3. ABSTRACT
In recent years, there has been a lot of focus on the rise in demand for renewable energy sources.
The electric vehicle (EV) is a key area for meeting this demand.
However, the lengthier charging time is one of the primary roadblocks to EV adoption.
As a result, there is a clear need for EV charging times to be shortened. Electric vehicle (EV) charging at a
constant current can assist in resolving this issue.
As a result, the DC-DC converter plays a crucial role. DC-DC converters are widely used in electrical
equipment like cell phones and laptops.
The prospect of grid-connected constant current charging of electric vehicles using a buck DC-DC
converter and an ANFIS controller is discussed in this research.
ANFIS is simple to set up and does not necessitate extensive mathematical modelling.
The entire model of the system under consideration was developed in MATLAB/Simulink. The simulation
results suggest that the proposed strategy is viable and capable.
4. Literature review
• M. Tesanovic and S. Vadgama, prposes a novel pollution-aware approach for intelligent
switching between electric and conventional propulsion in hybrid electric vehicles
(HEVs). The switching is based on pollution information and pollution control zones
location and size, combined with travel route and destination information, estimated
travel distance on current charge level of battery and, in certain instances, with traffic
congestion information, thereby enabling the journey to be completed such that adequate
battery charge is available to transit all relevant pollution control zones in Smart Cities of
the future. Additionally we outline a method for inferring the mode (specific
combination of power or fuel sources) an HEV is running in, using roadside thermal
cameras, enabling efficient enforcement of low-emission zones in future Smart Cities.
5. Cont.…
• P. Goli and W. Shireen, Present the proliferation in the number of PHEVs the demand on
the electric grid increases appreciably. A smart charging station is proposed in which the
charging of the PHEVs is controlled in such a way that the impact of charging during peak
load period is not felt on the grid. The power needed to charge the plug in hybrids comes
from grid-connected photovoltaic (PV) generation or the utility or both. The three way
interaction between the PV, PHEVs and the grid ensures optimal usage of available power,
charging time and grid stability. The system designed to achieve the desired objective
consists of a photovoltaic system, DC/DC boost converter, DC/AC bi-directional converter
and DC/DC buck converter. The output of DC/DC boost converter and input of DC/AC bi-
directional converter share a common DC link. A unique control strategy based on DC link
voltage sensing is proposed for the above system for efficient transfer of energy.
6. Cont.…
• R. Shi, S. Semsar, and P. W. Lehn, Existing integrated chargers are configured to charge
from single- or three-phase ac networks. With the rapid emergence of dc grids, there is
growing interest in the development of high-efficiency low-cost integrated chargers interfaced
with dc power outlets. This paper introduces a new integrated charger offering electric vehicle
fast charging from emerging dc distribution networks. In absence of a dc grid, the charger can
alternatively be fed from a simple uncontrolled rectifier. The proposed charger leverages the
dual-inverter topology previously developed for high-speed drive applications. By connecting
the charger inlet to the differential ends of the traction inverters, charging is enabled for a
wide battery voltage range previously unattainable using an integrated charger based on the
single traction drive. An 11-kW experimental setup demonstrates rapid charging using
constant current control and energy balancing of dual storage media. To minimize the
harmonic impact of the charger on the dc distribution network, a combination of
complementary and interleaved switching methods is demonstrated.
7. Cont.…
• L. Tan, B. Wu, S. Rivera, and V. Yaramasu, With the increasing popularity of electric vehicles,
there is an urgent demand to shorten the charging time, so the development of high-power charging
stations with fast chargers is necessary to alleviate range anxiety for drivers. The charging station
based on the neutral-point-clamped (NPC) converter can bring many merits, but it has unbalanced
power problems in the bipolar dc bus. To solve this issue, comprehensive dc power balance
management (PBM) in conjunction with high-power three-level dc-dc converter based fast charger is
proposed in this paper. The active dc power balance management (APBM) is proposed to assist the
central NPC converter in balancing power so that the additional balancing circuit is eliminated; while
the passive dc power balance management (PPBM) is proposed to eliminate the fluctuating neutral-
point currents and to ensure the balanced operation of fast chargers. The principles of APBM and
PPBM are researched, the efficient integration between them is studied, and the overall control
scheme for the fast charger is proposed. The power balance limits of APBM are explored, while the
circulating currents of PPBM are analyzed. Simulation and experimental results are presented to
8. Existing METHOD
The possibility of grid connected constant current charging of EV
with buck DC-DC converter through fuzzy logic control (FLC).
9. Drawbacks
• Increase charging time more in EV’s.
• No fine controlling.
• Leads to instability of the system.
• Due to more time of charging the battery gets heated.
11. Proposed METHOD
The possibility of grid connected constant current charging of EV
with buck DC-DC converter through ANFIS controller
12. Advantages…
Reduces charging time in EV’s.
Easy to implement.
It is also highly reliable and robust to change in circuit parameters
Evaluate accurate parameters
24. Feature scope
• The future scope of this project is implemented with the advanced controllers like
• Fuzzy-pi controller
• Neural network controller
• By using these controllers the system performance and efficiency may be
increased compared to our proposed anfis controller method.
25. Conclusion
• In this paper, the complete model of EV charging system with the utilization of
Anfis controller is presented.
• The complete simulation model has been developed in MATLAB/Simulink.
• The achieved simulation results show how easy Anfis can be used in EV charging
without the requirement for any tuning like with fuzzy logic controller.
• In perspective of this work, simulation of the proposed scheme can be performed.
