Prototype Electric Vehicle Prototype 54 Charging Indicator Conclusion

4.4.4 Correlation between of input power via transmitter circuit and output power

via receiver circuit in fixed distance of 10 cm 48

4.4.5 Relationship between of input power via transmitter circuit and output power

via receiver circuit in fixed distance of 15 cm 49

4.5 Prototype

50 4.6 Prototype with a different obstacle between transmitter coil and receiver coil 51 4.7 Result of the circuit prototype demonstration 53

4.8 Electric Vehicle Prototype 54

4.9 Charging Indicator

55 4.10 Chapter Summary 56 VI CONCLUSION AND RECOMMENDATION

5.1 Conclusion

57 5.2 Recommendation 59 REFERENCES 60 APPENDICES 62 LIST OF TABLES TABLE TITLE PAGE 2.1 Comparison of advantage and disadvantage of three 16 wireless power transfer method LIST OF FIGURES FIGURE TITLE PAGE 1.1 Example of electric car using plug in cable 3 2.1 Block Diagram of Microwave System 8 2.2 Magnetic field around the wireconductor 12 2.3 Transformer 13 3.1 Block diagram of the system 20 3.2 Schematic design of transmitter circuit 21 3.3 Schematic design of receiver circuit 21 3.4 Methodology flowchart 23 3.5 Methodology flowchart 24 3.6 Circuit testing using breadboard 26 3.7 Circuit tested using multimeter to check functionality 26 3.8 Transmitter and Receiver coil manufacturing 28 Multilayer air core Inductor 3.9 Layout design of transmitter circuit 29 3.10 Layout design of receiver circuit 29 3.11 Acrylic sheet 31 3.12 Toy’s tyre 31 3.13 Charger module with rechargeable battery 31 3.14 Schematic of LCD Circuit Diagram 32 3.15 MAX17043 Fuel Gauge 33 3.16 Toroidal core inductor 34 3.17 IRFZ44N Power MOSFET 35 3.18 Enameled Cooper Wire 35 4.1 Frequency produced by an oscillator 38 4.2 Completed prototype model of wireless 40 power transfer system 4.3 Relationship between output voltages V and 41 output current mA versus distance 4.4 Relationship between output power W and 42 output current mA versus distance 4.5 Relationship between output voltages V and 44 output current mA versus input voltage V 4.6 Relationship between input voltages V versus 46 efficiency, ŋ at the distance of 0 cm 4.7 Relationship between output voltages V and 47 current mA versus input voltage V at the distance of 5 cm 4.8 Relationship between output voltages V and c 48 urrent mA versus Input Voltage V at the distance of 10 cm 4.9 Relationship between input voltages V and 49 current mA versus input voltage V at the distance of 15 cm 4.10 LED light up brightly when the coil is closer 50 4.11 LED dim slightly when the coil is far each other 50 4.12 A pack of soil 51 4.13 A pack of water 51 4.14 Thick book 51 4.15 Correlation between output voltages with 52 different barrier versus distance 4.16 The output of receiver can be used as charger 53 of smartphone 4.17 An electric vehicle prototype integrated with 54 wireless power transfer device 4.18 Charging indicator to show the charging percentage 55 of the battery LIST OF APPENDICES NO TITLE PAGE A Table of Collected Data 62 G Source Code of Charging Indicator 68 H INOTEK Poster 70 CHAPTER 1 INTRODUCTION

1.1 Introduction