Final Project: Design of an Electric Vehicle

Create a MATLAB model of electric car which uses a battery and a DC motor. Choose suitable blocks from Powertrain block set. Prepare a report about your model including following:

Objectives:

1. System level configurations

2. Model parameters

3. Results

4. Conclusion

Answer:

We know basically there are threee types EVs. They are Battery EV, Hybrid EV and Plugin Hybrid EVs.

• Battery EVs are nothing but completely using battery for Vehicle Run.
• Hybrid EVs will use battery and apart from that any type of source can be used to run the vehicle.
• A plug-in hybrid electric vehicle is a hybrid electric vehicle whose battery pack can be recharged by plugging a charging cable into an external electric power source,
  in addition to internally by its on-board internal combustion engine-powered generator.

Modelling of Electric Vehicle Using MATLAB and Simulink:

The Electric Vehicle Model is modelled by considering Motor, PWM, Longitudinal Driver, Vehicle Body, Tire, Battery and other Required blocks.

Main model:

• From the image above, we can observe that vehicle model is run by giving drive cycle data.
• We will verify that, whether it is following drive cycleor not.

Reference Speed:

• For Providing input, we use Multiport Switch. By giving number (Here Inport Block) to multiport switch, the respective drive cycle or speed data is selected.

Driver Block:

• The parameters are given to Driver block as shwon below.

Configuration of Longitudinal Drive Block:

Converter and Controller Circuit:

• The Acceleration is given to Controlled PWM voltage so that Voltage will controlled and that is givento H-Bridge.
• Similarly the Break Command also given.

Vehicle:

Battery:

State of Charge:

Let us discuss how the parameters were configured of each block:

1. Battery block:

2. Motor:

3. Controlled PWM Voltage block:

4. H-Bridge:

5. Vehicle Body:

6. Tire block:

So all the blocks were modelled as shown above. Now Let us consider simulate by considering refernce speed.

1) If Reference speed is Excel sheet data:

Output:

1. Reference Speed Vs Actual Speed:

2. Vehicle Speed and Distance:

3. %SoC and Current:

Conclusion:

• The Distance travelled by vehicle for given Excelsheet data is nearly 40 Kms.

2) If Reference speed is Drive Cycle data:

1. Reference Speed Vs Actual Speed:

2. Vehicle Speed and Distance:

3. %SoC and Current:

Conclusion:

• The Distance travelled by vehicle for given Excelsheet data is 18.55 Kms.

3) If Reference speed is Signal Builder data:

Signal Builder data is shown as below.

1. Reference Speed Vs Actual Speed:

2. Vehicle Speed and Distance:

3. %SoC and Current:

Conclusion:

• The Distance travelled by vehicle for given Excelsheet data is 18.97 Kms.