Approximate 2-Degree-of-Freedom control for interleaved PFC boost converters

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Publication Details

Author list: Mochizuki Y., Adachi Y., Higuchi K., Jirasereeamornkul K., Chamnongthai K.

Publisher: Hindawi

Publication year: 2014

ISBN: 9781479929924

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905391453&doi=10.1109%2fECTICon.2014.6839713&partnerID=40&md5=1db79398566b387747ec21012e0bf348

Languages: English-Great Britain (EN-GB)

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Abstract

Making power factor and harmonics distortion of power supply better are needed. An interleaved boost converter is used for an active PFC (Power Factor Correction) for reducing ripples. In the PFC boost converter, if a duty ratio, a load resistance and an input voltage are changed, the dynamic characteristics are varied greatly. This is a prime reason of difficulty of controlling the PFC boost converter. In this paper, a robust digital controller of the interleaved PFC boost converter using an A2DOF (Approximate 2-Degree-Of-Freedom) method for keeping up high power factor and low harmonics against any load is proposed. Experimental studies using a microcontroller for the controller demonstrate that this type of digital controller is effective to improve power factor and to suppress the output voltage variation. ฉ 2014 IEEE.

Keywords

AC-DC power converters, Approximate 2-Degree-Of Freedom (A2DOF), Interleaved boost converter, Introduction (Heading 1), Microcontrollers