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Permanent magnet synchronous machine fed by an ideal inverter

An ideal frequency inverter is modeled by using VfControllers and SignalVoltagess. Frequency is raised by a ramp, causing the permanent magnet synchronous machines to start, and accelerate the inertias. Two equivalent machines with different numbers of phases are compared and their equal behavior is demonstrated.

At time tStep a load step is applied. 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: smpmData.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: 181.4 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
smpmData	Value: Type: SM_PermanentMagnetData Description: Synchronous machine data