Regenerative braking energy recovery in Power Electronics - Mini Project: Build & Apply

Regenerative Braking Energy Recovery

📖 Scenario: You are designing a simple model to understand how regenerative braking recovers energy in electric vehicles. This model will help you see how energy is stored during braking and reused later.

🎯 Goal: Build a step-by-step model that shows how energy is captured during braking and stored in a battery, using simple variables and calculations.

📋 What You'll Learn

Create variables to represent initial kinetic energy and braking efficiency

Add a variable for energy recovered during braking

Calculate the energy stored in the battery after braking

Include a final step to show total usable energy after recovery

💡 Why This Matters

🌍 Real World

Regenerative braking helps electric and hybrid vehicles save energy by converting motion into electrical energy during braking.

💼 Career

Understanding energy recovery is important for engineers designing efficient electric vehicle systems and improving battery management.

1

Set up initial kinetic energy and braking efficiency

Create two variables: kinetic_energy with value 5000 (representing energy in joules) and braking_efficiency with value 0.7 (representing 70% efficiency).

Power Electronics

# Create variables kinetic_energy and braking_efficiency with given values
# Your code here

Need a hint?

Think of kinetic_energy as the energy the vehicle has before braking, and braking_efficiency as how well the system recovers energy.

2

Calculate energy recovered during braking

Create a variable called energy_recovered that calculates the product of kinetic_energy and braking_efficiency.

Power Electronics

kinetic_energy = 5000
braking_efficiency = 0.7
# Calculate energy_recovered as kinetic_energy times braking_efficiency
# Your code here

Need a hint?

Multiply the total kinetic energy by the efficiency to find how much energy is saved.

3

Calculate energy stored in the battery

Create a variable called energy_stored that equals energy_recovered minus a fixed loss of 200 joules (representing energy lost during storage).

Power Electronics

kinetic_energy = 5000
braking_efficiency = 0.7
energy_recovered = kinetic_energy * braking_efficiency
# Calculate energy_stored by subtracting 200 from energy_recovered
# Your code here

Need a hint?

Subtract the energy lost during storage from the recovered energy to find what is actually stored.

4

Calculate total usable energy after recovery

Create a variable called total_usable_energy that adds energy_stored to 1000 joules (representing energy already in the battery).

Power Electronics

kinetic_energy = 5000
braking_efficiency = 0.7
energy_recovered = kinetic_energy * braking_efficiency
energy_stored = energy_recovered - 200
# Calculate total_usable_energy by adding 1000 to energy_stored
# Your code here

Need a hint?

Add the stored energy to the existing battery energy to find total energy available for use.