Creating a Time-Varying RLC Custom Load Component in MATLAB Simulink

I am modeling a power system (AC, generator , transmission line, and dynamic load) to analyze the voltage and current transients across the load using MATLAB Simulink 2024b.

Since I could not find an RLC dynamic load in MATLAB Simulink (see attached file), I created a custom component (an RLC dynamic load) in Simscape by modifying the source code for a resistor component from the Foundation Library (blue component) to adapt it into an RLC series component. I successfully created a dynamic component.

However, I am having difficulty connecting this custom RLC dynamic load component with other components from the Specialized Power Systems library (black components). Could you please assist me with this issue?

PS : The source code for the RLC component is not available in the MathWorks library. Please refer to the attached file for details on the type of RLC dynamic load I want to implement in my model and the challenges I am currently encountering.

Best Regards,

Answer 1

[Kothuri]

Hi Omar Nait Mensour,

To connect the custom RLC dynamic load component with other components from Specialized Power Systems library, you need to bridge the two libraries.

• Simscape uses physical modeling, while Specialized Power Systems is designed for electrical power systems simulations with discrete solver support.
• Direct connections between Simscape (blue) and Specialized Power Systems (black) components are not allowed.
• You need to use a "PS-Simulink Converter" to connect Simscape components with Specialized Power Systems components and "Simulink-PS converter" for vice-versa.

You can refer the below documentation link for more information on PS-Simulink converter and Simulink-PS converter

https://www.mathworks.com/help/simscape/ref/pssimulinkconverter.html?&s_tid=srchtitle_support_results_1_ps-simulink

https://www.mathworks.com/help/simscape/ref/simulinkpsconverter.html?&s_tid=srchtitle_support_results_2_ps-simulink