Week-3 Challenge: ADVISOR Tool

AIM: To simulate the given data and conditions for an EV using Advisor Tool in MATLAB.

THEORY:

What is ADVISOR TOOL and its benifits;

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.

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?

Answer:

LOAD FILE: EV_defaults_in ; CARGO MASS: 500KG

DRIVE CYCLE: CYC_FTP ; NO. OF CYCLES: 3

CONCLUSION: Thus we can see that for 3 number of cycles at the given conditions,the vehicle can travel for only 41.4km

If we increase the number of cycles,then the vehicle can travel above 45km.

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

Answer:

IN the above simulation we have changed the battery capacity from 25 to 50V.

We can see that, by increasing the battery capacity,the vehicle can travel for more than 53kms in the same number of drive cycles.

similarly,when we decrease the battery capacity , the vehicle travels a lesser distance.

3. Perform gradeability test with PRIUS_Jpn_defaults_in file

Compare your results in table and conclude.

Answer:

SPEED: 50mph

fully electric;

At 50mph,

Gradeability for fully electric,hybrid and IC engine vehicles are 1.7,1.7& nil% resp.

SPEED 20mph:

fully electric;

hybrid;

IC Engine;

At 20mph,

Gradeability for fully electric,hybrid and IC engine vehicles are 19.8,19.8& nil% resp.

COMPARISSION TABLE: