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DESIGN AND DEVELOPMENT OF

FAST CHARGING SYSTEM FOR ELECTRIC VEHICLES

Department of Electrical and Electronic Engineering

Supervised by:

Dr. Mohammad Jahangir Alam

Professor,

Department of EEE, BUET

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Submitted by:

Promit Biswas 1806071

K.M Zulfikkar Sadik 1806084

Tasmiah Afrin 1806108

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    • Introduction
    • Motivation
    • Objectives
    • Components
    • Methodology
    • Schematic Diagrams
    • Simulink Model
    • Simulation Results
    • Hardware Images
    • Video Demonstration
    • Charging Result
    • Novelty
    • Conclusion
    • Future Work

PRESENTATION

OUTLINE

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INTRODUCTION

  • This thesis explores enhancing EV fast charging through 230-volt high-power stations and advanced batteries like solid-state and lithium-ion.

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  • It emphasizes smart battery management and grid tech for efficiency and longevity, advocating collaboration among charging providers and regulators for standardized fast charging.

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MOTIVATION

    • EVs as a solution to environmental issues.
    • Demonstrate how fast-charging tech encourages EV adoption.
    • Emphasize reduced pollution and increased green energy.
    • Importance for policymakers, businesses & tech developers.
    • Reduce environmental impact.
    • Promote sustainable transport.

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OBJECTIVES

    • Optimizing charging speed
    • Implement advanced power delivery mechanisms
    • User interface enhancement
    • Safety and battery health
    • Contribute to sustainable transportation advancements

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COMPONENTS

ESP-32S

K8A50

MOSFET

IRFZ44N

MOSFET

ASM1117

UC3845

PWM IC

Buck Converter IC

LM7805

Capacitors

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COMPONENTS

Inch TFT LCD

10K Thermistor

High Freq.

Transformer

Cooling Fan

ACS712 Current Sensor

Diode

Resistors

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METHODOLOGY

Grid

SMPS

BUCK Converter

Load

01

02

03

04

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SCHEMATIC DIAGRAMS

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SWITCH MODE POWER SUPPLY (SMPS)

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BUCK SECTION AND SOC

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PASSIVE CELL BALANCING

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SIMULINK MODEL

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SIMULATION RESULTS

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HARDWARE IMAGES

TOP VIEW

BOTTOM VIEW

TESTING 01

TESTING 02

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HARDWARE VIDEO DEMONSTRATION

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CHARGING RESULT

Charging Cycle

Charging State

Time

01

11% - 80%

1 hour 17 mins

02

10% - 80%

1 hour 8 mins

03

10% - 80%

1 hour 11 mins

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NOVELTY

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  • Introducing Mosfet Mapping to ensure both fast charging mode and float charging mode.
  • Continous voltage and temperature monitoring of each cell to ensure a better battery health.
  • Adjusting Buck Converter voltage to obtain a higher current for fast charging.

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CONCLUSION

  • Utilized K8A50 MOSFET, IRFZ44N transistor, ACS712 current sensor, UC3845 PWM controller, and 3.6-inch TFT LCD display.
  • Leveraged Arduino IDE and MATLAB for programming and simulation validation.
  • Enhanced EV charging systems through hardware optimization, sensor integration, and real-time data monitoring.
  • Addressed technical challenges and emphasized sustainable transportation solutions.
  • Aimed at advancing power electronics, battery management, and renewable energy integration for improved electric mobility.

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FUTURE WORK

Incorporation of next-gen MOSFETs, transistors, and sensors for higher efficiency and faster charging.

Research on solar or wind energy for sustainable EV charging.

Explore Synchronous Buck Converters for improved efficiency in EV charging systems.

Enhance efficiency and battery life through active cell balancing.

Further enhancement of Battery Storage System to ensure more optimized charging.

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THANK YOU

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Q&A