NDLI: Full-bridge single-stage PFC with reduced DC bus capacitor and improved light load operation as a solution for modern SMPS

Content Provider	IEEE Xplore Digital Library
Author	Ribeiro, H. Borges, B. Ferreira, C.
Copyright Year	2013
Description	Author affiliation: Inst. de Telecomun., Lisbon, Portugal (Ribeiro, H.; Ferreira, C.) \|\| Inst. de Telecomun., Univ. Tec. de Lisboa, Lisbon, Portugal (Borges, B.)
Abstract	Modern Single-Stage Switch Mode Power Supplies (namely Full-Bridge topologies for high power applications >500W), allows to regulate the output voltage and the input current, achieving a sinusoidal waveform by using only the four bridge transistors. However, these solutions still need to be optimized in order to become an interesting and attractive solution for modern Switch Mode Power Supplies with PFC function. One of the most important improvements needed is the downsizing and the cost reduction associated to the DC bus capacitor $(C_{F}$ - filtering capacitor). Nevertheless, this action introduces several complex issues in the regulation of the input current and also high output voltage ripple. The proposed paper describes a new process to reduce the $C_{F}$ value solving the identified issues. Firstly it is proved that it is possible to use a reduced capacitance/watt ratio, lower than the one that is typically used in commercial applications 0.5μF/W, while maintaining the accurate regulation of the input current. The output voltage ripple issues are solved using a modified One Cycle Control, OCC circuit. The concepts and solutions developed will be proved based on experimental results in an optimized FBSS topology that uses a Free Wheeling Capacitor, FWC, circuit in order to improve the low power operation.
Starting Page	3413
Ending Page	3418
File Size	1245742
Page Count	6
File Format	PDF
ISBN	9781479903368
DOI	10.1109/ECCE.2013.6647149
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reactive power Capacitors Bridge circuits Topology Voltage control Inductors Equations
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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