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INTRODUCTION TO INTRODUCTION TO INDUCTION HEATING BY INDUCTION HEATING BY
STEAD FAST ENGINEERS PVT STEAD FAST ENGINEERS PVT LTDLTD
Stead Fast Engineers provides world class induction heating and melting solutions for both ferrous and Non ferrous with a great focus on customization so that every machine is nothing less than perfect. http://www.steadfastengg.com/
IntroductionIntroductionWhat is Induction Heating?
IntroductionIntroduction
Why the Induction Heating?
Controlled features
Energy conservation
Non-contact heating
Environmentally friendly
Clean heating
Increase production line speeds
ApplicationApplication
Industrial application
Housing applications
Medical application (precision induction heating)
Project goalsProject goals
build 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 HeatingBackground for Induction Heating
Induction HeatingEddy Current Skin Effect Ferromagnaric
Material
Background for Induction HeatingBackground for Induction Heating
ResonanceParallel resonance Tank circuit
Modeling ofModeling of induction heatinginduction heating
Design criteriaDesign criteria
Design criteriaDesign criteria
There are two serious problems especially become important when the material starts heating up.
R ↑
µ ↓
The High frequency power The High frequency power supply Designsupply Design
High frequency power supply• Low freq. AC supply DC
source.
Practical designPractical designHigh frequency power supplyHigh frequency power supply
DC - source High frequency AC source
2MBI 50N-120 FUJI IGBT Module
Practical designPractical design
PIC Microcontroller (16F877A)
Practical designPractical design
IGBT DRIVERS… Opto-Coupler
IR2110
Practical designPractical designL6384E
Practical designPractical design
BOOTSTRAP CAPACITOR
Practical design Practical design
Matching CoilFerrite transformer, Matching circuit such as an L-match
network.
Practical design 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.
ProblemsProblems
PIC microcontroller failure.IR FAILURE.Opto-coupler Constrains.Mismatching between PIC
microcontroller and IGBT gate.
