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中文摘要：
提出了一种低输出电压纹波准单级反激功率因数校正（PFC）变换器,它由1个双输出反激变换器和1个具有快速动态响应能力的Buck变换器组成,Buck变换器由双输出反激变换器的辅助输出供电,其输出与双输出反激变换器的主输出串联给负载供电。双输出反激变换器用于实现PFC功能;Buck变换器补偿双输出反激变换器主输出的2倍工频电压纹波,实现低输出电压纹波和快速动态响应。实验结果表明,在保持同样功率因数值的前提下,准单级反激PFC变换器极大地减小了单级反激PFC变换器的输出电压2倍工频纹波,其动态响应速度远快于单级反激PFC变换器,与两级级联PFC变换器的动态响应速度相近,并获得了高于两级级联PFC变换器的效率。
英文摘要：
A quasi single-stage flyback PFC（Power Factor Correction） converter with low output voltage ripple is proposed,which consists of a DOFC（Dual-Output Flyback Converter） and a Buck converter with fast dynamic response. The Buck converter is powered by the auxiliary output of DOFC and its output is connected in series with the main output of DOFC as the power source of load. In order to achieve low output voltage ripple and fast dynamic response,the PFC function is realized by the DOFC and the 100 Hz voltage ripple of its main output is compensated by the Buck converter. The experimental results show that,at the same power factor value,the quasi single-stage flyback PFC converter,compared to the single-stage flyback PFC converter,has much lower output voltage ripple of double power frequency and much faster dynamic response;while it,compared to the two-stage flyback PFC converter,has similar dynamic response and higher efficiency.
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