Architecture and Impacts of Electric Vehicles
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Architecture and impacts of electric vehicles Ioannis Moutafidis SID: 3302100011 SCHOOL OF SCIENCE & TECHNOLOGY A thesis submitted for the degree of Master of Science (MSc) in Energy Systems SEPTEMBER 2011 THESSALONIKI – GREECE -i- Architecture and impacts of electric vehicles Ioannis Moutafidis SID: 3302100011 Supervisor: Dr. Leonidas Ntziachristos Supervising Committee Members: SCHOOL OF SCIENCE & TECHNOLOGY A thesis submitted for the degree of Master of Science (MSc) in Energy Systems SEPTEMBER 2011 THESSALONIKI – GREECE -ii- DISCLAIMER This dissertation is submitted in part candidacy for the degree of Master of Science in Energy Systems, from the School of Science and Technology of the International Hel- lenic University, Thessaloniki, Greece. The views expressed in the dissertation are those of the author entirely and no endorsement of these views is implied by the said University or its staff. This work has not been submitted either in whole or in part, for any other degree at this or any other university. Signed: ............................................... Name: ................................................ Date: ................................................... -iii- Abstract This dissertation was written as a part of the MSc in Energy Systems at the In- ternational Hellenic University. A short summary of the dissertation. This target of this study was to provide a knowledge base for modern electric vehicles. This knowledge base includes components, subsystems, energy management, infrastructure and emissions. Moreover, a basic comparison on the efficiency of three innovating cars of the last year is made. Finally, it pro- vides an outlook for the future development of electric vehicles and their sys- tems. Special thanks are given to my supervisor Dr. Leonidas Ntziachristos for his help during the production and completion of this dissertation. Also I would like to give thanks to Petros Katsis for his assistance in the making of the compari- son chapter. Ioannis Moutafidis 10/10/2011 -iv- Contents DISCLAIMER .................................................................................................... III ABSTRACT ...................................................................................................... IV CONTENTS ....................................................................................................... V 1 INTRODUCTION .......................................................................................... 1 1.1 TRANSPORTATION HISTORY ...................................................................... 1 1.2 FOSSIL FUEL SITUATION ........................................................................... 2 1.3 EMISSIONS ............................................................................................. 4 1.4 ELECTRIC AND HYBRID ELECTRIC CARS ..................................................... 5 1.5 DESCRIPTION OF CHAPTERS ..................................................................... 7 2 HYBRID ELECTRIC VEHICLES SUBSYSTEMS DESCRIPTION ............... 8 2.1 ENERGY STORAGE SYSTEMS ................................................................... 9 2.1.1 Lead-Acid Batteries .................................................................. 10 2.1.2 Nickel-Metal Hydride (NiMH) Batteries..................................... 11 2.1.3 Lithium-Ion Batteries ................................................................ 12 2.1.4 Nickel-Zinc (Ni-Zn) Batteries .................................................... 13 2.1.5 Nickel-Cadmium (Ni-Cd) batteries ........................................... 14 2.1.6 Ultracapacitors ( electric double-layer capacitor) ..................... 15 2.1.7 Fuel cells .................................................................................. 18 2.1.8 Power requirements for batteries in hybrid electric vehicles .... 20 2.2 DRIVETRAIN ARCHITECTURE................................................................... 25 2.2.1 Series hybrid electric vehicles .................................................. 25 2.2.2 Parallel hybrid electric vehicles ................................................ 27 2.2.3 Power-split hybrid electric vehicles .......................................... 29 2.2.4 Choice of the appropriate architecture and other requirements 32 2.3 ENERGY MANAGEMENT ......................................................................... 35 2.4 CHARGING PROFILE .............................................................................. 40 2.4.1 State of the art for ESS charging systems ............................... 40 -v- 2.4.2 Requirements of the energy storage systems charging system design based on PHEV vehicle-level attributes ................................... 43 2.4.3 Constraints on vehicle-level design based on energy storage system charging characteristic attributes ............................................ 43 2.4.4 Constraints on system-level design based on energy storage system charging characteristic attributes ............................................ 44 3 PRESENTATION OF MODELS .................................................................. 45 3.1 CHEVROLET VOLT.................................................................................. 46 3.1.1 Specifications ........................................................................... 47 3.2 NISSAN LEAF ......................................................................................... 55 3.2.1 Specifications ........................................................................... 56 3.3 TOYOTA PRIUS (XW30) ......................................................................... 59 3.3.1 Toyota Hybrid Synergy Drive .................................................... 60 3.3.2 Specifications ........................................................................... 65 4 COMPARISON ........................................................................................... 66 5 IMPACTS AND FUTURE OF ELECTRIC VEHICLES ................................ 72 5.1 EMISSIONS ............................................................................................ 72 5.1.1 Formation of GHG emission from EV fuel cycles ..................... 74 5.2 CHARGING INFRASTRUCTURE ................................................................. 77 5.2.1 Charging modes for conductive charging ................................. 78 5.2.2 Inductive charging .................................................................... 85 5.3 ECONOMY ............................................................................................. 85 5.4 OUTLOOK .............................................................................................. 88 5.4.1 Energy storage devices ............................................................ 89 5.4.2 Electric propulsion motors ........................................................ 92 5.4.3 Power electronics ..................................................................... 92 5.4.4 Other technological challenges ................................................ 94 BIBLIOGRAPHY -REFERENCES ................................................................... 95 -vi- 1 Introduction 1.1 Transportation history Transportation has been a major part of human civilization since the dawn of time and will definitely continue to be one of the cornerstones of human society well into the future. Humans' first means of transport were walking and swim- ming. The domestication of animals introduces a new way to lay the burden of transport on more powerful creatures, allowing heavier loads to be hauled, or humans to ride the animals for higher speed and duration. Inventions such as the wheel and sled helped make animal transport more efficient through the in- troduction of vehicles. Also water transport, including rowed and sailed vessels, dates back to time immemorial, and was the only efficient way to transport large quantities or over large distances prior to the Industrial Revolution. The first forms of road transport were horses, oxen or even humans carrying goods over dirt tracks that often followed game trails. Paved roads were built by many early civilizations, including Mesopotamia and the Indus Valley Civiliza- tion. The Persian and Roman empires built stone-paved roads to allow armies to travel quickly. Deep roadbeds of crushed stone underneath ensured that the roads kept dry. The medieval Caliphate later built tar-paved roads. The first wa- tercraft were canoes cut out from tree trunks. Early water transport was accom- plished with ships that were either rowed or used the wind for propulsion, or a combination of the two. The importance of water has led to most cities, that grew up as sites for trading, being located on rivers or at sea, ofter at the inter- section of two bodies of water. Until the Industrial Revolution, transport re- mained slow and costly, and production and consumption were located as close to each other as feasible. The Industrial Revolution in the 19th century saw a number of inventions fundamentally change transport. With telegraphy, communication became in- stant and independent of transport. The invention of the steam engine, closely followed by its application in rail transport, made land transport independent of -- 1 -- human or animal muscles. Both speed and capacity increased rapidly, allowing specialization through manufacturing being located independent of natural re- sources. The 19th century also saw the development of the steam ship, that sped up global transport. With