How to simulate equivalent circuit of a transformer referred to primary side in Matlab?

I was given an assignment to demonstrate a three-phase transformer simulation using Matlab Simulink. I have to demonstrate the simulations of simplified per phase equivalent circuit of a three-phase transformer referred to the primary side and demonstrate the simulations of simplified per phase equivalent circuit of a three-phase transformer referred to the secondary side. But I have no clue on what I should actually do in the Matlab simulation. My question is how do I simulate the below equivalent circuit in Matlab simulink or am I doing it wrong?

Answer 1

[Chaitanya]

Hi @randomnick,

Here's an example of how you can simulate the simplified per phase equivalent circuit of a three-phase transformer referred to the primary side in MATLAB Simulink.

1. Open Simulink and create a new model.

2. Drag and drop the necessary blocks from the Simulink Library Browser onto the model canvas. In this example, you will need the following blocks:

- "Voltage Source" block: Represents the primary side voltage source.

- "Resistor" block: Represents the primary side resistance.

- "Inductor" block: Represents the primary side inductance.

- "Transformer" block: Represents the transformer itself.

- "Scope" block: Used to visualize the output waveform.

3. Connect the blocks.

4. Double-click on each block to set its parameters. For example:

- Set the voltage value for the "Voltage Source" block.

- Set the resistance value for the "Resistor" block.

- Set the inductance value for the "Inductor" block.

- Set the turns ratio for the "Transformer" block.

5. Configure the simulation parameters by going to "Simulation" > "Configuration Parameters". Set the desired simulation time and solver options.

6. Run the simulation by clicking on the "Run" button.

7. Observe the results using the "Scope" block. Connect the output of the primary side of the transformer to the "Scope" block to visualize the waveform.

Remember to save your Simulink model for future use.

This example demonstrates a simple simulation of the primary side of a three-phase transformer using a voltage source, resistor, inductor, and transformer blocks. You can expand on this model by adding more components or connecting multiple phases to simulate a complete three-phase transformer system.

Note that the specific parameter values and connections may vary depending on the details of your equivalent circuit and the requirements of your assignment.

Hope this helps!