전압원 및 전류원 구동 공진형 인버터로 구성된 향광등용 전자식 안정기의 역률개선에 적합한 수동 역률 개선 회로에 관한 연구 = Passive Power Factor Correction Circuits for Electronic Ballasts using Voltage-Fed and Current-Fed Resonant Inverters

다국어 초록 (Multilingual Abstract)

Several power factor correction(PFC) circuits are presented to achieve high PF electronic ballast for hath voltage-fed and current-fed electronic ballast. The proposed PFC circuits use valley-fill(VF) type DC-link stages modified from the conventional VF circuit to adopt the charge pumping method for PFC operations during the valley intervals. In voltage-fed ballast, charge pump capacitors are connected with the resonant capacitors. In current-fed type, the charge pump capacitors are connected with the additional secondary-side of the power transformer. The measured PF and THD are higher than 0.99 and 15% for all proposed PFC circuits The lamp current CF is also acceptable In the proposed circuits. The proposed circuit is suitable for implementing cost-effective electronic ballast.

목차 (Table of Contents)

• Abstract
  
• 1.서론
  
• 2.전압원 방식에 적합한 수동 역률개선회로
  
• 3.전류원 방식에 적합한 수동 역률개선회로
  
• 4.결론
  
• 참고문헌