Active Clamp Soft-Switching PWM High-Frequency Inverter for Induction Heated Hot Water Producer

This paper presents a new concept of stainless-steel eddy current-based electromagnetic induction screw type for heat exchanger or double pack heaters in hot water product, steam boiler and high heating evaporator, which is more suitable and acceptable to consumers of a new generation for energy applications. In addition, the active clamped edge-resonant highfrequency PWM inverter using trench-gate IGBTs power module can operate according to the zero-voltage soft-switching principle with PWM and has been developed and proven for high-efficiency hot water heating boiler and product in consumer power applications. The power device for consumer induction heater using active-clamp soft-switched PWM highfrequency inverter is evaluated and discussed based on simulation through PSIM and experimental results. To extend the operating ranges of zero-voltage soft-switching under a low-power setting as well as improve efficiency, a high-frequency pulse density modulation strategy for a high-frequency soft-switched inverter is demonstrated. The practical effectiveness of induction heating power supply has been greatly proven from the point of view of induction heating application. © 2022 Published by Faculty of Engineering – Sohag University. DOI: 10.21608/sej.2022.117926.1007