How to parameterize Simplified Synchronous Machine pu unit in MATLAB/Simulink?

I would like to make a 10-20MW synchronous machine with 2-3s of inertia and 0-0,6 damping factor but i am failed to parameterize the synchronous machine right. I have huge oscillations when i try to lower or higher the Pm -> Pe output. What did i wrong and how to parameterize/initialize the machine with the above values?

Answer 1

[Pratik]

Hi Gergerly,

In my understanding you are trying to set the parameters for “Simplified Synchronous Machine pu unit” and want to know why there is huge oscillations when trying to lower or higher the Pm-Pe output.

1. To set the parameter, you can use Block Parameters Dialog Box. To edit a parameter using the Block Parameters dialog box:

• Double-click on the block. The Block Parameters dialog box appears.
• In the Block Parameters dialog box, find the name of the parameter whose value you want to edit.
• Edit the parameter value in the corresponding text box. when you edit a parameter value, the text box turns yellow. Please refer to the image below for the information regarding the parameter values in the dialog box.
• Click OK.

2. The oscillations you're experiencing when attempting to adjust the mechanical power (Pm) to electrical power (Pe) output indicate a potential instability within your system. To address this issue, you should conduct a thorough stability analysis of your system.

Please refer to the following “Edit Block Parameters” documentation link for more information about editing block parameters:

https://in.mathworks.com/help/simulink/ug/edit-block-parameters.html

Please refer to the following “Stability Analysis” documentation link for more information on stability analysis of system:

https://in.mathworks.com/help/control/stability-margins.html

Hope this helps!