Abstract
This paper presents a novel high frequency (HF) full bridge (FB) inverter for induction heating (IH) applications. The newly proposed FB inverter can convert utility frequency (UF) AC into DC, and DC into HFAC with one-stage power conversion. Simultaneously, the proposed inverter has a PFC function so that the terminal voltage of DC-link-capacitor is boosted all the time, and the current is passed through only one diode component of the diode bridge rectifier by the work of boost-inductor. Therefore, there are some benefits such as minimizing the number of circuit components to use as well as the conduction power losses. The output power of the proposed FB inverter is controlled by Pulse Density Modulation (PDM) scheme, and each switch comprising the inverter legs achieves Zero Voltage-Switching (ZVS) . This paper verifies these beneficial characteristics of the proposed HF one-stage inverter by simulation analyses.
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