Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Start-up Control of LLC Resonant Inverter for Microwave Oven Application
Authors Kyelyong Kang ; Heung-Geun Kim ; Honnyong Cha
Page pp.463-468
ISSN 1229-2214
Keywords High frequency transformer ; LLC resonant inverter ; Magnetron ; Start-up control
Abstract One of the most critical part for magnetron driving in microwave oven is start-up control. For this, switching frequency of resonant inverter should be carefully controlled in order to supply sufficient power to the filament of the magnetron and to prevent rectifier diode from destruction caused by the excessive voltage across them. This paper proposes a novel start-up control strategy for LLC resonant inverter for microwave oven considering the non-oscillation mode time and the magnetron voltage during the start-up process. The validity of the proposed method is verified through the experiment with 1,200W microwave oven using LLC resonant inverter.