System Level Vehicle Model Development of Light Heavy Duty Battery Electric Vehicle in GT-SUITE North American GT-SUITE Conference – 2018 Isuzu Technical Center of America, Inc. Santhosh Pasupathi, Model Based Development Engineer, ITCA Smruti Rathod, Model Based Development Engineering Intern, ITCA
30
Embed
System Level Vehicle Model Development of Light Heavy Duty ... · Santhosh Pasupathi, Model Based Development Engineer, ITCA. Smruti Rathod, Model Based Development Engineering Intern,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
System Level Vehicle Model Development of Light Heavy Duty Battery Electric Vehicle
in GT-SUITE
North American GT-SUITE Conference – 2018
Isuzu Technical Center of America, Inc.
Santhosh Pasupathi, Model Based Development Engineer, ITCASmruti Rathod, Model Based Development Engineering Intern, ITCA
11/15/2018 2
Table of Contents
Introduction
Deliverables
Project Scope
BEV Model Setup in GT-Suite – Architecture, Modifications & Powertrain Specifications
Simulation Results
Conclusion & Next Steps
References & Acknowledgements
1
2
3
4
5
6
7
11/15/2018 3
Introduction
1D – MAP Based Model
Can be built in very short time
Requires less data for validation
Faster than real time
Low fidelity model
This approach can be used for basicperformance and range estimationstudy with less input data fordifferent powertrain architectures
Important applications includebattery and motor componentsizing
1D map based EV model [1]
11/15/2018 4
Build a basic map-based Light Duty BEV model withMaster controller
Strategize control logic to implement:
Regenerative and friction braking combination
Regenerative pedal mapping for different regenmodes
Perform component sizing for motor power
Perform component sizing for battery capacity basedon vehicle architecture
Validate model against field data [GPS data] for rangeestimation and performance evaluation
Deliverables
Predicting Range & Performance
Component Sizing & Optimization[3]
11/15/2018 5
Project Scope
Modeling approach is map based – onlyestimated numbers can be obtained
Battery has been modelled on pack level,not cell level
Battery thermal characteristics areassumed to be constant
Traction/Inverter motor model is nottemperature dependent
Control system and strategy developmentfor individual components is not theprimary focus
1D map based EV model [1]
[Start] [End]
[Energized, not active]
700 V
: Charging : Discharging
[Start]
[End] 700 V
: Charging : Discharging
11/15/2018 6
Mode 1: Key Start
Mode 2: Driving
Mode 3: Regen
EV power flow diagram[1]
Model is setup with three main operating modes of a BEV:
Key start – Power flow starts from 12 V battery whichenergizes motor and auxiliary system
Driving mode – 700 V main battery pack powers theTraction/Inverter motor, that propels the vehicle
Regen mode – Braking energy from vehicle is recoveredas useful energy and stored in main battery pack
EV Model Setup in GT-Suite: Architecture
: Charging : Discharging
[Start]
[End] [End] [End]
700 V
Charging: Battery in charging conditionDischarging: Battery in discharging condition