IPRO 326: Design and Simulation of a Hybrid-Electric Vehicle

Transcription

1 IPRO 326: Design and Simulation of a Hybrid-Electric Vehicle

2 Outline IPRO Team Structure HEV vs. Traditional ICE Basic Principles of how an HEV works Technical Branch HEV Team Conclusions

3 IPRO 326: Design and Simulation of a Hybrid-Electric Vehicle Administrative Branch Legal Aspects Buisness Aspects Technical Branch Software Simulations Parts Assembly

4 Why Hybrid-Electric Vehicles? Demands for Higher Fuel Economy, Performance and Reliability. Reduced Emissions Cars can go up to 80 MPG. SUV s can go up to 40 MPG.

5 HEV Concept A Series hybrid is an HEV in which only one energy converter can provide propulsion power. A parallel hybrid is an HEV in which more than one energy converter can provide propulsion power

6 The Technical Group ADVISOR software was used for simulating the vehicles Made comprehensive designs for three different vehicles Explored both mild hybrids and full hybrids Explored pros and cons of both configurations

7 ADvanced VehIcle SimulatOR (ADVISOR 3.2)

8 ADVISOR Block Diagram Simulink based Modular Simulation method is a forward backward hybrid

9 Lumina Sierra Silverado Wheelbase (in.) Track Front (in.) Track Rear (in.) Length (in.) Width (in.) Height (in.) Ground Clearance /70R16 245/75R16E 245/75R16 Curb Weight (lbs) (in.) Total Power (hp.) Tires

10 Automotive Electrical Power Systems Ancillary Loads 14V DC Source DC/DC Converter Conventional Cars NewIntroduced Loads 42V DC Source 14V DC System 42V DC System More Electric Cars DC/DC Converter High Voltage (300V or 140V) DC Source High Power Traction Load Hybrid Electric Vehicles Proposed Lightly Hybridized Vehicles

11 Mild HEV Design - Motivations Development of a common power system for traction and other electric loads which greatly simplifies the electric system. Establishment of standard system voltage for manufacturing of hybrid cars. Avoiding expensive and complex high-voltage insulation. Availability of high current high speed switches for system control. Feasibility of efficient low-voltage traction machines.

12 Mild HEV Design Addressing Potential Problems Batteries Series Connection Parallel - Series Connection

13 Mild HEV Design Addressing Potential Problems Electric motor and converter Studies have shown that switched reluctance motors and converters (SRMs) are feasible and efficient at 42 volts Wiring The losses in the electrical distribution system reduce the efficiency of the system. These losses are reduced by using high quality wiring

14 Full HEV Design Finding Optimal HF* Size the Vehicles for different HF using the formula HF = PEM PEM = PEM + PICE Pvehicle = const Edit performance parameters until the vehicle shows uniform performance for all HF dist in 5 sec mpg Constant Parameters * HF - Hybridization Factor 0.1 TOTAL VEH. POWER VEH. PERFORMANCE Parameter Altered HF max speed gradeability Output Parameters MPG

15 HEV Design Control Strategy Maximum Torque Curve Engine Torque E N G I N E O F F Off Torque = Max torque * Off Torque Fraction ENGINE OFF Engine Speed Batteries Charged Maximum Torque Curve Engine Torque Min. Torque = Max torque * Min. Torque Fraction If eng. commanded to perform here, it is shot up to min. torque line Engine Speed Batteries Discharged

16 Car Lumina Simulation Results Type Total Power (kw) HF MPG HI Optimized LO Silverado Optimized HI Optimized Optimized LO Sierra Optimized Optimized Optimized LO Optimized HI

17 Conclusion Even though full hybrids provide a better fuel economy gain, mild hybrids provide a very interesting alternative

18 Welcome to Illinois Institute of Technology Hybrid Electric Vehicle Team Page. The IIT Hybrid Electric Vehicle Team is a group of students and faculty dedicated to producing tomorrows Hybrid Electric Vehicles. With years of experience, vast technological know-how, and a huge task force of students and professors, the IIT HEV Team is ready to move into the future and go hybrid. Want to get involved? Goto the Contact page and the student team leader. IIT HEV Team Project Car: Hybrid Chevy Silverado Interested in sponsoring the IIT Hybrid Electric Vehicle Team? Please goto the Sponsorship page.

19 Mission Statement: As America continues to rely more and more upon cars and trucks for transportation, the looming problems of fuel supply and air pollution become more imminent. The Internal Combustion Engine (ICE) has long been the mechanism that propels our vehicles and gasoline has been its major source of energy. This fuel supply is dwindling and researchers are looking for new sources of energy. An immediate solution to this problem is essential and the most promising answer lies in hybrid electric technology. The hybrid electric technology combines the Silverado Cockpit

20 Current HEV Related Projects: IPRO Simulation and Design of a Lightly Hybridized Vehicle IPRO Conversion of a Car to Electric/Hybrid Power IPRO Design and Testing of a Lithium-Ion Battery System for Electric/Hybrid Vehicle Applications

21 Who are we? HEV Team Structure Simulation and Design Team

22 Student President: HEV Team Divisions Leaders: Srdjan M. Lukic, Student Vice President: Sean P. Shechtman, Webmaster: Sandeep Gangireddy, Secretary: Sahar Kohanim, Modeling and Simulation Leader: Hani Bodakh, Racing Team Division Leader: Mechanical Powertrain Leader: Gary Koo, Darius Dubanski, Electric and Electronic Systems Leader: Fernando Rodriguez, Field Test Leader: Sijie Duo,

23 Competitions Competitors: Cornell University Georgia Tech Penn State University of Maryland Etc

24

25 2002/2003 Sponsorship Proposal: Benefits of Sponsorship: $20,000+ Diamond Sponsor Benefits: Sponsor name and large logo on the vehicle, an on-campus display, team publications, promotion through advertisement at media events and competitions. Permission to exhibit the capabilities of our vehicle. $10,000+ Emerald Sponsor Benefits: Sponsor name and large logo on the vehicle, an on-campus display, team publications, promotion through advertisement at media events and competitions. $5,000+ Sapphire Sponsor Benefits: Sponsor name and logo on the vehicle and on sponsor board shown at competitions and other media events, an on-campus display. $1,000+ Ruby Sponsor Benefits: Sponsor name and logo on the vehicle and on sponsor board shown at competitions and other media events. Under $1,000 Pearl Sponsor Benefits: Sponsor name and logo on sponsor board shown at competitions and other media events.

26 Acknowledgements Advisor: Dr. Ali Emadi Members and Volunteers: Hani Bodakh, Valliy K. Dawood, Victoria Covarrubias, Dariusz Dubanski, Sandeep R. Gangireddy, Brad Kaspar, Sahar Kohanim, Srdjan L. Lukic, Sean P. Shechtman, Ki Bok Song, Sijie Duo, Shigeru Onoda, Gary J. Koo, Scott Burgauer, and Cheol Woo Park. People and Organizations: IIT Society of Automotive Engineers (SAE), and Prof. F. Ruiz Maxwell Technologies, iicp, IPRO 314, IIT Office of General Counsel, IIT IPRO Office, ECE, Mech. Eng., and Chem. Eng. Departments at IIT.