Robust Digital Control for Interleaved PFC Boost Converter Using Approximate 2DOF

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Yuki Satake
Hiroyuki Furuya
Yohei Mochizuki
Yuji Fukaishi
Kohji Higuchi
Kosin Chamnongthai

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 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.

Article Details

How to Cite
[1]
Y. Satake, H. Furuya, Y. Mochizuki, Y. Fukaishi, K. Higuchi, and K. Chamnongthai, “Robust Digital Control for Interleaved PFC Boost Converter Using Approximate 2DOF”, ECTI-CIT Transactions, vol. 8, no. 2, pp. 187–194, Apr. 2016.
Section
Artificial Intelligence and Machine Learning (AI)