A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier

Song, Wei-Zhang and Xing, Fei-Xiong and Yang, Hua and Empringham, Lee and De Lillo, Liliana and Wheeler, Patrick and Li, Jie and Zhong, Yan-Ru (2015) A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4 (2). pp. 468-480. ISSN 2168-6785

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Abstract

This paper presents a solution to the control of the three times fundamental frequency fluctuation of the neutral-point in a VIENNA rectifier. A hybrid method combining a dynamic adjustment factor with a voltage deviation control of the split DC-link is proposed. The fluctuation of the neutral-point has been analyzed and the reason for the three times fundamental frequency fluctuation has been described using a mathematic model. As well as minimizing the three times fundamental frequency component in the neutral-point voltage the proposed control method also provides immunity to the influence of changes in the capacitor voltage. Furthermore, significant fluctuation in the neutral-point voltage caused by asymmetric capacitor parameters or unbalanced load can be effectively reduced by using a hybrid control method combining additional adjustment coefficients. The feasibility and effectiveness of the proposed strategy has been verified through the presented simulation and experimental results.

Item Type: Article
Additional Information: c2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Keywords: Capacitors, Fluctuations, Rectifiers, Mathematical model, Voltage control, Harmonic analysis, Switches
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
Identification Number: 10.1109/JESTPE.2015.2503125
Depositing User: Burns, Rebecca
Date Deposited: 21 Sep 2017 08:11
Last Modified: 14 Oct 2017 08:32
URI: http://eprints.nottingham.ac.uk/id/eprint/46548

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