MATLAB: How to tune the inertia of an asynchronous machine in SimpowerSystems
Simscape Electrical
I am trying to model a crane using SimPowerSystems.
The issue is that the inertia in the system should change and I cannot replicate this behaviour as i have no way of modifying the inertia during Simulation.
Best Answer
It is true that the parameters inside the asynchronous machine block are not tunable.
As a workaround, you can do the following (see example model power_pwm_TS):
-Provide input speed to the electrical machine.
In that case, the machine would not take any mechanical model into account. The machine only outputs electrical torque at a given rotor speed.
-Compute speed as a function of the torque in Simulink
You can simply compute the input speed as a function of the electrical torque with Simulink blocks. The parameters of this Simulink algorithm can be tunable.
If speed is your input variable, then you are defining what the speed will be. Thus, modeling the inertia and friction internally have no meaning. If you wish to take these into account you must do this externally where you are calculating the speed.
Best Answer