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presentation

1. 08/21/24 1
Why Electric Vehicles?
• Increasing automobiles
• Declining oil reserves
• Increasing greenhouse emissions
• Global warming, Govt. regulations
Solution: improve the existing power system efficiency,
alternate fuels, new materials or alternate power systems
like electric vehicles
First solution may not solve the problem in long run. So, look
for the other three.

2. 08/21/24 2
Electric Vehicle concept
•EV is a road vehicle based on modern electric propulsion
consisting of electric machines, power electronic
converters, electric energy sources and storage devices,
and electronic controllers;
•Regenerative breaking is possible in EVs;
•More advancements are to be done to make them
affordable.

3. 08/21/24 3
EV Mechanical compostion
Three major components and interconnections
Electric Propulsion system: generates the necessary power to the wheels.
Includes transmission and energy management system.
Energy source: consists of energy sources like fossil fuel, battery or fuel
cells. Generates or recieves energy
Auxiliary power system : supplies power to auxiliaries like A.C, fan,
lightning system etc.
propulsion
system
energy
source
auxiliary
power
wheels

4. 08/21/24 4

5. 08/21/24 5
Comparison of BEV, HEV, and FCEV
•High fuel cell cost
•Lack of infrastructure
•Dependence on Fossil
fuel
•complex
•Limitations of battery
•Short range (100-200km)
•Charging facilities
Major issues
•Zero emission Independence
on fossil oil
•High energy efficiency
•Under development (future
trend)
•Low emission
•Higher fuel economy
•Commercially available
•Zero emission
•Independence on fossil oil
•Commercially available
Characteristics
•Hydrogen
•Methanol or gasoline
•ethanol
•Gasoline stations
•Electric grid charging
facilities (optional for
plug-in hybrid)
•Electric grid charging
facilities
Energy source and
infrastructure
•Fuel cells•Battery
•Ultracapacitor
•ICE generating unit
•Battery
•ultracapacitor
Energy system
•Electric motor drives•Electric motor drives
•ICE
•Electric motor drivesPropulsion
HEVBEVTypes of EVs