Week-3 Challenge: ADVISOR Tool

Aim:

      To use the ADVISOR tool for simulation

Objective:

• Using 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 and also Conclude the observations.
• In the above case, try changing the battery capacity and repeat the simulation.
• To Perform gradeability test with PRIUS_Jpn_defaults_in file.To Compare your results in table and conclude. 

ADVISOR:

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.

You may benefit from using ADVISOR if you want to:

• 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.

The models in ADVISOR are:

• mostly empirical, relying on drivetrain component input/output relationships measured in the laboratory, and
• quasi-static, using data collected in steady state (for example, constant torque and speed) tests and correcting them for transient effects such as the rotational inertia of drivetrain components.

ADVISOR was preliminarily written and used in November 1994.  Since then, it has been modified as necessary to help manage the US DOE Hybrid Vehicle Propulsion System subcontracts.  Only in January 1998 was a concerted development effort undertaken to clean up and document ADVISOR.

Since then, over 4500 individuals have downloaded one or more versions of ADVISOR, including all of the OEMs and major suppliers.  About 2/3 of the users are from industry and 1/3 from universities.  A short list of major ADVISOR users includes:

• DaimlerChrysler
• Ford Motor Company
• General Motors Corp.
• Delphi Automotive Systems
• Visteon
• and hundreds of others

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.

First, loading EV_defaults_in from the drop_down menu and changing Parallel_default_in to EV_defaults_in from Vehicle Input window.

• Now changing the cargo mass to 500Kg
• Change in the total mass of the Vehicle can be seen.
• Clicking on the continue button after that a new window simulation parameter will pop up.

In Simulation Parameter window change drive cycle to CYC_FTP by selecting the drop-down menu

Below that we will see different cycles from there we can set our drive cycle.

Increasing number of drive cycles to 1

After Pressing the RUN button, the simulation will start and it will show results in a new window.

Results with one drive cycles.

The distance travelled by the Vehicle in 1 drive cycle is 17.8Km. Used almost 40% SOC.

Increasing number of drive cycles to 2

Results with two drive cycles.

The distance travelled by the vehicle in 2 drive cycles is 35.5 miles. Used almost 81% SOC

Increasing number of drive cycles to 3

Results with three drive cycles.

The distance travelled by the vehicle in 3 drive cycles is 41.4Km. Used almost 100% SOC.

Yes, the vehicle travel for 45 km with FTP drive cycle. The Minimum distance travel by car is 17.8Km with drive cycle CYC_FTP-1, Whereas the maximum distance travel by car is 48.2Km which consumes 100% of battery within in 3 cycle upto 5500 sec

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

• In Vehicle input window we will change the capacity of battery form energy storage which will be open in 1st.
• The battery capacity, so we will change the module number of batteries from the first box and we will see that changes in Voltage and Weight of the battery.

• A new Simulation Parameter window will open, here we will change the drive cycle to 2 or 3, one at the time and run the Simulation.
• After completing of simulation, we will see the result window where we observe the change in distance of vehicle travel.
• We can repeat this simulation by changing the battery module and the drive cycle.

Energy Storage System with 26 modules and 2 drive cycles:

Result:

Energy Storage System with 27 modules and 2 drive cycles:

Result:

Energy Storage System with 28 modules and 2 drive cycles:

Result:

Drive cycle-2:

Energy Storage System with 26 modules and 3 drive cycles:

Result:

Energy Storage System with 27 modules and 3 drive cycles:

Result:

Energy Storage System with 28 modules and 3 drive cycles:

Result:

Drive Cycle-3

• Battery modules 28 with 3 drive cycle, the distance travelled is 46.3Km
• While changing the battery module in drive cycle 2 we get constant distance travel.
• Changing the battery module in drive cycle 3 we get changes in distance travel by Vehicle.
• To cover 45Km distance a 28 module 345 volt battery is required.

3. Perform gradeability test with PRIUS_Jpn_defaults_in file. Compare your results in 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, I 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 and a result window will open showing different results depend upon input data.

Result for the duration-10sec:

Speed-20miles/h or 32.2Kmph

Gradeability=19.8%

Speed-25miles/h or 40.2Kmph

Gradeability=16.5%

Speed-30miles/h or 48.3Kmph

Gradeability=14.7%

Speed-35miles/h or 56.3Kmph

Gradeability=13%

Speed-40miles/h or 64.4Kmph

Gradeability=11.7%

Speed-45miles/h or 72.4Kmph

Gradeability=10.7%

For Duration - 10sec

Result for the duration-20sec

Speed-20miles/h or 32.2Kmph

Gradeability=22.9%

Speed-25miles/h or 40.2Kmph

Gradeability=19.7%

Speed-30miles/h or 48.3Kmph

Gradeability=17.7%

Speed-35miles/h or 56.3Kmph

Gradeability=16%

Speed-40miles/h or 64.4Kmph

Gradeability=14.6%

Speed-45miles/h or 72.4Kmph

Gradeability=13.4%

For Duration - 20 sec

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

Conclusion:

               By using the ADVISOR tool for simulation we can Solve the above question.