Modeling EV Dynamics Using Simulink — Lesson 4

This lesson covers the fundamentals of vehicle dynamics in electric vehicles, focusing on modeling and simulation using Simulink, a tool within Matlab. The lesson explains how to model the total system of a battery electric vehicle, including the battery, power converter, motor, gear, transmission, and wheels. It also discusses how to model the vehicle dynamics within a battery electric vehicle and how to calculate the torque and angular velocity on the driving axle. The lesson further explains how to represent the resistive forces using ABC constants and how to calculate the torque required on the motor shaft. Towards the end, the lesson demonstrates how to incorporate driving cycle profiles into the mechanical block for calculating range.

Video Highlights

01:16 - Discussion on modeling the total system of a battery electric vehicle
05:24 - Discussion on representing the resistive forces using ABC constants
11:59 - Explanation of vehicle dynamics modeling in a battery electric vehicle using Simulink
19:31 - Discussion on incorporating operation regions (constant torque, power, and speed modes) in the Simulink block
31:32 - Demonstration of how to incorporate driving cycle profiles into the mechanical block for calculating range

Key Takeaways

- Simulink, a tool within Matlab, is widely used for the simulation of dynamic systems, including vehicle dynamics in electric vehicles.
- The total system of a battery electric vehicle consists of the battery, power converter, motor, gear, transmission, and wheels.
- The resistive forces in a vehicle can be represented using ABC constants, which provide a more accurate calculation compared to traditional methods.
- Incorporating driving cycle profiles into the mechanical block can help in calculating the range of an electric vehicle.