December 13, 2017
Comments Off on A Novel Control Scheme of Quasi-Resonant Valley-Switching for High-Power-Factor AC-to-DC LED Drivers
Posted in: IEEE 2017, Power System
A Novel Control Scheme of Quasi-Resonant Valley-Switching for High-Power-Factor AC-to-DC LED Drivers Abstract: This paper presents a novel control scheme of quasi-resonant (QR) mode and valley-switching for high-power-factor (PF) ac-to-dc light-emitting diode (LED) drivers. The proposed driver control scheme is based on a buck PF corrector converter, which is operated in QR valley-switching. The proposed […]
December 13, 2017
Comments Off on Loss-Free Resistor-Based Power Factor Correction Using a Semi-Bridgeless Boost Rectifier in Sliding-Mode Control
Posted in: IEEE 2017, Power System
Loss-Free Resistor-Based Power Factor Correction Using a Semi-Bridgeless Boost Rectifier in Sliding-Mode Control Abstract: In this paper, a loss-free resistor based on a semi-bridgeless rectifier is proposed for power factor correction applications. This particular bridgeless rectifier type is composed of two different boost cells which operate complementarily during each half-line cycle. In case of two […]