Main Content

Power Factor Correction for CCM Boost Converter

This example shows how to correct the power factor using a PFC pre-converter. This technique is useful when non-linear impedances, such as Switch Mode Power Supplies, are connected to an AC grid. As the current flowing through the inductor is never zero during the switching cycle, the boost converter operates in Continuous Conduction Mode (CCM). The inductor current and the output voltage profiles are controlled using simple integral control. During start up, the reference output voltage is ramped up to the desired voltage.


Simulation Results from Simscape Logging

The plot below shows the line voltage and current and the output voltage.