A novel high power factor soft-switching communication power supply

Yue, Yuntao; Lin, Yan

doi:10.1109/iciea.2011.5975605

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…With the development of the digital technology, the PFC technology, as one of the main methods for reducing the harmonic pollution and improving the power quality, has become a popular research in the power electronics field [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

The APFC system based on an improved duty cycle control algorithm

Hui-zhi

Huai-jian

et al. 2011

Proceedings of 2011 6th International Forum on Strategic Technology

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Aiming at the problem that the digital control Power Factor Correction technology has some deficiencies in the dynamic responses and stability, a new Active Power Factor Correction(APFC) system based on an improved duty cycle control algorithm is designed in this paper. In this algorithm, when the load and the input voltage go step change, the output voltage ripple and the input voltage feed-forward are introduced to compensate the duty cycle during each switch cycle to ensure the input current an undistorted sinusoid. So it guarantees the high speed of dynamic response and the stability of the APFC system. Also the efficiency and reliability of the APFC system are improved by applying minimal voltage active-clamp soft switching technology, which can inhibit the reverse recovery of diodes effectively.Keywords-power factor correction; soft-switching; duty cycle control algorithm; output voltage ripple; input voltage feed-forward 1.

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Section: Introductionmentioning

confidence: 99%