Week-3 Challenge: ADVISOR Tool

ADVISOR Tool

AIM:

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?
2. In the above case, try changing the battery capacity and repeat the simulation.
3. Perform gradeability test with PRIUS_Jpn_defaults_in file.

OBJECTIVES:

Using ADVISOR tool added with MATLAB to simulate different EV/HEV and understand the results from the simulation. We include for each vehicle the model image of vehicle inputs, simulation parameters, and result from those simulations.

ADVISOR tool is a rapid analysis of the performance and fuel economy of EV/HEV. It is used as backward looking facing model. In this we just look up to tables and not based on any model file like in MATLAB model.

PROCEDURE:

1.

First of all we open the vehicle input page in ADVISOR tool and load the EV_defaults_in file, and change the cargo mass to 500 kg keeping all other default conditions.

The calculated mass also changes accordingly.

• On this simulation parameter we just change the drive cycle to CYC_FTP out of a number of different drive cycles.
• As the vehicle in 1 cycle takes 2477 sec to cover distance of 17.77km with 25 modules of battery, where the maximum and average speed are 91.25km/hr, 25.82km/hr respectively.
• According to CYC_FTP plot 43% (approx.) speed of these vehicles remains between 0 to 8 km/hr. It also gains the maximum speed in the initial 500 sec.

• The SOC can be seen from the below result screen as it declines up to 60% (approx.) in 2427 sec. And till this point it also increases many times due to regenerative braking.
• The emission is 0 as it is an EV.

• In this we need at least 3 cycle of this drive cycle with same battery modules(25) to reach near value of 45 km distance which is 41.4 km after 3 cycle.
• The SOC decreases to zero in 5500 sec (approx.) That is why, it shows the warning as the distance exceeds the range of battery.

2

In the above case, we try changing the battery capacity from 25 to 35 modules and repeat the simulation.

In this we run it for 1 cycle where it covers the same distance but due to change in battery modules (35) the SOC is now declines to 70%.

Whereas with 25 modules it goes up to 60% in 1 cycle.

The SOC with 35 modules decreses to zero in 3rd cycle in 7400sec(approx.) where covered distance is 53.2 km.

3.

In this we are Performing gradeability test with PRIUS_Jpn_defaults_in file, which has 40 battery modules.

• In 1 cycle it covers a distance of 11.99km in 1369 sec.
• The speed remains between 36 to 50 km/hr for 17% and between 0 to 8 km/hr for 24%.
• In this we perform the gradeability test.
• Here the grade value is 6% for 55mph speed for 10 sec.
• In this we enable the battery storage during the climbing.

The Gradeability test result for default values are-

• For batter understanding of relationship between Gradeability and speed, We have changed the speed 60,70,75,90(in mph), whish gives the following results by passing the Gradeability test

• At 100 mph it fails the Gradeability test

According to the above result it is clear that the Gradeability decreases with increase in speed.

CONCLUSION:

For an EV/HEV, if we increse the number of battery modules then it also increase the total covered distance.

The increase in gradeability will result in decreasing speed with same time duration.