ADVISOR Tool

Q: Use ADVISOR tool and simulate the following.

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.Compare your results in table and conclude.

A. Aim: To simulate models with given repective conditions using ADVISOR tool.

ADVISOR tool: https://sourceforge.net/projects/adv-vehicle-sim/

Theory: ADVISOR means Advanced Vehicle Simulator. ADVISOR is a MATLAB/Simulink based simulation program for rapid analysis of the performance and fuel economy of light and heavy-duty vehicles with conventional (gasoline/diesel), hybrid-electric, full-electric, and fuel cell powertrains.

Opening ADVISOR:

1. Download the tool from the provided link. Extract the files in the MATLAB directory.
   
   
2. Make the current directory as advisor folder for running the tool.
   
   
3. Open the advisor.m file and run the program.
   
   
4. Change the units as metric and start the tool.

A1: Open ADVISOR tool.

1. Open EV_defaults_in file, we can observe all values like energy consumption etc. The total weight is calculated automatically including all components and cargo mass can be varied.
   
   
2. Keep the cargo mass as 500kg, and continue for next process.
   
   
3. By default the drive cycle is UDDS, change it to the FTP cycle. We can observe that the total range of this EV with FTP drive cycle as 17.77km.
   
   
4. To know whether the vehicle travels for 45km, we should calculate for 3 drive cycles.
   
   
5. Run the simulation.

ADVISOR tool:

ADVISOR tool:

EV_defaults_in model:

The distance is given as 17.77km for FTP drive cyce.

Change the number of cycles as 3.

Results: There are 4 plots visible in the results. First plot shows drive cycle for 3 times. Second plot is State of Charge(SOC) which drains completely before the third drive cycle completes. Third plot shows zero emissions occurred. Fourth plot shows that distance covered by the vehicle is 41.4km. The vehicle was unable to make 45km with 500kg cargo mass and FTP drive cycle.

A2: To simulate by changing the battery capacity in the above case.

1. After loading the EV_defaults_in file, change the battery capacity. By default it is given as 25kW, and change it to 35kW.
   
   
2. Continue with the simulation program with 3 FTP drive cycles.
   
   
3. Run the simulation.

Energy storage or battery capacity:

Result: We can observe that the distance has been increased from 41.4 to 53.2km.

A3: To perform gradeability test for PRIUS_jpn_defaults.

1. Load PRIUS_jpn_defaults_in file.
   
   
2. We can obverse vehicle mass as 918kg. Cargo mass as 136kg by default. Power values for energy storage, fuel converter, generator etc are given.
   
   
3. Continue with the process. Check the gradeability test box and click on options.
   
   
4. By default it is given as 55mph with 10seconds durationof time.
   
   
5. Now, run the program and observe various values and plots in results.
   
   
6. We can observe that gradeability at 88.5kmph is 1.7%.
   
   
7. Now, go to before step and change the value of speed as 65mph and run the program.
   
   
8. Continue with the speeds of 75 and 85mph and note the gradeability percentage.

PRIUS_jpn_defaults_in model:

Drive cycle: Taking UDDS drive cycle for one time.

Gradeability test options: At 55mph with 10seconds.

Results: Gradeability at 88.5kmph is 1.7%

Gradeability test options: At 65mph with 10seconds.

Results: Gradeability at 104.6kmph is 1.2%

Gradeability test options: At 75mph with 10seconds.

Results: Gradeability at 120.7kmph is 0.7%

Gradeability test options: At 85mph with 10seconds.

Results: Gradeability at 136.8kmph shows NA. This means the maximum gradeability limit has been reached by the vehicle. For increase of speed the gradeability decreases and vice-versa. This we can observe when the vehicle travels uphill, the speed decreases.

Gradeability test:

Speed	Gradeability
55	1.7
65	1.2
75	0.7
85	Beyond limit

Conclusion:

1. For EV_defaults_in vehicle model with cargo mass of 500kg and FTP drive cycle, it doesn't travel more than 45km. Its range is 41.4km.
   
   
2. By changing the battery capacity from 25kW to 35kW, for the EV_defaults_in vehicle, there is an increase in the range of the vehicle. The distance has been increased to 53.2km.
   
   
3. By testing gradeability at different speeds, when the speed increases gradeability decreases and vice-versa. The maximum gradeability is achieved below 85mph only.