Seminar Report 2013

ACKNOWLEDGEMENT

I would like to take this opportunity to express my sincere thanks and gratitude to all those who guided me and were a great source of help during the preparation of this seminar workFirstly, I thank God, the Almighty, with whose blessings, this seminar has been successfully completed.I wish to give deep sense of acknowledgement to our principal Dr. P. A. Rajan for his constant encouragement and valuable advice throughout the course. I am extremely grateful to Mrs. Anuja T. A., Head of the department of Electrical and Electronics Engineering, for her valuable guidance through my humble endeavor. Her highly enterprising attitudes, patience for listening to my doubts, timely suggestions and guidance made my seminar a reality in stipulated time. The meticulous encouragement and the valuable assistance of seminar coordinators Mrs. Smarty P Preman and Mrs. Sheeba V H are worth mention.I express my sincere gratitude to all the faculty members of the department of Electrical and Electronics for their co-operation and support to my seminar.I also express my sincere gratitude to my parents and all my friends for their co-operation and constant inspiration.

TIJO THOMAS

ABSTRACT

The battery is an indispensable component of portable electronic equipment, but charging is often inconvenient. A contactless electric power supply, such as the desk-type contactless power station (CLPS) we propose, significantly improves the ease of charging such equipment. In this system, primary coils are embedded into the desk surface to efficiently supply electrical power to portable equipment placed on the desk. Only the primary and the secondary coils facing each other work as a power transmitter. We have confirmed that electric power transmission with efficiency of 80-90%can be attained anywhere on the desk. This examination reveals the effectiveness of using several primary coils and corresponding secondary coils.

CONTENTS

SL NO TOPIC PAGE NO

1 INTRODUCTION..01

2 CONTACTLESS POWER SUPPLY (CLPS).....02

3 DESK TYPE CONTACTLESS POWER STATION .................07

4 CIRCUIT DIAGRAM...11

5 TRANSMISSION CHARACTERISTICS 5.1) When the Primary Coils Correspond to the Medial Axis...13 5.2) When the Primary Coils Did Not Correspond to the Medial Axis...15 6 DEMONSTRATION EXPIRIMENT..18

7 ADVANTAGES & DISADVANTAGES ....19

8 APPLICATIONS....20

9 CONCLUSION...22

10 REFERENCES...23 11 APPENDIX.24