Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 28, Issue 10, Pages 4723-4731Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2012.2232308
Keywords
Averaging modeling technique; converter modeling; converter simulation; great-signal model; power factor correction; small-signal model
Categories
Funding
- Spanish government [DPI2010-15889, DGPU PHB2010-0145-PC]
- Brazilian government (CAPES/DGU)
- Brazilian government (CEEE-D)
- Italian Fondazione Ing. Aldo Gini, Padova
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In this paper, a straightforward methodology to modeling high power factor (HPF) ac-dc converters is presented. The proposed methodology is based on the averaging technique directly applied to the converter under modeling. An averaged large-signal equivalent circuit is thus generated, which is useful to perform extremely fast simulations. From the large-signal model, both a steady-state and a small-signal analysis can be carried out to completely model the converter, achieving any desired steady-state characteristic and small-signal transfer function. The presented methodology is very intuitive and allows designers to achieve a natural understanding of the converter behavior. The methodology is illustrated with a HPF buck-boost converter operating in discontinuous conduction mode. Simulation and experimental results are provided to validate the proposed methodology.
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