Project 2

Aim:

To understand energy analysis of EVs on different drive cycles.

In this model an electric bike is used to understand the various energy requirements.

The various blocks used are

Drive cycle:It is used to give referrence drive cycle that is the input.

Tire:

The tire(magic formula) block is used for tire.

Vehicle body:

The vehicle body is used.The weight of the vehicle is given as 120kg.

H-bridge

The h-bridge is used to control the dc motor according to the input signals

Controlled PWM voltage.

This is used to give the control signals to the input of H-bridge

Generic battery:

It is used to provide the power for the dc series motor

Longitudinal driver:

It acts as a driver to give the necessary acceleration and brake commands.

Energy block:

It is a subsystem having the blocks to calculate the energy required

Circuit

Working

A motor bike having 120kg mass is designed.The DC motor is powered from the battery.The necessary acceleration and decceleration command is given by the longitudinal driver according to the reference drive cycle.Its output is given to the pwm generator so as to give the commands to the H-bridge which controls the speed of the motor.The battery soc is also shown.The simulation is run for the FTP75 cycles for 2474 seconds as well as for user defined cycle from excel using spreadsheet block.

Result

The resultant energy for both the cycles are found out and the soc of battery for the cycles are also estimated.

For FTP cycle the energy is 601897J and SOC is 47%.

For user defined cycle energy is 28164J ans SOC is 68%.