All-In-One Induction Heating Using Dual Magnetic Couplings

Abstract

This paper proposes and implements an all-in-one induction heating system, which can accommodate both pan-shaped and wok-shaped utensils. Traditionally, the pan is heated by a planar induction cooktop while the wok is heated by a curved induction cooktop. In this paper, both magnetic inductive coupling and magnetic resonant coupling are utilized to achieve excellent heating performance of the wok based on a planar primary coil. The key is to flexibly employ a detachable frustum coil for heating the wok. Specifically, the theoretical models of the proposed induction heating system with and without using the frustum coil are derived to analyze the proposed system. Computational simulation results of the magnetic and thermal fields of the proposed system are provided to elaborate the heating performance of the wok. A 1500 W prototype is designed and built. The calculated, simulated and experimental results are all in good agreement, which validate the feasibility of the proposed induction heating system well.

Design, Analysis and Experimental Verification of the Self-Resonant Inverter for Induction Heating Crucible Melting Furnace Based on IGBTs Connected in Parallel

“…Another group of papers focused on induction heating devices for cooking [32][33][34][35][36], which usually have flat inductors and an installed power in the range of 1.5-2.8 kW. According to their shapes and materials, an important issue is the magnetic coupling between the inductor and the loads, i.e., pan, pot and wok [32,33]. The other parts of the control system: sensors, feedbacks, filters, etc., are also well investigated from the cooking-intended induction heaters [34][35][36].…”