Group: 2013-FYP-25

INDUCTION HEATER USING RESONANT INVERTER WITH FEEDBACK USING PLL

Advisor:

Mr. Habib Wajid

Abstract:

This projects aims to implement Induction heating for metals, employing Single Phase Full Hbridge voltage fed square wave inverter to power series resonant tank used along with coupling transformer. IGBTs are used because of their high current capability with high frequency operation. Driving signals and feedback is implemented via controller. Electrical Model is simulated on MATLAB Simulink and observed output is a pure sinusoidal waveform across tank circuit. The resonant frequency of LC tank is tracked using PLL which is implemented via PID controller. A constant phase difference of 900 between voltage of inverter and tank capacitor voltage ensures the condition of resonance and the process is achieved in real time. When work piece is introduced inside the work coil, the inductance of the coil changes thus resonance frequency also changes. The PID controller taking the feedback signals allows us to reach the resonance frequency as quickly as possible after the insertion of work piece. Moreover, same metal piece offer different inductance at different temperatures, this problem is also solved by PLL.The performance parameters: Resonance frequency, Phase difference and temperature are displayed on LCD. High temperature sensing is required, for that we have employed non-contact IR Temperature sensor.

First Presentation:

Download Link

Video:

Team Members:

Facebook Page

Objectives

Our Vision

To ensure understanding and application of engineering fundamentals to address social needs.

Our Mission

To become a center of excellence in knowledge creation and dissemination by inculcating analysis and design skills in electrical engineering students.

Newsletter

Please provide us your email address to subscribe Newsletter of UET Lahore issued bi-annually.

Un-Subscribe