Presented By
ARUNKUMAR N

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CONCEPTUAL DESIGN OF HEV AND IMPLEMENTATION OF CONTROLLER
INTRODUCTION
 A vehicle that has two or more energy sources and energy converters is called a hybrid vehicle.
 A hybrid vehicle with an electrical power train (energy source energy converter) is called an Hybrid Electric Vehicle(HEV).
 A hybrid vehicle drive train usually consists of no more than two power trains. More than two power train configuration will complicate the system.
CONCEPTUAL ILLUSTRATION OF A HYBRID ELECTRIC DRIVE TRAIN
Power train (1) is unidirectional and Power train (2) is bidirectional.
ARCHITECTURES OF HYBRID ELECTRIC DRIVE TRAINS
The architecture of a hybrid vehicle is usually defined as the connection between the components of the vehicle traction, and then the energy flow path. The major architectures are:
 Series hybrid electric drive trains
 Parallel hybrid electric drive trains
 Series-parallel electric drive trains
SERIES HYBRID DRIVE TRAIN:
 Two power sources feed a single power plant (electric motor) that propels the vehicle.
 The traction power is delivered by the electric motor, while the ICE, via a generator, produces electric power to drive the electric motor.
 The excess power is then stored in the battery pack.
 The ICE is decoupled from the driven wheels and can be operated mostly in the maximum efficiency region.
 As the energy from the ICE is converter twice before to drive the wheels, the system is more expensive than the parallel one.
PARALLEL HYBRID DRIVE TRAIN:
 In a parallel hybrid drive train, the engine and electric motor can directly supply their torque to the driven wheels through a mechanical coupling.
 There is direct mechanical connection between the hybrid power unit and the wheels.
 In addition, this layout has an electric traction motor that drives the wheels, and can recuperate a share of the braking energy, in order to charge the batteries (regenerative braking) or help the ICE during the acceleration conditions.
 There are several configurations depending on the structure of the mechanical combination between the ICE and the electrical motor.
SERIES-PARALLEL HYBRID DRIVE TRAIN:
 The series layout and the parallel layout are merged together in order to have both advantages.
 In particular the ICE is able to supply the electrical motor or charge the battery through a generator.
 However, it also needs an additional electric machine and a planetary unit, which makes the drive train somewhat complicated.
MODE OF OPERATION:
PROBLEM DEFINITION
 Conceptual design of Hybrid Electric Vehicle (HEV) and design of controller for efficient fuel consumption.
OBJECTIVES
 To design the series-parallel model of HEV.
 Controller design.
 Comparison with non-HEV.
FEASIBILITY ANALYSIS
 Dymola
 Matlab/Simulink(State flow)
PROPOSED METHOD
TIMELINE OF ACTIVITIES
 To design HEV using Dymola (end of January).
 To design controller in Matlab/simulink (state flow) and to interface HEV model in Dymola with Matlab and to check the functionality of controller (end of February).
 To compare the results of non-HEV with HEV and analyze the result (end of March).