DMCA
Interleaved-Output Method to Reduce Voltage Stress in Single-Stage AC/DC Power-Factor-Corrected Power Supplies
BibTeX
@MISC{Lu_interleaved-outputmethod,
author = {Dylan Dah-chuan Lu},
title = {Interleaved-Output Method to Reduce Voltage Stress in Single-Stage AC/DC Power-Factor-Corrected Power Supplies},
year = {}
}
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Abstract
Abstract — Single-stage power factor corrected (S2PFC) power supplies usually suffer from high voltage stress, due to the lack of control on the intermediate storage capacitor voltage. For long analysis of such voltage stress was based on mathematical analysis extensively. This paper revisits the problem at circuit level and reports the root cause is due to self-regulation property of output current. This paper further proposes a new S2PFC converter with an auxiliary output current branch accordingly. The current branch reduces this property by decreasing the change of output current slope due to change of load. This assists the controller to track the change of load such that the range of storage capacitor voltage fluctuation can be reduced. Simulation results confirmed the theoretical analysis and effectiveness of the approach. 1.
Keyphrases
interleaved-output method reduce voltage stress abstract single-stage power factor simulation result circuit level new s2pfc converter intermediate storage capacitor voltage self-regulation property storage capacitor voltage fluctuation power supply mathematical analysis voltage stress high voltage stress theoretical analysis output current slope root cause auxiliary output current branch current branch reduces long analysis
