Bridgeless interleaved boost PFC converter with variable duty cycle control

• Autor(a) principal: E Silva, Luciano S.C. [UNESP]
• Data de Publicação: 2011
• Outros Autores: De Seixas, Falcondes J.M. [UNESP], De Brito, Moacyr A.G. [UNESP]
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1109/COBEP.2011.6085238; http://hdl.handle.net/11449/73096
• topic: Bridgeless; Interleaved; Power Factor Correction; Variable Duty Cycle Control; Conduction loss; Discontinuous conduction mode; Duty cycle control; EMI filters; High load; High power factor; Input current; Interleaved boost; Interleaving technique; Low order harmonics; Output voltage regulation; Output voltages; Power factor corrections; Power factors; Supply voltage variation; Electric power factor; Power electronics; Power quality; Semiconductor devices; Voltage regulators; DC-DC converters

This paper proposes a bridgeless boost interleaved PFC (power factor correction) converter with variable duty cycle control. The application of bridgeless technique causes reduction of conduction losses, while the interleaving technique of converters cells allows division of efforts in semiconductor devices and reduction of weight and volume of the input EMI filter. The use of variable duty cycle control has the functions of regulating the output voltage and eliminating the low order harmonic components that appears in the input current of the common interleaved power factor converters working in Discontinuous Conduction Mode (DCM). The simulation results of the proposed converter presented high power factor and a good transient response in relation to the output voltage regulation in presence of high load variations and supply voltage variations. © 2011 IEEE.