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| 带有功率因数校正的电荷控制型Flyback变换器的分析与设计 |
| Analysis and Design of Flyback PFC with Charge Control |
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| DOI：10.3969/j.issn.1671-5322.2002.04.003 |
| 中文关键词: 功率因数校正 电荷控制 分析 设计 |
| 英文关键词: power factor correction(PFC) charge control analysis design |
| 基金项目: |
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| 中文摘要: |
| 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. |
| 英文摘要: |
| 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. |
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