This information is part of the Modelica Standard Library maintained by the Modelica Association.

At start time tOn voltages are supplied to the induction machines with sliprings. The two machine start from standstill, accelerating inertias against load torque quadratic dependent on speed, using a starting resistance. At time tRheostat external rotor resistance is shortened, finally reaching nominal speed. Two equivalent machines with different numbers of phases are compared and their equal behavior is demonstrated.

Simulate for 1.5 seconds and plot (versus time):

• aimcM|M3.tauElectrical: machine torque
• aimsM|M3.wMechanical: machine speed
• feedback.y: zero since difference of three-phase current phasor and scaled polyphase current phasor are equal

m	Value: 5 Type: Integer Description: Number of stator phases
mr	Value: 5 Type: Integer Description: Number of rotor phases
VsNominal	Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase
fNominal	Value: aimsData.fsNominal Type: Frequency (Hz) Description: Nominal frequency
tOn	Value: 0.1 Type: Time (s) Description: Start time of machine
RStart	Value: 0.16 / aimsData.turnsRatio ^ 2 Type: Resistance (Ω) Description: Starting resistance
tRheostat	Value: 1.0 Type: Time (s) Description: Time of shortening the rheostat
T_Load	Value: 161.4 Type: Torque (N·m) Description: Nominal load torque
w_Load	Value: Modelica.Units.Conversions.from_rpm(1440.45) Type: AngularVelocity (rad/s) Description: Nominal load speed
J_Load	Value: 0.29 Type: Inertia (kg·m²) Description: Load inertia
aimsData	Value: Type: IM_SlipRingData Description: Induction machine data