State of Charge (SOC) estimation in Power Electronics - Mini Project: Build & Apply

State of Charge (SOC) Estimation

📖 Scenario: You are working on a simple battery management system for an electric vehicle. To keep track of how much energy is left in the battery, you need to estimate the State of Charge (SOC). SOC is a percentage that shows how full the battery is.In this project, you will create a basic SOC estimation model using simple data and calculations.

🎯 Goal: Build a step-by-step SOC estimation model that calculates the battery's remaining charge percentage based on initial capacity and energy used.

📋 What You'll Learn

Create a variable for the battery's full capacity in ampere-hours (Ah).

Create a variable for the energy used from the battery in ampere-hours (Ah).

Calculate the remaining charge in the battery.

Calculate the State of Charge (SOC) as a percentage.

💡 Why This Matters

🌍 Real World

Estimating the State of Charge helps electric vehicle drivers know how much battery life remains, so they can plan charging stops and trips safely.

💼 Career

Battery management and SOC estimation are key skills for engineers working in electric vehicles, renewable energy storage, and portable electronics.

1

Set up battery capacity and energy used variables

Create a variable called full_capacity and set it to 100 to represent the battery's full capacity in ampere-hours (Ah). Also, create a variable called energy_used and set it to 30 to represent the energy used from the battery in ampere-hours (Ah).

Power Electronics

# Create variables for full capacity and energy used
# Your code here

Need a hint?

Use simple variable assignments like full_capacity = 100 and energy_used = 30.

2

Calculate remaining charge

Create a variable called remaining_charge that calculates the remaining battery charge by subtracting energy_used from full_capacity.

Power Electronics

full_capacity = 100
energy_used = 30
# Calculate remaining charge
# Your code here

Need a hint?

Use subtraction to find the remaining charge: remaining_charge = full_capacity - energy_used.

3

Calculate State of Charge (SOC) as a percentage

Create a variable called soc that calculates the State of Charge as a percentage by dividing remaining_charge by full_capacity and multiplying by 100.

Power Electronics

full_capacity = 100
energy_used = 30
remaining_charge = full_capacity - energy_used
# Calculate SOC percentage
# Your code here

Need a hint?

Calculate SOC as a percentage: soc = (remaining_charge / full_capacity) * 100.

4

Complete SOC estimation model

Add a comment above your code explaining that this model estimates the battery's State of Charge (SOC) based on capacity and energy used.

Power Electronics

# Add a comment explaining the SOC estimation model
full_capacity = 100
energy_used = 30
remaining_charge = full_capacity - energy_used
soc = (remaining_charge / full_capacity) * 100

Need a hint?

Write a simple comment starting with # describing the purpose of the code.