Single-source multiple-coil homogeneous induction heating

Abstract

Due to cleanliness, safety and high efficiency, induction heating has been developed rapidly for industrial and domestic heating applications. In this paper, a homogeneous induction heating system has been proposed and implemented. The key is to adopt the magnetic resonant coupling (MRC) mechanism to achieve uniform power distribution of the pan using a single inverter. Specifically, the resonant coil is artfully utilized as the auxiliary coil so that both the primary and auxiliary coils can transmit proper powers to the inner and outer parts of the pan, hence achieving the desired homogeneous heating effect. Theoretical analysis, numerical simulation and experimentation are given to validate the proposed system.