At start time tStart voltages are supplied to the
polyphase induction machines with squirrel cage. The machines
starts from standstill, accelerating inertias against load torque
quadratic dependent on speed, finally reaching nominal speed. Three
equivalent machines with different parameter
ratioCommonLeakage are compared. Note that due to the
mode of operation, the behaviour of all three machines is
identical. Only when fed by switching power electronics, parameter
ratioCommonLeakage is essential.