Week-3 Challenge: ADVISOR Tool

AIM: Use ADVISOR tool to simulate the following objectives:

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.

INTRODUCTION:

ADVISOR an acronym of NREL’s ADvanced VehIcle SimulatOR, is a set of model, data, and script text files for use with Matlab and Simulink. It is used to conduct rapid analysis of the performance and fuel economy of conventional, electric, and hybrid vehicles. It also provides a 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.

Advantages:

• To estimate the fuel economy
• To understand enery distribution in conventional, hybrid, or electric vehicles
• To optimize the gear ratios in your transmission to minimize fuel use or maximize performance, etc.

METHODOLOGY:

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.

Solution:

open Advisor tool by first dumping the files in the Matlab installation folder.

Command window: Type advisor and enter

Select Metric System

Then follow the below input in the respective windows

Input
drive cycle	CYC_FTP-1	In Simulation parameter window
Mass	500 kg	Vehicle input window
Load file	EV_default_in	Vehicle input window
Drive train	ev	Vehicle input window

Repeat the same procedure by increasing the no. of cycles in simulation window.

Output
S.No.	No. of Drive Cycle	Distance in Km	SOC % remaining
1	1	17.8	60%
2	2	35.5	30%
3	3	41.4	0%

Inference: It is not possible for the EV_default to travel 45 km due to insufficient SOC.

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

Solution:

Input
drive cycle	CYC_FTP-1
Mass	500 kg
Drive train	EV_default_in
Battery Capacity	Variable

Output:

S.No.	No. of Drive Cycle	Battery Modules	Distance in Km	Battery Weight Kg	Voltage V
CASE 1	2	26	35.5	286	321
	2	27	35.5	297	333
	2	28	35.5	308	345
CASE 2	3	26	42.7	286	321
	3	27	44.8	297	333
	3	28	46.3	308	345

Inference:

Drive cycle 2 : Did not show any increase in distance with increase in battery module

Drive cycle 3 : Shows increase in distance with increase in battery module and at 28 modules @ 345Volt it was able to cover the required 45 km distance

3. Perform gradeability test with PRIUS_Jpn_defaults_in file

Compare your results in table and conclude.

Input
Drive train	PRIUS_JPN_default	Vehicle input window
Gradeability test	Select	Simulation parameter window
drive cycle	CYC_FTP-1	Simulation parameter window
No. of Drive cycle	3	Simulation parameter window

Duration 10 sec and speed = 20 miles/hr

Duration 15 sec and speed = 20 miles/hr

Output:

S.No.	Duration sec	Vehicle speed mph	Vehicle speed kmph	Gradeability %
CASE 1	10	20	32.186	19.8
		30	48.279	14.7
		40	64.372	11.7
		45	72.4185	10.7
CASE 2	15	20	32.186	22.1
		30	48.279	16.9
		40	64.372	13.8
		45	72.4185	12.6

Inference: As the speed of vehicle increases the gradeability decreases.

Conclusion: The given objectives were simulated successfully using advisor tool and following conclusions were made:

• It is not possible for the EV_default to travel 45 km due to insufficient SOC @ given input conditions in example 1.
• Drive cycle 2 of example 2: Did not show any increase in distance with increase in battery module
• Drive cycle 3 of example 2: Shows increase in distance with increase in battery module and at 28 modules @ 345Volt it was able to cover the required 45 km distance
• As speed of vehicle increases the gradeability decreases.