Design and Construction of an Induction Coil
Chapter One
AIMS OF THE STUDY
The principle aim of this project is to construct an induction coil, which is capable of inducing 2500volts on the secondary coil which would produce an electric spark at the adjustable gap between the two terminals of the secondary winding as a result of the very high voltage in it when a current is passed through the device.
CHAPTER TWO
LITERATURE REVIEW
INTRODUCTION TO HIGH FREQUENCY AC INDUCTION HEATING SYSTEM
Induction heating is a non-contact heating process. It utilizes high frequency AC supply to heat the conductive materials. Since it is non-contact, warming methodology does not pollute the material being warmed and the efficiency is incredibly high since warmth is made inside the work piece and no glow is dissipated. This can be emerged from other warming systems where heat is created in a fire or warming segment, which is then associated with the work piece. Thus Induction Heating fits some striking applications in industry.
WORKING PRINCIPLE OF IH SYSTEM
To generate large alternating current from coil a high frequency electricity sorce is required. The coil shown in below Figure 2.1 is referred as work coil. A highly intense and rapidly changing magnetic field is produced in space of the work coil when current is passed through the coil. To heat the work piece it is kept under this rapidly and alternating magnetic field. Various things happen, according to the nature of work piece. A current is induced in the work piece when it comes under the contact of alternating magnetic field. The arrangement of coil and work piece will be viewed as that of an electrical transformer. Work coil acts as a primary of a transformer and work piece will act as a secondary of transformer. This combination will make a large amount of current to flow through the work piece. These currents are basically referred as eddy currents.
Furthermore, the high recurrence utilized in enlistment warming applications offers ascends to a wonder called skin impact. This skin impact powers the substituting current to stream in a meager layer towards the outside of the work piece. The skin impact builds the viable obstruction of the metal to the sectionof the expansive current. In this way it incredibly builds the warming impact brought about from current incited in work piece.
CHAPTER THREE
DESIGN
MICROCONTROLLER-PIC16F877A
It is a standout amongst the most eminent microcontrollers. The coding of this controller is similar and helpful to utilize. It uses FLASH memory innovation so it can be composed as many times as possible. It consists of 40 number of pins out of which 33 pins are for input and output as shown in Figure 3.1. It has many applications in substantial number of gadgets like digital electronic circuits, remote sensor, security home automation and safety devices. Many information like transmitter codes and receiver frequencies are stored permanently by the help of EEPROM. It can be used in coprocessor and timer applications.
CHAPTER FOUR
SIMULATION RESULTS OF INDUCTION HEATING SYSTEM
GENERAL
This chapter mainly deals with the software inputs and the results. Software’s used in this are MATLAB and MPLABIDE Introduction to MATLAB, circuit diagram, its results and about the MPLABIDE coding are explained below.
INTRODUCTION TO MATLAB
It is a multi-paradigm numerical computing environment programing language developed by MATHWORKS It allows matrix manipulation, implementation of algorithms and interfacing with programs written in other languages including c, c++, JAVA, python. MATLAB has turned into an incredible asset on the business application just as in scholastics, these days. It is currently basic for an electrical designer to comprehend the idea of reenactment and gain proficiency with its utilization in different applications. Reproduction is a standout amongst the most ideal approaches to think about the framework or circuit conduct without harming it .The devices for doing the recreation in different fields are accessible in the market for building experts.
CHAPTER FIVE
HARDWARE IMPLEMENTATION
HARDWARE SETUP
CHAPTER SIX
CONCLUSION & FUTURE SCOPE
An induction heating system without capacitor has been proposed. Software simulation of output current and output voltage waveform has been done using MATLAB and coding has been done by using MPLABIDE software. A single phase resonant inverter has been used to decrease the hard switching losses. This is called soft switching. In existing induction system it is found that a coil has a capacitor in order to have a resonance condition. When overcurrent comes probability of damaging of capacitor is very high. So this system has been replaced with self- resonating coil which has selfcapacitive nature.
FUTURE SCOPE
- Multi load can be
- It can be used in curing
REFERENCES
- Lope, J. Acero, J. M. Burdío, C. Carretero and R. Alonso, “Design and Implementation of PCB Inductors With Litz-Wire Structure for Conventional-Size LargeSignal Domestic Induction Heating Applications,” in IEEE Transactions on Industry Applications, vol. 51, no. 3, pp. 2434-2442, May-June 2015.
- Acero, P. J. Hernandez, J. M. Burdio, R. Alonso and L. A. Barragdan, “Simple resistance calculation in litz-wire planar windings for induction cooking appliances,” in IEEE Transactions on Magnetics, vol. 41, no. 4, pp. 1280-1288, April 2015.
- Acero, R. Alonso, J. M. Burdio, L. A. Barragan and D. Puyal, “Frequency-dependent resistance in Litz-wire planar windings for domestic induction heating appliances,” in IEEE Transactions on Power Electronics, vol. 21, no. 4, pp. 856-866, July 2016.
- Lucia, C. Carretero, D. Palacios, D. Valeau and J. M. Burdio, “Configurable snubber network for efficiency optimisation of resonant converters applied to multi-load induction heating,” in Electronics Letters, vol. 47, no. 17, pp. 989-991, 18 August 2011.
- José Espí Huerta, Enrique J. DedeGarcíaSantamaría, Rafael García and GilRafaelGarcía Gil, “Design of the L-LC Resonant Inverter for Induction Heating Based on Its Equivalent SRI,” IEEE Transactions On Industrial Electronics, Vol. 54, No. 6, December 2007.
- MokhtarKamli, ,, Shigehiro Yamamoto, and Minoru Abe, “A 50-150 kHz Half Bridge Inverter for Induction Heating Applications,” IEEE Transactions On Industrial Electronics, Vol. 43, No. 1, February
