This document describes an induction heating project. The goals of the project were to build knowledge of induction heating, meet industry needs for simplicity, power savings, clean heating, and fast productivity. The project aimed to build a model induction surface hardening machine and test it. Key aspects of the design included a high frequency power supply using an IGBT module, a PIC microcontroller for control, IGBT drivers including an opto-coupler and IR2110, a matching coil, induction heating coil, and capacitor. Problems encountered included failures of the PIC, IR chip, and issues with the opto-coupler and matching between the PIC and IGBT gate.

1. Done By:
Qadri Mayaleh & AbdelRahman Abbass
Supervisor:
Dr. Samer Mayaleh

2. Introduction
What is Induction Heating?

3. Introduction
Why the Induction Heating?
Controlled
features
Energy
conservation
Non-contact
heating
Environmentall
y friendly
Clean heating
Increase
production line
speeds

4. Application
Industrial application
Housing applications
Medical application
(precision induction heating)

5. Project 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.

6. Background for Induction Heating
Induction Heating
Eddy Current Skin Effect Ferromagnaric Material

7. Background for Induction Heating
Resonance
Parallel resonance
Tank circuit

8. Modeling of induction heating

9. Design criteria

10. Design criteria
There are two serious problems especially become important when the
material starts heating up.
R ↑
µ ↓

11. The High frequency power
supply Design
 High frequency power supply
• Low freq. AC supply DC source.

12. Practical design
High frequency power supply
DC - source High frequency AC source
2MBI 50N-120 FUJI IGBT Module

13. Practical design
PIC Microcontroller (16F877A)

14. Practical design
IGBT DRIVERS…
Opto-Coupler
IR2110

15. Practical design
L6384E

16. Practical design
BOOTSTRAP CAPACITOR

17. Practical design
Matching Coil
Ferrite transformer,
Matching circuit such as an L-match network.

18. Practical design
Induction Heating Work coil.
L=3.2 uH
N=4.5 turns
Inner diameter =7cm
Induction Heating Capacitor.
ceramic capacitor
0.1 uF,450 V
To produce 3uF, 450 V.

19. Problems
PIC microcontroller failure.
IR FAILURE.
Opto-coupler Constrains.
Mismatching between PIC microcontroller and
IGBT gate.

20. Cost