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

Synchronous machine with reluctance rotor fed by an ideal inverter

Ideal frequency inverters are modeled by using a VfController and phase SignalVoltages. Frequency is raised by a ramp, causing the reluctance machine to start, and accelerating inertias. At time tStep a load step is applied. 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
VsNominal	Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase
fsNominal	Value: smrData.fsNominal Type: Frequency (Hz) Description: Nominal frequency
fKnee	Value: 50 Type: Frequency (Hz) Description: Knee frequency of V/f curve
tRamp	Value: 1 Type: Time (s) Description: Frequency ramp
T_Load	Value: 46 Type: Torque (N·m) Description: Nominal load torque
tStep	Value: 1.2 Type: Time (s) Description: Time of load torque step
J_Load	Value: 0.29 Type: Inertia (kg·m²) Description: Load inertia
smrData	Value: Type: SM_ReluctanceRotorData Description: Synchronous machine data