Hi Solis,
I understand that you are facing an issue with the initialization of a synchronous machine model when accounting for saturation.
This problem arises because the "machine initialization" tool does not consider the open-circuit saturation curve, leading to incorrect initial excitation voltage settings and resulting in initial transients during simulation.
To address this issue, you can follow these steps to achieve a steady-state operation that considers saturation:
- First, perform a load flow analysis without considering the machine's saturation. This will provide you with a steady-state operation point.
- Once you have the initial steady-state values, activate the saturation option in your synchronous machine model.
- Go to the Configuration Parameters in Simulink. Under the Data Import/Export menu, check the 'Final states' option.
- Run your simulation for a sufficient duration until the system reaches a new steady-state operation point considering saturation.
- Once the new steady-state is achieved, save the final states. These are stored in the ‘xFinal’ structure.
- Use the following MATLAB commands to save these states:
xInitial = xFinal;
save myModel_init xInitial;
- For subsequent simulations, load the pre-saved initial states.
- Go back to the Configuration Parameters, uncheck 'Final states', and check 'Initial state' to use the saved initial conditions.
For more detailed steps on saving and reusing initial states you can refer to the MathWorks documentation link
Hope this helps!
