Design and Analysis of a Repetitive Current Controller for a Single-Phase Bridgeless SEPIC PFC Converter

Jinwoo Kim, Sanghun Han, Wontae Cho, Younghoon Cho and Hyunsoo Koh
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Jinwoo Kim: Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea
Sanghun Han: Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea
Wontae Cho: Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea
Younghoon Cho: Department of Electrical Engineering, Konkuk University, Seoul 05029, Korea
Hyunsoo Koh: Texas Instruments, 12500 TI Boulevard, Dallas, TX 75243, USA

Energies, 2018, vol. 12, issue 1, 1-17

Abstract: This paper studies a repetitive controller design scheme for a bridgeless single-ended primary inductor converter (SEPIC) power factor correction (PFC) converter to mitigate input current distortions. A small signal modeling of the converter is performed by a fifth-order model. Since the fifth-order model is complex to be applied in designing a current controller, the model is approximated to a third-order model. Using the third-order model, the repetitive controller is designed to reduce the input current distortion. Then, the stability of the repetitive controller is verified with an error transfer function. The proposed controller performance is validated by simulation, and the experiment results show that the input current total harmonic distortion (THD) is improved by applying the proposed controller for an 800 W bridgeless SEPIC PFC converter prototype.

Keywords: AC-DC converters; bridgeless SEPIC PFC converter; repetitive controller; current distortion; current controller design (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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