HYBRID ELECTRIC VEHICLE

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G.PULLAIAH COLLEGE OF ENGINEERING AND TECHNOLOGY, KURNOOL.:

G.PULLAIAH COLLEGE OF ENGINEERING AND TECHNOLOGY, KURNOOL. BY : PRASHANTH RAO .S 08AT5A0201. DEPT OF ELECTRICAL AND ELECTRONICS ENGINEERING.

ABSTRACT:

The Emergence of Hybrid Electric Vehicles (HEV): Many automotive companies are working in developing fuel cell powered hybrid electric vehicles (HEV) The computer simulation program “QEVS” EV concept is Hybrid vehicles will significantly reduce transportation related oil demand. The next step for hybrid vehicles will be plug-ins. REVA Electric Car. ABSTRACT

Introduction:

In brief the development of a model of an electric vehicle (EV). Electric vehicles use electric motors and motor controllers instead of internal combustion engines (ICEs). PHEV called as plug-in hybrid electric vehicles. BEVs are usually automobiles, light trucks, neighborhood electric vehicles, motorcycles, motorized bicycles, electric scooters, golf carts, milk floats, forklifts and similar vehicles. Introduction

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Type Specification Availability Fuel Hydrogen gas and Oxygen Easily available or can be prepared. Battery Battery pack of 36 V, 75 Ah. Able to give 40 A for two hours is used as energy source. Easily available Drive mechanism Converter Drive, Control mechanism for efficient conversion Electronic drive mechanism. Motor 3PH 1 HP 230V 2 pole AC 3phase squirrel cage Induction motor

THE FUEL CELL ELECTRIC VEHICLE BLOCK DIAGRAM :

THE FUEL CELL ELECTRIC VEHICLE BLOCK DIAGRAM

Basics of Fuel Cell :

Basics of Fuel Cell

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A Vehicle can that converts Chemical Energy in the Fuel to Electrical Energy and runs on it. A fuel cell provides a DC (direct current) voltage that can be used to power motors , lights or any number of electrical appliances. Fuel cell vehicles are fueled with hydrogen , which is considered an alternative fuel and qualifies for alternative fuel vehicle tax credits . Fuel cell vehicles are still at an early stage of development. Research and development efforts are bringing them closer to commercialization.

ENERGY SAVING FROM ALL WAYS :

In conventional vehicles, energy from deceleration is wasted as it dissipates. Some hybrids also use ultra capacitors to extend the life of a hybrid vehicle's on-board battery system . The most common type of fuel cell for vehicle applications is the polymer electrolyte membrane (PEM) fuel cell. Fuel cell vehicles can be fueled with pure hydrogen gas stored directly on the vehicle or extracted from a secondary fuel—such as methanol, ethanol, or natural gas—that carries hydrogen. ENERGY SAVING FROM ALL WAYS

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Fuel cell vehicles fueled with pure hydrogen emit no pollutants, only water and heat. Vehicles that use secondary fuels and a reformer produce only small amounts of air pollutants. Fuel cell vehicles can be equipped with other advanced technologies to increase efficiency, such as regenerative braking systems. The energy lost during braking and store it in a large battery. Present-day hybrids are equipped with ICEs and electric motors.

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PARALLEL DESIGN: The primary engine is used for highway driving; the electric motor provides added power during hill climbs, acceleration, and other periods of high demand. SERIES DESIGN: In this the primary engine is connected to a generator that produces electricity. The electricity charges the batteries, which drive an electric motor that powers the wheels. Power is transferred from chemical energy to mechanical energy to electrical energy, and back to mechanical energy to drive the wheels.

Benefits of a series configuration:

The engine never idles, which reduces vehicle emissions. The engine can continuously operate in its most efficient region. The engine drives a generator to run at optimum performance. The design allows for a variety of options when mounting the engine and vehicle components. Benefits of a series configuration

Production of the FUEL (Hydrogen):

The simplest element and most plentiful gas in the universe and it is colorless, odorless and tasteless. Hydrogen is the lightest element, with a density of 0.08988 grams per liter at standard pressure It has three times the energy of a pound of gasoline. It is safe to manufacture. Production of the FUEL (Hydrogen)

OPERATION OF EHV WITH POWER ELECTRONICS INTERFACE:

OPERATION OF EHV WITH POWER ELECTRONICS INTERFACE

Conversion of the available DC source to 3 phase AC supply :

Conversion of the available DC source to 3 phase AC supply

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The conversion Chemistry behind the working of this process is totally based on the Power Electronic Interface till the delivery of load takes place. The system is driven totally under control drive mechanism using the in board Electronics. A battery is used to store the energy which is generated from the fuel cells.

SALIENT FEATURES:

STRESS ON THE DEVICES IS REDUCED. MINIMUM NUMBERS OF COMPONENTS ARE USED COMPARED TO OTHER CIRCUITS. AT 36 VOLTS, DURING STARTING, SUFFICIENT AMOUNT OF TORQUE IS DEVELOPED SALIENT FEATURES

MAJOR ADVANTAGES OF THIS SYSTEM :

The whole process is Clean, right from the source till the end The transportation system is no more dependent on exhaustible sources Provides spinning reserve for the power system Renewable energy is highly unreliable, but hydrogen storage increases the reliability of this system MAJOR ADVANTAGES OF THIS SYSTEM

SPECIFICATIONS OF WORKING MODEL:

Location: Inside the Honda R&D Americas Los Angeles research center Structural system: Solar battery / electric converter / electrolyzing system / compressor / pressurized hydrogen tank. Hydrogen production capacity: Used alongside commercial electric power Max. 2Nm 3 /h Solar power only Max 2Nm 3 /h Hydrogen storage capacity: 400 liters (350 air pressure) SPECIFICATIONS OF WORKING MODEL

CONCLUSION:

Electric vehicles powered by Renewable Energy sources has the potential to make Clean Sustainable Efficient transportation system Using hydrogen as fuel 30% reduction in green house emissions relative to current year vehicles. No increase in toxic pollutants. No increase in smog forming emissions CONCLUSION

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QUERIES

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Thank you...

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