Introduction To INDUCTION SURFACE HARDENING …€¦ · PPT file · Web view · 2017-09-06Background for Induction Heating Induction Heating Eddy Current Skin Effect Ferromagnaric

Done By:Qadri Mayaleh & AbdelRahman Abbass

Supervisor:Dr. Samer Mayaleh

IntroductionWhat is Induction Heating?

Introduction

Why the Induction Heating?

Controlled features

Energy conservation

Non-contact heating

Environmentally friendly Clean heating

Increase production line speeds

Application

Industrial application

Housing applications

Medical application (precision induction heating)

Project goalsbuild and formulate a basic knowledge about

induction heating .

deal with the industry requirements for simplicity ,saving the power consumption, clean heating and fast productivity.

To build a model for induction surface hardening machine.

Carry out some testing on the model.

Background for Induction HeatingInduction HeatingEddy Current Skin Effect Ferromagnaric

Material

Background for Induction Heating

ResonanceParallel resonance Tank circuit

Modeling of induction heating

Design criteria

Design criteria There are two serious problems especially become important

when the material starts heating up.

R ↑

µ ↓

The High frequency power supply Design

High frequency power supply• Low freq. AC supply DC source.

Practical designHigh frequency power supplyDC - source High frequency AC source

2MBI 50N-120 FUJI IGBT Module

Practical designPIC Microcontroller (16F877A)

Practical design

IGBT DRIVERS…Opto-Coupler

IR2110

Practical designL6384E

Practical designBOOTSTRAP CAPACITOR

Practical design Matching Coil

Ferrite transformer, Matching circuit such as an L-match

network.

Practical design

Induction Heating Work coil.

L=3.2 uHN=4.5 turnsInner diameter =7cm

Induction Heating Capacitor.

ceramic capacitor0.1 uF,450 VTo produce 3uF, 450 V.

Problems

PIC microcontroller failure.IR FAILURE.Opto-coupler Constrains.Mismatching between PIC

microcontroller and IGBT gate.

Cost