摘要
研究了电源变换器的电荷控制方式。阐述了电荷控制方式中次谐波振荡与电源及负载之间的关系 ,并对电荷控制型变换器作了小信号分析 ,建立了小信号模型。利用电荷控制 ,Flyback功率因数校正器可工作在连续导通模式 ,并具有单位功率因数 ,其电路结构简单 ,成本低 ,具有良好的应用前景。但它仅适用于电源功率比较小的场合。
A power converter control method, charge control,is studied. The relationship between the subharmonic oscillation and line/load condition of charge control is defined. A complete Small-signal analysis is performed. The small-signal model is confirmed. Using charge control, a Flyback converter can operate in continuous conduction-mode (CCM) with unity power factor. Due to its simplicity and low cost, Flyback PFC is suitable for low power applications. The results show good prospects of application.
出处
《盐城工学院学报（自然科学版）》
CAS
2002年第4期9-13,32,共6页
Journal of Yancheng Institute of Technology:Natural Science Edition
关键词
功率因数校正
电荷控制
分析
设计
power factor correction(PFC)
charge control
analysis
design
