At start time tOn three-phase voltage is supplied
to the
induction machine with sliprings. The machine starts 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.
Simulate for 1.5 seconds and plot (versus time):
currentRMSsensorM|E.I: equivalent RMS stator
currentaimsM/E.wMechanical: machine speedaimsM|E.tauElectrical: machine torque