Analysis of Emission and Fuel Economy in a Plug in Hybrid Vehicle Using Various Control Strategies

Abstract

Plug-in hybrid electric vehicles (PHEVs) differ from hybrid vehicles (HEVs) with their capability to
use off-board electricity generation to recharge their battery. Electric vehicles are highly emerging
for transportation purpose, which have been developed over the past several decades due to various
environmental concerns. Pure electric vehicles currently do not have adequate range when powered
by batteries alone and also recharging of it requires several hours. The shortcoming raised with the
standalone energy source powered electric vehicle made to think about an alternative option for an
electric vehicle and motivated towards the hybridization of energy sources in electric vehicle. This
paper analyzes the equivalent power circuit and operation principles of a PHEV using UDDS and
NEDC driving pattern. Regenerative braking also provides an effective way of extending the driving
range of battery powered electric vehicles. Conventional automobiles use Internal Combustion
Engines (ICEs) to operate with the energy source from fossil fuels. However, the conventional vehicle
system provides limited fuel economy, as well as producing harmful air pollutants. A Plug-in Hybrid
Electric Vehicle (PHEV) has been introduced which operates within its all electric range. Which have
high capacity of energy storage system. PHEVs used to charge the battery from electricity grid, which
differs from the traditional Hybrid Electric Vehicles (HEVs). The plug in hybrid electric vehicle is
instigated for enhancing the vehicle performance by improving the fuel economy, effectively capturing
the regenerative braking energy by controlling the Battery State of Charge (SoC) level within the
optimal upper and lower bound that would improve the battery life, eliminating the fuel starvation
problem and maximizing the drivability of the vehicle through an optimized distribution of the
required power to the load. The proposed work is focused on designing a gasoline based Hybrid
Electric Vehicle includes the modelling of hybrid energy sources and other interfacing structures.