ADVISOR TOOL:-

AIM:-

Using ADVISOR tool and simulating 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 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.

ADVISOR(Advance Vehicle Simulator)

• It 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.

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.

Enery storage : Lead Acid battery with 25 modules having 308 V as nominal voltage with 0.92 motor efficiency.

Motor : AC induction motor with 75kW

Transmission : Manual

Drive : Front wheel drive

Cargo Mass : 500kg

• Input the drive cycle called CYC_FTP which is 17.77 km long in distance.

• In the above figure, first plot shows the drive cycle for which vehicle has travelled.
• The second plot shows th SOC fall with time.

Hence, after running the simulation, we can see that, the SOC becomes zero after aproximately 2.5 drive cycles. As shown at the right hand side, the distance travelled by vehicle is 41.4 km. Hence the vehicle cannot travel 45km in a single charge.

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

In this case the same default conditions are taken that are intiate in question 1 and battery capacity will changed for accelerating the vehicle that will increase the vehicle distance travel km.

-Increasing the battery capacity of vehicle

So, inorder to achieve a range of 45 km, 5 more modules of batteries have been added making the total modules to 30 and nominal voltage to 370 V.

In the above image, the vehcile travels a distance of 49.3 km. Hence 30 number of battery modules are sufficient to satisfy a range of 45km according the problem description.

3. Perform GRADEABILITY test with PRIUS_JPN_DEFAULTS_IN file compare your results in table and conclude:

Vehicle Specifications :

Power produced by IC engine : 43kW with fuel convertor efficiency of 0.39

Battery Capacity : NMH(Nickel Metal Hydride) batteries have been used with 40 modules producing a nominal voltage of 308 V

Generator(Regenerative) : 15kW

Motor :Induction motor producing power of 15kW with 0.84 efficiency.

Transmission : PGCVT

Drive : Front wheel drive

Inorder to perform the gradeability test. We keep the grade value constant and change the speed values to find out the maximum gradeability at an optimum speed simulating for 10s.

Hence the simulation is run with for gradeability test.

Following are the output results :
Case 1 : Speed = 30mph

Gradeability = 14.7 %

Case 2:- Speed = 50 mph

Gradeability = 9.7 %

Hence, speeds of 50mph to 9.7mph gives highest gradeability value which makes them the optimum speeds for Prius.