Week-3 Challenge: ADVISOR Tool

PERFORMANCE OF VEHICLES USING ADVISOR TOOL

AIM :

To perform given tasks like calculating the performance parameters using the matlab extension Advisor tool and execute to plot the results.

ADVISOR TOOL :

ADVISOR, NREL’s ADvanced VehIcle SimulatOR, is a set of model, data, and script text files for use with Matlab and Simulink. It is designed for rapid analysis of the performance and fuel economy of conventional, electric, and hybrid vehicles. ADVISOR also provides a backbone for the detailed simulation and analysis of user defined drivetrain components, a starting point of verified vehicle data and algorithms from which to take full advantage of the modeling flexibility of Simulink and analytic power of MATLAB.

Benefits from using ADVISOR Tool:

• estimate the fuel economy of vehicles that have not yet been built
• learn about how conventional, hybrid, or electric vehicles use (and lose) energy throughout their drivetrains
• compare relative tailpipe emissions produced on a number of cycles
• evaluate an energy management strategy for your hybrid vehicle’s fuel converter
• optimize the gear ratios in your transmission to minimize fuel use or maximize performance, etc.

QUESTION 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.

PROCEDURE :

• First open matlab and then in command window type advisor to open the advisor dispaly window.
• Then in load file load ev_default file and also change the cargo mass to 500kg.
• Then after continuing to the next window select the FTP drive cycle.
• Then now run the program to obtain the results for the given vehicle and the drive cycle.
• The below image shows the performance of the vehicle for above mentioned parameters and remaiming will be as default.

• The first image shows the basic view of electric vehicle modeland below of that motor characteristics plot is present and the selection of the vehicle model here EV default is set and then the cargo mass is set to 500 Kg.
• Then in the 2nd and 3rd image the FTP driving cycle is set as the user defined and the information about the FTP drive cycle is present and also the expected results as per the input parameters is also shown.
• Now to obtain the results the program should be runned for the output plots (or) results.

OUTPUT :

So the result is displayed as plots and results were the total distance covered for 1 FTP cycle for the given inputs is 17.8 Km but as per the question the vehicle cannot reach 45 Km for 1 FTP cycle.

OBSERVATIONS :

1. For one FTP cycle it is travelled upto 17.8 Km but to reach upto 45 Km vehicle should under go 4 FTP cycles, but an error occurs to perform 4 cycles.
2. So for the 4 drive cycles of vehicle the distance covered is 47.9 Km and the SOC is at 0% i.e, for a full charge of vehicle.
3. The SOC(state of charge) at the end of charge is 60% remained were vehicle is runned for 2500 sec.
4. As vehicle is fully electric there is zero emissions.

QUESTION 2 :

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

• So now for the same vehicle model we are going to change the capacity of the battery from 25 to 30 and the remaining parameters of the vehicle will be remained as same.

• The obtained results will be plotted again by repeating the simulation.

OUTPUT :

1. From the output results the distance travelled is 17.8 Km for 2500 sec but with the battery capacity is 30.
2. Here SOC remaining at the end of 1 cycle is about 66% and for the previous case is 60%
3. So by increasing the battery by 5 units we saved about 6% of battery usage according to above mentioned.

QUESTION 3:

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

TAYOTA PRIUS :

• Prius is aLatin word meaning "first", "original", "superior" or "to go before".
• The Toyota Prius is a full hybrid electric vehicle developed and manufactured by Toyota since 1997. Initially offered as a 4-door sedan, it has been produced only as a 5-door fast-back hatch-backsince 2003.
• The Prius is a powersplit series or parallel(full hybrid) sometimes referred to as a combined hybrid, a vehicle that can be propelled by gasoline or electric power or both. Wind resistance is reduced by a drag coefficient of Cd=0.25 (0.29 for 2000 model) with a Kammback design to reduce air resistance.

AIM :

To perform the gradeability test for the toyota prius Ev and tabulate the results.

EXPLAIATION :

1. First after appearing the home page of the advisor select prius in the vehicle and prius_jpn in the type of power train.
2. Then after moving to the next page by clicking continue there we have to tick the gradeability test check box and open the grade options.

3.Keep the grade value as constant and change the speed value to calculate the grade% for different speed values.

4.The below image shows the selection of prius vehicle in the advisor simulation tool.

1. Fuel converter max power = 43 Kw
2. No. of battery modules = 40 of 40 Kg mass using Nickel metal hydrite.
3. Motor rating = 31 Kw and 0.91 peak efficiency.
4. Generator max power = 15 Kw
5. mass of the vehicle = 918 Kg
6. Total mass = 1332 Kg
7. Toyota prius for this specifications is arranged with front wheel drive.

OUTPUT :

After running the simulation on variable speeds with runing time for 10 seconds and the gradeability test results were tabulated below :

1. Test 1:

2. Test 2:

3. Test 3:

4. Test 4:

5. Test 5:

6. Test 6:

7. Test 7:

8. Test 8:

9. Test 9:

10. Test 10:

For the above performed gradeability test the gradeability% will be going on decreasing with the increase in the speed of the vehicle.

CONCLUSION :

• The vehicle cannot travel for 45 km for EV default vehicle, 500 cargo mass for 1 FTP cycle.
• By changing the battery capacity from 25 to 30 modules the distance travelled is same but SOC (state of charge) is 60% in first case and about 66% in 2nd case.
• As vehicle speed increases for about 10 sec time the Gradeability is decreased for the Toyota prius EV_japan model.

GOOGLE DRIVE LINKS :

WEEK 3,1st QUESTION

WEEK 3,2nd QUESTION