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

An ideal frequency inverter is modeled by using a VfController and a three-phase SignalVoltage. Frequency is driven by a load cycle of acceleration, constant speed, deceleration and standstill. The mechanical load is a constant torque like a conveyor (with regularization around zero speed).

Simulate for 20 seconds and plot (versus time):

• currentQuasiRMSSensor|currentQuasiRMSSensorQS.I: stator current RMS
• imc|imcQS.wMechanical: machine speed
• imc|imcQS.tauElectrical: machine torque

Default machine parameters are used.

m	Value: 3 Type: Integer Description: Number of phases
VNominal	Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase
fNominal	Value: imcData.fsNominal Type: Frequency (Hz) Description: Nominal frequency
wNominal	Value: 2 * pi * fNominal / imcData.p Type: AngularVelocity (rad/s) Description: Nominal speed
TLoad	Value: 161.4 Type: Torque (N·m) Description: Nominal load torque
JLoad	Value: 0.29 Type: Inertia (kg·m²) Description: Load's moment of inertia
r	Value: 0.05 Type: Length (m) Description: Transmission radius
imcData	Value: Type: IM_SquirrelCageData Description: Induction machine data