Arduino Induction Furnace

Introduction

Here we aim for the Induction Furnace Construction Set based on Arduino, starting with the simplest case to a full control and feedback example.

The simplest case is a high frequency oscillation that induces a current in the material being melted. This can work for a material of predictable geometry, and may not be efficient because the power draw of a load will vary throughout a melt. This is a good experiment for a high school programming, science, shop class.

The more advanced version includes full feedback to vary the power input by varying the frequency of EMF oscillation to the melt. This is done with a phase-lock feedback loop. Essentially, when you want to heat electrons, they have to be in phase with the energy source driving them, otherwise, you are cooling the electrons or wasting energy.

Analysis of Industry Standards

DIY

• Uses Arduino to detect phase between input voltage and tank capacitor to change the applied frequency as needed. 12kW by imsmooth. [1]. More - [2]. No Arduino code appears to be presented.