Approximate 2DOF digital controller for interleaved PFC boost converter

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Publication Details

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

Publisher: Springer Science Business Media

Publication year: 2014

Volume number: 282 LNEE

Start page: 135

End page: 144

Number of pages: 10

ISBN: 9783642419676

ISSN: 1876-1100

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958520433&doi=10.1007%2f978-3-642-41968-3_15&partnerID=40&md5=84037677c644a82089d925059278b31a

Languages: English-Great Britain (EN-GB)

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Abstract

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 cycle, 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, the robust digital controller using an A2DOF (Approximate 2-Degree-Of-Freedom) method for suppressing the variation of output voltage in dynamic load response with high power factor and low harmonic is proposed. Experimental studies using a micro-processor for controller demonstrate that this type of digital controller is effective to improve power factor and to suppress output voltage variation. ฉ Springer-Verlag Berlin Heidelberg 2014.

Keywords

Approximate 2DOF, Boost converter, Digital robust control, micro-processor, Power factor correction (PFC)