Simulating Dynamic Equations in EV — Lesson 1

This lesson covers the simulation of dynamic equations in electric vehicles, focusing on vehicle dynamics when driven by constant tractive effort force (FTE). It explains the derivation of dynamic equations, the calculation of terminal velocity, and the time taken to reach a specific speed. The lesson also discusses the calculation of distance travelled and power with respect to time. It provides an example of a battery electric vehicle given a constant input motor torque, explaining how to estimate the value of tractive effort force and other parameters. The lesson concludes with a discussion on the power flow during motoring operation and generation or braking operation.

Video Highlights

00:41 - Dynamic equations for Constant FTE
04:01 - Average power calculation due to Tractive Effort
05:07 - Battery electric vehicle variables calculation example
07:26 - Estimating tractive effort force and other parameters
22:43 - MATLAB program explanation for Constant FTE dynamic equation simulation
30:02 - Power flow discussion during motoring and braking operations

Key Takeaways

- The dynamic equations of a vehicle driven by constant FTE can be derived and used to calculate terminal velocity and the time taken to reach a specific speed.
- The distance travelled and power with respect to time can also be calculated using these dynamic equations.
- In the case of a battery electric vehicle given a constant input motor torque, the tractive effort force and other parameters can be estimated.
- The power flow during motoring operation and generation or braking operation is different, affecting the torque and power converter.