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A Family of Predictive Digital-Controlled PFC Under Boundary Current Mode Control

机译:边界电流模式控制下的预测数字控制PFC系列

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摘要

One of the advantages of power factor corrector with boundary current mode control is the reduction of reversal recovery loss of diode. This paper proposes a family of predictive methods adapted to digital pulse-width modulations for digital-controlled PFC operated under boundary current mode. The DPWM methods include leading-edge modulation, trailing-edge modulation and triangular modulation. For the proposed control method, the switching period retaining zero current switching is predicted and the turn-on period is determined by the voltage controller. Therefore, neither zero-current detection nor high-frequency A/D converter for current sampling is required for the proposed control method.
机译:具有边界电流模式控制的功率因数校正器的优点之一是减少了二极管的反向恢复损耗。本文提出了一系列预测方法,这些方法适用于在边界电流模式下运行的数字控制PFC的数字脉宽调制。 DPWM方法包括前沿调制,后沿调制和三角调制。对于所提出的控制方法,预测保持零电流开关的开关周期,并由电压控制器确定导通周期。因此,该控制方法既不需要零电流检测,也不需要用于电流采样的高频A / D转换器。

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