Minimisation of power losses in PFC flyback converters operating in the continuous conduction mode

摘要: The wide use of PFC converters as DC supplies for electrical and electronic applications over the last few years, in order to comply with EMC directives, has highlighted issue efficiency improvement these converters. This paper presents a detailed study switching power loss behaviour under any line load conditions, case flyback operating continuous conduction mode (CCM). whole analysis is based on analytical calculation factor (which drastically affects losses) its variation relation nop-solution that minimises losses. As it will be proved theoretically, well by simulation experimental results, operation nop-area not only losses limits voltage stresses semiconductive elements, but also produces high power-factor regulation. These facts, along simplicity topology, establish CCM an optimal way achieve regulation, density.