Circuits Analysis of Inductive Heating-Device with Half-Bridge Resonated Inverter

摘要

Since Farady's Low of Electrolysis was presented in 1831 in which magnetic inductive phenomenon was implemented in heating facilities, the inductive heating technique has been studied popularly by many scholars all over the world. Today the inductive heating facilities have been applied in many manufacturing tools of many fields in Taiwan, and this promoted research in this field directing to higher power, higher frequency, and higher efficiency as well. This study was pilot study for practical design of resonated heating circuit with half-bridge resonated inverter, especially some critical factors when considering the loading features including its primary theory, skin effects, permeance, conductance, and loading features. Finally, in this study, we made a completed analysis about current flowed in resonated inverter circuits at every key step when IGBT switching to get most efficient power. With this pilot-study, we would implement it into our further advanced research in high-power heating facilities with Half-Bridge Resonated Inverter.