【摘要】 提出了一种M级交错、N重开关并联(M×N)且所有功率器件移相驱动的有源功率因数校正器(APFC),分析了其电路结构和工作原理,包括电压变比、纹波电流、驱动方法和控制方式。该M×N APFC变换器能在传输大功率的同时,降低功率器件的开关频率,简化功率器件的选型,并保持升压电感的工作频率不变,或保持功率器件的开关频率不变,成倍提高升压电感的工作频率,简化电感设计。以2×2 APFC为例,进行了实验研究,获得了非常满意的效果,验证了所提整体方案的正确性。更多还原

【Abstract】 This paper proposes a new single-phase M level and N power devices in parallel(MxiV) active power factor corrector(APFC) which is driven by shift phase control method.Then the paper analysis its circuit structure and working principle,including voltage transformation ratio,ripple current,driving method and control methods.This M×N APFC can transmit high power and reduce the switching frequency of the power devices.This circuit structure simplifies the selection of power devices.Mean while,it can also maintain the operating frequency of the Boost inductor unchanged or maintain the switching frequency of the power device constant.This control method improves the operating frequency of the Boost inductor several times and simplifies the inductor design.The result verifies that this control method is workable.更多还原