Transformer modeling in Simulink - Step-by-Step Execution

Concept Flow - Transformer modeling

Define Transformer Parameters

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Create Transformer Blocks

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Set Input Voltage & Load

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Run Simulation

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Observe Output Voltage & Current

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Analyze Transformer Behavior

This flow shows how transformer modeling in Simulink starts with defining parameters, building blocks, running simulation, and analyzing outputs.

Execution Sample

Simulink

transformer = simscape.Transformer('Power',1000,'Voltage',230);
simIn = simscape.SimulationInput('TransformerModel');
simOut = sim(simIn);
voltageOut = simOut.logsout.getElement('Voltage').Values.Data;
currentOut = simOut.logsout.getElement('Current').Values.Data;

This code sets up a transformer model, runs the simulation, and extracts output voltage and current data.

Execution Table

Step	Action	Parameter/Variable	Value	Result/Output
1	Define transformer power rating	Power	1000 VA	Transformer block created with 1000 VA
2	Define transformer voltage rating	Voltage	230 V	Transformer block voltage set to 230 V
3	Load Simulink model	Model	TransformerModel	Model loaded and ready
4	Run simulation	SimulationInput	simIn	Simulation started
5	Simulation running	Time	0 to 1 sec	Voltage and current waveforms generated
6	Extract output voltage	voltageOut	Array of voltage values	Voltage data ready for analysis
7	Extract output current	currentOut	Array of current values	Current data ready for analysis
8	End	-	-	Simulation complete, data available

💡 Simulation completes after 1 second, output data extracted for voltage and current

Variable Tracker

Variable	Start	After Step 4	After Step 6	Final
transformer	undefined	Transformer object with 1000 VA, 230 V	Same	Same
simIn	undefined	Simulation input for TransformerModel	Same	Same
simOut	undefined	undefined	Simulation output object	Same
voltageOut	undefined	undefined	Array of voltage values	Same
currentOut	undefined	undefined	Array of current values	Same

Key Moments - 3 Insights

Why do we define transformer parameters before running the simulation?

Defining parameters like power and voltage sets up the transformer model correctly, as shown in steps 1 and 2 of the execution_table. Without these, the simulation cannot run properly.

What does the simulation output object contain?

The simulation output (simOut) holds all the results from the simulation, including voltage and current waveforms, as seen in steps 6 and 7 where we extract voltageOut and currentOut.

Why do we extract voltage and current after simulation?

Voltage and current data are generated during simulation (step 5) but must be extracted explicitly (steps 6 and 7) to analyze or visualize transformer behavior.

Visual Quiz - 3 Questions

Look at the execution_table, what is the value of 'Power' when the transformer block is created?

A 1000 VA

B 230 V

C Undefined

D SimulationInput

💡 Hint

Check Step 1 in the execution_table where transformer power is defined.

At which step does the simulation start running?

A Step 3

B Step 4

C Step 5

D Step 6

💡 Hint

Look for the action 'Run simulation' in the execution_table.

If we change the transformer voltage to 460 V, which step in the execution_table would change?

A Step 1

B Step 2

C Step 4

D Step 7

💡 Hint

Voltage is set in Step 2 according to the execution_table.

Concept Snapshot

Transformer Modeling in Simulink:
- Define transformer parameters (power, voltage)
- Build transformer block in model
- Set input voltage and load
- Run simulation to generate voltage/current
- Extract and analyze output data
- Use simscape.Transformer and sim() functions

Full Transcript

Transformer modeling in Simulink involves defining key parameters like power and voltage first. Then, you create the transformer block in your Simulink model. After setting the input voltage and load, you run the simulation. During simulation, voltage and current waveforms are generated. After simulation completes, you extract these outputs for analysis. This process helps you understand transformer behavior step-by-step.