Final Project: Electric Rickshaw modelling

Create a detailed MATLAB model of an electric rickshaw (three wheel passenger vehicle) as per details below:

Rear wheels driven by PM brushed type motor

Assume efficiency points of motor controller and motor

Make an excel sheet of all input and assumed data

Results: For any three standard driving cycles show energy consumption, temperature rise of motor and controller for 100 km constant speed driving at 45 kmph.

A)AIM: To Create a detailed MATLAB model of an electric rickshaw (three wheel passenger vehicle) as per details

Objectives:

• Rear wheels driven by PM brushed type motor
• Assume efficiency points of motor controller and motor
• Make an excel sheet of all input and assumed data
• Results: For any three standard driving cycles show energy consumption, temperature rise of motor and controller.

Block Diagram:

In the designed Electric Rickshaw main blocks are Battery, drive cycle, controller, DC Motor, Vehicle body & Transmission system. Drive cycle is the input data like how a human drive his actual vehicle here FTP75,WOT, drive cycles are used to make the designed vehicle to give the output how it reacts to the drive cycle.

There is a SOC block that will estimate the state of charge of a battery, distance is calculated by speed and time parameters for all the three Drive cycles.

Drive train of the Electric Auto Rickshaw

Simulink Model of an Electric Rickshaw:

Initially the current flows to DC Motor from the battery through the DC-DC power converter to drive the motor. The required voltage will be controlled in the controller. The Controller will follow the given drive cycle reference and run the motor in the required rpm. Then the motor power is transmitted to the wheels of a vehicle through the gear box. and the controller will take the vehicle speed and compare and controlled.

Model parameters:

Drive Cycle:

FTP 75:

Wide Open Throttle (WOT):

prepared Drive Cycle:

https://docs.google.com/spreadsheets/d/1RgA-HtOIdcC1QqHIRoNIyYh9d7jtkAJa/edit?usp=sharing&ouid=115205543480963517953&rtpof=true&sd=true

All 3 Drive cycles are controlled by the controller provided above by constant through Multi-port switch.

Motor & Controller:

Battery:

Battery Parameters:

Battery Type	Lithium ion
Nominal Voltage	330V
Rated capacity	75 Ah
Initial SoC%	100
Internal Resistance	0.0012 ohm

Results:

1. For FTP75 Drive Cycle:

By running the Vehicle with FTP75 Drive cycle for 2474 sec. the distance travelled is 19.44km.19.44km.

• The actual Speed is approximately followed the 90% of reference Drive cycle.

2. For WOT Drive cycle:

By running the Vehicle with WOT Drive cycle for 200 sec.

3. For Manually prepared Drive cycle:

To increase the speed of the vehicle, the output voltage amplitude is applied to 400 V

By running the Vehicle with Manually prepared Drive cycle for 120 sec.

Conclusion:

• Here I have compromised with the temperature of Motor and controller to achieve vehicle speed is near to reference speeds. Since I haven’t used any cooling system in the model. In the real time application, the motor temperature is less than 100⁰C.
• In the real time application, the motor, battery & controller temperature is controlled by air cooling. Hence, the temperature of this components is not increased to this extent.
• Hence, Created a MATLAB model of an Electric Rickshaw (three wheel passenger vehicle) by using Li-ion battery, PM Brushed DC Motor.
• Detremined the variations of Temperature of Motor and controller, SoC% and Energy consumed by the by vehicle for all the three Reference Drive cycles