Open AccessRobust Digital Control for Interleaved PFC Boost Converter Using Approximate 2DOF
Author(s) -
Yuki Satake,
Hiroyuki Furuya,
Yohei Mochizuki,
Yuji Fukaishi,
Kohji Higuchi,
Kosin Chamgthai
Publication year - 1970
Publication title -
ecti transactions on computer and information technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.132
H-Index - 2
ISSN - 2286-9131
DOI - 10.37936/ecti-cit.201482.54401
Subject(s) - power factor , total harmonic distortion , boost converter , control theory (sociology) , buck–boost converter , duty cycle , buck converter , controller (irrigation) , digital control , forward converter , ćuk converter , voltage , flyback converter , computer science , electronic engineering , engineering , electrical engineering , control (management) , agronomy , artificial intelligence , biology
In recent years, improving of power factor and reducing harmonic distortion in electrical instruments are needed. In general, a current conduction mode boost converter is used for active PFC (Power Factor Correction). In a PFC boost converter, if a duty ratio, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is the prime reason of difficulty of controlling the interleaved PFC boost converter. In this paper, a robust digital controller for suppressing the change of step response characteristics and variation of output voltage at a DC-DC buck converter load sudden change with high power factor and low harmonic is proposed. Experimental studies using a micro-processor for controller demonstrate that the proposed digital controller is effective to improve power factor and to suppress output voltage variation.