A Study of 450 kHz Induction Heating System for CRT Manufacturing

450 kHz 브라운관 제조용 유도가열 전원장치 개발연구

This paper describes an induction heating system which is developed for CRT manufacturing. This system consists of a buck chewer, a voltage source full-bridge inverter, and a series resonant circuit with a matching transformer. A series resonant scheme is employed, and operated at the zero phase of the resonant load by PLL. This ensures maximum power transfer, good efficiency and reliability of the system. Implementation of a prototype rated of 3 kW 450 kHz is described and experimental results are given.