Possibilities of energy recovery in electric vehicles using ultracapacitors

• Autorzy: Juda Z.
• Języki publikacji: EN

Abstrakty

EN

The concept of double secondary energy source with batteries and ultracapacitors (UCAP’s) for golf cart based small size electric vehicle is presented in the paper. For short distance (neighbourhood) person transport in cultural, historical and natural heritage location such as places of tourist interest electrically driven vehicles, equipped with advanced energy storage and management devices could be used. The achievement of higher efficiency of energy conversion and energy exchange between different kinds of secondary energy sources is a very important way of hybrid and electric propulsion systems development. Each vehicle in order to move must produce tractive power on its wheels to counteract against the aerodynamic drag force, rolling resistance force and gravity forces during ascent. Moreover, during accelerating the vehicle must overcome inertia forces. Most of energy delivered to the system during accelerating is consequently lost irrecoverably during braking. Wherever the tractive power is produced by electric machines (in cases of FC vehicles, HEVs as well as EV), energy losses during braking can be reduced due to effective regeneration. Capabilities of secondary energy sources to store energy depend on important vehicle parameters: maximum range, grade ability and acceleration ability. These parameters affect life cycles of traditional secondary energy sources (electrochemical batteries). Use of UCAP’s enables improvement of battery life cycle and simultaneously a decrease in electric (EV) or hybrid electric vehicles (HEV) exploitation costs. The stack of UCAP’s is an ideal energy store for braking energy recuperation because of possibility to receive large portion of energy in short time without decreasing the operate parameters. Too high current in short time causes shortening of battery life cycle. The microcomputer controllers and power electronics devices are necessary for a proper battery and stack of UCAP’s cooperation and energy exchange management.

Słowa kluczowe

EN

ultracapacitor; energy recovery; DC/DC boost-buck converter; battery; energy source

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2006
• Tom: Vol. 13, No. 2
• Strony: 187--195
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Juda Z.

• Technical University of Krakow Automotive Mechatronics Laboratory Jana Pawla II 37, PL 31-864 Krakow, Poland tel.[phone], fax: [phone],

Bibliografia

• [1] Eshani, M., Gao, Y., Gay, S., E., Emadi, A., Modern Electric, Hybrid Electric, and Fuel Cell Vehicles/ Fundamentals, Theory, and Design, CRC Press, 2005.
• [2] Chan, C.C., Chau, K.T., Modern Electric Vehicle Technology,Oxford University Press, 2001.
• [3] Juda, Z., Ultracapacitors as an advanced energy source for braking energy recovery in electric vehicles, International School-Seminar: Renewable Energy Sources for Sustainable Development of Historical Cities, UNESCO – Krakow Technical University, Krakow, 17-20 May, 2006.
• [4] Maxwell Technologies, Application Note, How To Determine The Appriopriate Size Ultracapacitor For Your Application.
• [5] Juda, Z., Braking energy recovery in hybrid electric vehicles using supercapacitors, Paper PTNSS P05-C044, Bielsko-Bia􀃡a- Szczyrk, 2005.
• [6] Szumanowski, A., Fundamentals of Hybrid Vehicle Drives, Wydawnictwo Warsaw-Radom, ISBN 83-7204-114-8, Radom 2000.
• [7] Husain, I., Electric and Hybrid Vehicles Design Fundamentals, CRC Press, 2003.
• [8] Si􀃡ka, W., Energoch􀃡onno􀄞􀃼 ruchu samochodu, WNT Warszawa, 1997, ISBN 83-204-2037-7.
• [9] Juda, Z., Simulation of Energy Conversion in Advanced Automotive Vehicles, SAE Paper 2001-01-3341, ATTCE Congress Barcelona 2001.
• [10] Miller, J.M., Smith, R., Ultracapacitor Assisted Electric Drives for Transportation, Maxwell Technologies