Design And Implementation of Low-Cost Power Efficient Embedded Control Systems in Domestic Induction Heating Appliances

The proposed modulation technique of power converter topology provides high reliability, excellent performance, minimum energy consumption which reduces switching loss. The Power converter features a full-bridge resonant converter operating with a switching frequency ( ) between 15 kHz and 40 kHz in order to improve efficiency and power density make a suitable solution for domestic induction heating appliances. The digital control systems of these appliances require performing accurate and smooth power control while assuring the safety of the power devices. In order to accomplish, it is necessary to provide the target output power and specific current parameters selected by the user. A/D converter subsystem digitizes the output current. ΣΔ ADCs combines oversampling and the shaping of the quantization noise to achieve high accuracy, which makes them a cost effective and power efficient solution. Keywords—Analog To Digital Converter, Digital Control, Induction Heating, Resonant Power Conversion.