Title :
Analysis of a soft-switched PFC boost converter using analog and digital control circuits
Author :
Barreto, Luiz Henrique Silva Colado ; Sebastião, Marcelo Gouveia ; De Freitas, Luiz Carlos ; Coelho, Ernane Antônio Alves ; Farias, Valdeir José ; Vieira, João Batista, Jr.
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Fed. do Ceara, Fortaleza, Brazil
Abstract :
This work presents a comparison between analog and digital (PIC16c73a) control types applied to the boost converter with a nondissipative snubber. Both control types use the bang-bang hysteresis current waveshaping control technique in order to achieve a quasi-unity power factor. The analog control applied presented a high power factor (0.998), high efficiency (92.87%), and low harmonic distortion [total harmonic distortion of current (THDI =2.84% and total harmonic distortion of current (THDV) =2.83%]. The digital control presented a high power factor (0.990), high efficiency (92.46%), and low harmonic distortion (THDI=5.09% and THDV=2.84%).
Keywords :
AC-DC power convertors; bang-bang control; digital control; electric current control; harmonic distortion; hysteresis; power conversion harmonics; power factor correction; snubbers; switching convertors; 92.87 percent; AC-DC power conversion; THD; analog control circuit; bang-bang hysteresis current waveshaping control technique; digital control circuit; harmonic distortion; nondissipative snubber; quasiunity power factor; soft-switched PFC boost converter; Analog-digital conversion; Circuits; Digital control; Harmonic distortion; Hysteresis; Microprocessors; Reactive power; Snubbers; Switches; Zero current switching;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2004.837909
