Simulink Project for Electric Vehicle Model: Setup and Example

To create a Simulink project for an electric vehicle model, start by setting up a new project and adding blocks like Battery, Electric Motor, and Vehicle Dynamics from Simscape. Connect these blocks to simulate the vehicle's behavior and run the model to analyze performance.

Syntax

In Simulink, an electric vehicle model is built by connecting blocks that represent components. The main parts include:

• Battery block: Provides electrical energy.
• Electric Motor block: Converts electrical energy to mechanical torque.
• Vehicle Dynamics block: Simulates vehicle motion and forces.
• Controller block: Manages motor speed and torque.

These blocks are connected with signal and physical lines to form the complete model.

matlab

open_system(new_system('EV_Model'));
add_block('simscape/Foundation/Electrical/Electrical Sources/Battery','EV_Model/Battery');
add_block('simscape/Foundation/Mechanical/Rotational Elements/DC Motor','EV_Model/ElectricMotor');
add_block('simulink/Commonly Used Blocks/Integrator','EV_Model/VehicleDynamics');
add_block('simulink/Commonly Used Blocks/Gain','EV_Model/Controller');
add_line('EV_Model','Battery/1','ElectricMotor/1');
add_line('EV_Model','ElectricMotor/1','VehicleDynamics/1');
add_line('EV_Model','Controller/1','ElectricMotor/2');

Output

A new Simulink model named 'EV_Model' is created with Battery, Electric Motor, Vehicle Dynamics, and Controller blocks connected.

Example

This example shows how to create a simple electric vehicle model in Simulink using MATLAB commands. It sets up the main components and connects them to simulate basic vehicle behavior.

matlab

function createEVModel()
    % Create new model
    modelName = 'SimpleEVModel';
    new_system(modelName);
    open_system(modelName);

    % Add Battery block
    add_block('simscape/Foundation/Electrical/Electrical Sources/Battery',[modelName '/Battery'], 'Position', [30 100 80 140]);

    % Add Electric Motor block (using DC Motor as example)
    add_block('simscape/Foundation/Mechanical/Rotational Elements/DC Motor',[modelName '/ElectricMotor'], 'Position', [150 90 200 140]);

    % Add Vehicle Dynamics block (Integrator for speed)
    add_block('simulink/Commonly Used Blocks/Integrator',[modelName '/VehicleDynamics'], 'Position', [300 90 350 140]);

    % Add Controller block (Gain to control motor torque)
    add_block('simulink/Commonly Used Blocks/Gain',[modelName '/Controller'], 'Position', [150 30 200 70]);
    set_param([modelName '/Controller'], 'Gain', '0.5');

    % Connect blocks
    add_line(modelName, 'Battery/1', 'ElectricMotor/1');
    add_line(modelName, 'ElectricMotor/1', 'VehicleDynamics/1');
    add_line(modelName, 'Controller/1', 'ElectricMotor/2');

    % Save model
    save_system(modelName);
end

createEVModel();

Output

A Simulink model named 'SimpleEVModel' opens with Battery, Electric Motor, Vehicle Dynamics, and Controller blocks connected as described.

Common Pitfalls

Common mistakes when building an electric vehicle model in Simulink include:

• Not connecting physical ports correctly, causing simulation errors.
• Using incompatible units between blocks (e.g., volts vs. amps).
• Forgetting to set solver configuration block for physical modeling.
• Ignoring initial conditions leading to unrealistic simulation results.

Always verify block parameters and connections before running the simulation.

matlab

%% Wrong connection example (physical ports not connected)
% add_line('EV_Model','Battery/1','ElectricMotor/2'); % Incorrect port

%% Correct connection example
% add_line('EV_Model','Battery/1','ElectricMotor/1'); % Correct port

Quick Reference

Tips for building an electric vehicle model in Simulink:

• Use Simscape Electrical blocks for battery and motor components.
• Include a Solver Configuration block for physical network simulation.
• Set consistent units across all blocks.
• Test model incrementally by simulating small parts first.
• Use scopes or data logging to monitor key signals like speed and current.

Key Takeaways

Build the electric vehicle model by connecting Battery, Motor, Vehicle Dynamics, and Controller blocks in Simulink.

Always use physical ports and include a Solver Configuration block for accurate simulation.

Check units and initial conditions to avoid simulation errors.

Test your model step-by-step to ensure each part works before full simulation.