Title :
A transformer-coupled, series-resonant topology for the induction heating of aluminum cookware
Author :
Amrhein, Andrew ; Lai, Jih-Sheng Jason
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Induction heating of aluminum cookware is difficult due to its low resistivity and lack of ferromagnetic properties. Both of these factors result in an effective impedance reflected through the work coil that is too low for practical inverter design and makes efficient coil design difficult. This paper presents a transformer-coupled topology as a means of efficiently delivering the desired amount of power into such low-impedance induction heating loads while keeping the inverter design within practical constraints. This topology consists of a conventional series-load-resonant coil/capacitor circuit. A high-frequency transformer is then used to the couple the series-resonant load to a full-bridge inverter, removing the constraint between load impedance and inverter design. The proposed circuit is built and its operation is experimentally verified.
Keywords :
high-frequency transformers; induction heating; invertors; aluminum cookware; high-frequency transformer; induction heating; inverter design; low-impedance induction heating; series-load-resonant coil/capacitor circuit; transformer-coupled series-resonant topology; Capacitors; Impedance; Inverters; RLC circuits; Resistance; Resonant frequency; Topology; All-metal induction cooker; high-frequency inverter for induction heating; series-load-resonant; transformer impedance matching;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on
Conference_Location :
Seoul
DOI :
10.1109/ICPE.2015.7167938