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

Song, Wei-Zhang; Xing, Fei-Xiong; Yang, Hua; Empringham, Lee; De Lillo, Liliana; Wheeler, Patrick; Li, Jie; Zhong, Yan-Ru

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.

Citation

Song, W., Xing, F., Yang, H., Empringham, L., De Lillo, L., Wheeler, P., …Zhong, Y. (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), https://doi.org/10.1109/JESTPE.2015.2503125

• Journal Article Type: Article
• Acceptance Date: Oct 31, 2015
• Publication Date: Nov 23, 2015
• Deposit Date: Sep 21, 2017
• Publicly Available Date: Sep 21, 2017
• Journal: IEEE Journal of Emerging and Selected Topics in Power Electronics
• Electronic ISSN: 2168-6785
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 4
• Issue: 2
• DOI: https://doi.org/10.1109/JESTPE.2015.2503125
• Keywords: Capacitors, Fluctuations, Rectifiers, Mathematical model, Voltage control, Harmonic analysis, Switches
• Public URL: https://nottingham-repository.worktribe.com/output/765665
• Publisher URL: http://ieeexplore.ieee.org/document/7335558/
• 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.