A novel technique for induction heating dryer with temperature and voltage control for power inverter

Srivichai, Jeerapong
Somsai, Kittaya
Phuphanin, Akkachai
Pornsuwancharoen, Nithiroth

International Journal of Power Electronics and Drive Systems (IJPEDS)
Vol 17, No 1: March 2026

This study presents a novel prototype of an induction heating dryer integrating hysteresis control with phase-shifted pulse width modulation (PWM) for the first time. The system replaces conventional resistance heating, improving energy efficiency and thermal stability. The 2 kW prototype comprises a drying chamber and a hot air unit with controlled airflow of 1.5 m/s. Phase angle adjustment reduces voltage, current, and power consumption while maintaining the power factor within acceptable limits. The temperature control maintains stability within ±1 °C of the setpoint. The results demonstrate fast, energy-efficient, and precise drying, offering potential benefits for food processing and textile industries, and providing a foundation for future development of intelligent, energy-efficient induction dryers.