Bridgeless PFC Controller Project for Power Electronics Students at OSU, Study Guides, Projects, Research of Electrical and Electronics Engineering

Download Bridgeless PFC Controller Project for Power Electronics Students at OSU and more Study Guides, Projects, Research Electrical and Electronics Engineering in PDF only on Docsity! Senior Project Sponsors 2007-2008 School of Electrical Engineering & Computer Science Oregon State University Project Description Create a bridgeless PFC for up to 5hp DC motors. A bridgeless PFC controller works by controlling current coming into the diode bridge to follow the input voltage. Essentially, the PFC causes load to resemble a near perfect DC load. The bridgeless is a fairly new design schematic, because it replaces two of the 4 diodes with a pair of power Mosfets, or IGBT’s. This removes extra voltage drops from diodes, thus creating a more efficient schematic. The diagrams below shows the difference between the bridgeless PFC and a standard PFC. Standard PFC (D7 is what reduces the efficiency) Note: the bridgeless topology is single phase the PFC below is for 3phase