**“Innovative Wireless Electricity Transmission Using Electromagnetic Induction Technology”

The PPT on **Wireless Electricity Transmission** explains how power can be transferred **without physical wires** using **electromagnetic induction**. It describes how a **transmitter coil** creates an oscillating magnetic field that a **receiver coil** captures and converts back into electrical energy. The presentation covers the **working principle, components (transmitter, receiver, and power circuit), materials used, and experimental observations**. It highlights **applications** like wireless charging for phones, electric vehicles, and medical devices, while also discussing **challenges** such as energy losses, alignment, and limited range. Finally, it emphasizes the **future scope**, suggesting improvements in efficiency and wider use in daily life and industries.

1. PILLAI HOC COLLEGE OF ENGINEERING & TECHNOLOGY ACADEMIC YEAR 2024-2025 A PRESENTATION ON WIRELESS ELECTRICITY TRANSMISSION BY Harsh Naik Kunal Patil RAJ Jage Purva Patil SECOND-YEAR MECHANICAL ENGINEERING GUIDE: MR. SHASHI BHUSHAN MAHATMA EDUCATION SOCIETY’S

2. ABSTRACT Wireless electricity transmission enables power transfer without physical wires, using the principle of electromagnetic induction. A transmitter coil generates an oscillating magnetic field, which is captured by a receiver coil and converted back into electrical energy. This system has potential applications in wireless charging for devices, electric vehicles, and powering remote systems. The presentation focuses on the working principle, its efficiency over varying distances, and challenges like energy losses and alignment issues. It highlights this innovative technology's possibilities and future potential in modern applications.

3. INTRODUCTION Wireless electricity transmission transfers power without physical wires. A transmitter coil creates a magnetic field, and a receiver coil converts it into electricity. A transmitter coil generates a magnetic field, and a receiver coil converts it back into electricity. Common applications include wireless charging and powering devices remotely.

4. IMPORTANCE & RELEVANCE Advancements in technology: Wireless power transmission eliminates the need for wires, providing flexibility and convenience. Applications : Charging mobile devices, powering remote systems, and electric vehicles. Growing interested in industries such as healthcare, automotive, and consumer electronics.

5. Importance & Relevance OBJECTIVE Purpose: To demonstrate the working principle of wireless electricity transmission. To explore the basic components and prototype of wireless power transmission. To highlight practical applications and challenges in real-world scenarios.

6. “Tesla's Wireless Power Revolution’’

7. EARLY RESEARCH AND CONTRIBUTIONS Nikola Tesla The first person to experiment with wireless power transmission, including his famous " Tesla Coil " to demonstrate wireless electricity. Development of Induction Technology: Early studies on electromagnetic fields and induction laid the foundation for modern wireless power systems.

8. EVOLUTION OF WIRELESS POWER TRANSMISSION Wireless Power in Modern Times : Technological advancements over the past few decades have made it possible to transfer electricity over short distances efficiently. Current Developments : Companies like WiTricity and technology giants like Apple and Tesla are exploring wireless charging systems for smartphones, electric vehicles, and more.

9. Electromagnetic Induction : The basic principle that allows wireless power transmission. A magnetic field is generated by an alternating current (AC) passing through a coil, and this field induces current in another nearby coil. Faraday's Law of Induction: A change in magnetic flux through a coil induces an electromotive force (EMF). INTRODUCTION TO ELECTROMAGNETIC INDUCTION

10. STEP-BY-STEP PROCESS Power Supply → Transmitter Coil The power source sends current through the coil, generating a magnetic field. Magnetic Field → Receiver Coil: The magnetic field reaches the receiver coil, inducing current. Electricity → Load: The induced current is sent to a load (e.g., a device, or battery).

11. TRANSMITTER COIL Function: The transmitter coil is connected to a power source and generates an oscillating magnetic field when alternating current flows through it.

12. TRANSMITTER COIL Role: Creates a magnetic field using alternating current. Material : Usually made of copper wire wound into a coil shape. Key Parameters: Frequency, voltage, and current determine its efficiency.

13. RECEIVER COIL Function: The receiver coil captures the transmitter’s magnetic field and converts it into electrical energy.

14. RECEIVER COIL Role: Captures the magnetic field and converts it into electrical energy. Material: Similar to the transmitter coil, often copper. Efficiency: Depends on the alignment with the transmitter coil and the distance between them.

15. POWER SOURCE AND CIRCUIT Power Source: Provides the electrical input for the transmitter coil. Oscillator Circuit: Generates alternating current at a specific frequency to create an oscillating magnetic field.

16. SETUP: The transmitter and receiver coils are positioned within a specified range. The transmitter coil is connected to the power source and oscillator. The receiver coil is placed near the transmitter coil to capture the magnetic field.

17. MATERIALS USED List of materials: Transistor BC 549 LED Breadboards Hook up wires 1.2k resistors Copper wires 1.5V battery

18. OBSERVATION Distance Range: How far the receiver coil can be placed from the transmitter while still receiving power? In a simple wireless power circuit to glow an LED, the receiver coil can be placed within 10–20 cm of the transmitter. Efficiency depends on coil size, alignment, frequency, and nearby interference. Resonant coupling or higher power can extend the range. Power Transfer Efficiency : How much energy was transferred and any losses were observed during the experiment ? The energy transferred depends on factors like coil size, distance, and alignment. Typically, efficiency is low, with 50–70% energy loss due to resistance in the coils, imperfect alignment, and distance. The energy transferred can vary, but significant losses are usually observed in simple setups.

19. APPLICATIONS 1.Wireless Charging for Devices Smartphones and Laptops: Increasing adoption of wireless charging for consumer electronics. Wearables: Wireless charging for devices like smartwatches and wireless headphones.

20. 2. Electric Vehicles Wireless Charging for EVs: Using wireless power transfer to charge electric vehicles without physical connectors. Benefits: Convenience and improved infrastructure. 3. Medical and Remote Systems Medical Implants: Powering pacemakers, hearing aids, and other devices without wires. Industrial and Remote Areas: Powering sensors or devices in hard-to-reach locations without cables.

21. CHALLENGES AND LIMITATIONS Energy Loss: Power is lost as heat during transmission, especially over long distances, reducing efficiency. Alignment Issues: Precise alignment between transmitter and receiver coils is essential for efficient power transfer. Distance Constraints : Wireless power transfer is effective only over short distances, with efficiency dropping as distance increases. Cost and Infrastructure : High setup costs and limited infrastructure for wireless charging hinder widespread adoption.

22. FUTURE SCOPE Advancements in Efficiency: Researchers are working on improving the efficiency of wireless power transfer and reducing losses. Broader Adoption: As the technology improves, wireless electricity could become standard in homes, industries, and transportation systems. Next-Generation Devices: Expect larger-scale implementations, such as city-wide wireless power grids.

23. Conclusion Wireless electricity transmission is an innovative and emerging technology. It has the potential to revolutionize how we charge and power devices, offering convenience and flexibility. While challenges remain, the technology’s future holds exciting possibilities for both consumers and industries .

24. REFERENCES Include references to any research papers, articles, websites, or books you used for gathering information. For Example: Tesla, Nikola. "Experiments with Alternate Currents of High Potential and High Frequency.“ Articles from IEEE or other relevant journals on wireless power transfer.