#### Description

This example investigates a time transient polyphase induction machine.
An ideal frequency inverter is modeled by using a simple
voltage frequency controller
and a polyphase voltage source with signal input.
Frequency is raised by a ramp up to nominal frequency, causing the induction machine with squirrel cage to start,
and accelerating inertias. At time `tStep`

a load step is applied.

#### Plot the following variable(s)

`fActual`

: actual supply frequency
`voltageRMSSensor.V`

: quasi RMS stator voltage
`imc.stator.abs_Phi`

: magnitude of stator flux
`imc.tauElectrical`

: electromagnetic torque
`imc.wMechanical`

: speed
`currentRMSSensor.I`

: quasi RMS stator current

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