Semi-boost PFC에 의한 형광등용 전자식 안정기 해석

Analysis of the electronic ballast with semi-boost PFC for fluorescent lamps

There are many kinds of electronic ballast for various kinks of fluorescent lamps. The PFC(Power Factor Correction) circuit in electronic ballast is classified in two types. One is the active PFC and the other is the passive PFC circuit. The active type PFC is higher than the passive type, but the cost of the passive type is cheaper than the active type. In this study, we introduced the modified passive PFC method which is called semi-boost PFC, and then we analyzed and experimented the electronic ballast which is composed of the semi-boost PFC, half-bridge, and LCC resonant tank. Experimental results showed that the PF≥0.98, CF≤1.4 and input current THD○ 15%.