Controller design for forward converter with PFC: systematic approach to nonlinear controller design

摘要

A forward converter control system, which has a power factor corrector, is designed via a systematic nonlinear controller design approach. A forward converter part (FC-part) and a power factor corrector part (PFC-part) are treated as an independent converter respectively when a controller is constructed. For this purpose, a steady state of each converter needs to be previously obtained. A variation from the steady point is treated as an uncertainty, which badly influences a controller. Computer simulations show that the controller works very well against the uncertainty.