working of induction heating by stead fast engineers
TRANSCRIPT
Working of Induction Working of Induction Heating by Stead Fast Heating by Stead Fast
Engineers Engineers
http://www.steadfastengg.com/
IntroductionIntroductionWhat is Induction Heating?
IntroductionIntroductionWhy the Induction Heating?
Controlled features
Energy conservation
Non-contact heating
Environmentally friendly Clean heating
Increase production line speeds
ApplicationApplicationIndustrial 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 Background for Induction HeatingHeating
Induction HeatingEddy Current Skin Effect Ferromagnaric
Material
Background for Induction Background for Induction HeatingHeating
ResonanceParallel resonance Tank circuit
Modeling ofModeling of induction induction heatingheating
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 The High frequency power supply Designpower supply Design
High frequency power supply• Low freq. AC supply DC
source.
Practical designPractical designHigh frequency power High frequency power supplysupply
DC - source High frequency AC source
2MBI 50N-120 FUJI IGBT Module
Practical designPractical designPIC Microcontroller (16F877A)
Practical designPractical designIGBT DRIVERS…Opto-Coupler
IR2110
Practical designPractical designL6384E
Practical designPractical designBOOTSTRAP CAPACITOR
Practical design Practical design Matching Coil
Ferrite 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.
ProblemsProblemsPIC microcontroller failure.IR FAILURE.Opto-coupler Constrains.Mismatching between PIC microcontroller and IGBT gate.