Hybrid Electric Vehicle: ADVISOR Tool

OBJECTIVE

Use ADVISOR tool and simulate the followings :

1. For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations.

2. In the above case, try changing the battery capacity and repeat the simulation.

3. Perform gradeability test with PRIUS_Jpn_defaults_in file to compare your results in table and conclude.

SOLUTIONS

What is an advisor tool ?

• Advisor tool is a model written in the widely used MATLAB/Simulink software environment.
• This tool stands for 'Advanced Vehicle Simulator' which is used to model different types of vehicles such as ICE, EV, HEV and other Fuel cell-based vehicles.
• This is very useful in case of user-defined powertrain or vehicle dynamics and wants to see the following results before the implementation of the model.

1. For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations.

- Load the ADVISOR TOOL from the matlab command window and select metric system, and load EV_default_in file and change the cargo weight to 500kg, while keeping the remaining variables same and hit 'continue' to load the drive cycle page.

- We need to use FTP based cycle. So, we select the following and hit 'run' for the next window.

- We need total distance covered to be 45 kilometers, but this drive cycle can only complete 17.8 so we need more than 1 drive cycle to complete more than 45 kilometers. so we can use 3 drive cycles.

- But instead of 3 cycles, we are able to utilise 2 cycles and next, we notice a warning in red which means that the distance is more than the range of the current battery pack so the vehicle can not travel 45 kilometers but will be short by 3.2 kilometers.

CONCLUSION

The minimum distance travel by car is 17.8 km with drive cycle CYC_FTP – 1, whereas the maximum distance travel by car is 41.4km which consumes 100% of battery in 3 Drive cycles.Therefore EV_default cannot travel distance of 45 km due to insufficient SOC.

2. In the above case, try changing the battery capacity and repeat the simulation.

Battery type - PB and Battery model- ESS_PB25

RESULT:

CONCLUSION:

With battery modules of 28 Units and 3 drive cycles, the distance traveled is 46.3km. And to cover 45km distance a module of 28 units having rating of 345-volt battery is required.

3. Perform gradeability test with PRIUS_Jpn_defaults_in file. Compare your results in the table and conclude.

- In ADVISOR tool Vehicle Input window select PRIUS_Jpn_default model.

- Continue to the next window.Simulation Parameter window will open.

- Select the gradeability test and click on the grade Option box, a new dialogue box will open.

- In grade option box we can change speed or duration with respect to our simulation.

- So, for this simulation, change speed one time and duration another time.

- Click on All system enabled.

- Also, click on constant road grade.

- Click Ok and run the simulation.

- Result window will open showing different results depend upon input data.

RESULT:

SL. NO.	Speed (mph)	Speed(Kmph)	Gradability (%)
1	20	32.2	22.9
2	25	40.2	19.7
3	30	48.3	17.7
4	35	56.3	16.0
5	40	64.4	14.6
6	45	72.4	13.4

From the table above, it can be seen that when vehicle speed increases there is a decrease in gradeability for both 10sec and 20sec duration.

CONCLUSION

when vehicle speed increases there is a decrease in gradeability.