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Showing 1 to 7 of 7 for “"Bridgeless PFC"”.
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CCM Totem Pole Bridgeless PFC with Ultra Fast IGBT
The totem pole PFC suffers from the Mosfet body diode reverse recovery issue which limits this topology adopted in the CCM high power condition. As the ultra-fast IGBT which is capable of providing 100 kHz switching frequency is available in the market, it is possible to apply the totem pole PFC in …
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Single-switch bridgeless PFC sepic with proposed series-line-diodes-clamped configuration for data communication applications
This research presents a Single-Switch Bridgeless PFC (SSBPFC) SEPIC which is passive PFC with proposed series-line-diodes-clamped (SLDC) configuration for circuit structure simplicity and power quality issues mitigation. The structure simplification considers the reduction in number of components, …
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Power Interface Design and System Stability Analysis for 400 V DC-Powered Data Centers
… cost in data centers. A cascaded totem-pole bridgeless PFC converter to convert grid ac voltage to the 400 V dc voltage is proposed in this work. Three main control strategies are developed for the power converters. First, a model predictive control is developed for the cascaded totem-pole …
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Modeling and Mitigation of EMI from Near-Field Coupling Effects in Front-End Power Supplies
… magnetics. This structure is applied to a PFC inductor to contain its electric field and reduce the converter's CM noise by as much as 28 dB, without causing any significant increase in converter loss. The modeling and mitigation strategies are first demonstrated using a relatively simple …
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Design of Extreme Efficiency Active Rectifier for More-electric Aircrafts
… focused on boost-type power factor correction (PFC) converters due to the promising efficiency and good PFC characteristics. The well-known two-level semi-bridgeless PFC boost rectifier, together with its interleaved and three-level counterparts, are studied and compared in this work. The …
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Modeling and Control of Single Switch Bridgeless SEPIC PFC Converter
… on the power quality, power factor correction (PFC) has become an important issue in light-emitting diode (LED) lighting applications. A boost converter is one of the most well-known PFC topologies, due to its simple circuitry, simple control scheme and small number of passive components. Even …
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Investigation of High-density Integrated Solution for AC/DC Conversion of a Distributed Power System
… power density of front-end AC/DC converters. For PFC stage, at low switching frequency, PFC inductor size is large and limits the power density. Although increasing switching frequency can dramatically reduce PFC inductor size, EMI filter size might be larger at higher switching frequency because …