POLITECHNIKA WARSZAWSKA

A4. Notation
- u s - stator voltage space vector
- u sx , u sy - stator voltage vector components of the induction motor in
field-oriented x, y coordinates
- u sα , u sβ - stator voltage vector components of the induction motor in
stationary α, β coordinates
• x - reactance, p.u. value calculated for nominal frequency
- x M - induction motor main reactance
- x r - rotor windings self-reactance
- x s - stator windings self-reactance
- x σ - total leakage reactance of the induction motor
• η- neural network learning rate
• ψ - flux, p.u. value
- ψ r - rotor flux space vector
- ψ rx , ψ ry - rotor flux vector components of the induction motor in fieldoriented
x, y coordinates
- ψ rα , ψ rβ - rotor flux vector components of the induction motor in
stationary α, β coordinates
- ψ s - stator flux space vector
- ψ sx , ψ sy - stator flux vector components of the induction motor in fieldoriented
x, y coordinates
- ψ sα , ψ sβ - stator flux vector components of the induction motor in
stationary α, β coordinates
• σ - total leakage factor
• ω - angular speed, p.u. value
- ω m - angular speed of the motor shaft
- ω r - slip angular speed
- ω s - synchronous angular speed
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