMachineDynamics.statorLeakageReactance
xp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 / (xm + xlr1)
xpp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 x xlr2 / (xm x xlr1 + xm x xlr2 + xlr1 x xlr2)
tpo = (xm + xlr1) / (2 x pi x nominal frequency x rr1)
tppo = (xm x xlr1 + xm x xlr2 + xlr1 x xlr2) / (2 x pi x nominal frequency x rr2 x (xm + xlr1).

Attributes

Name Type Description
rr1 PU Damper 1 winding resistance.
rr2 PU Damper 2 winding resistance.
xlr1 PU Damper 1 winding leakage reactance.
xlr2 PU Damper 2 winding leakage reactance.
xm PU Magnetizing reactance.

Relationships

Inherits from

Descendant classes

  • No descendant classes

Leaf/Root class

IsLeaf IsRoot
False False

Associations

None