Two methods for controlling three-time fundamental frequency neutral-point voltage oscillation in a hybrid VIENNA rectifier

Song, Wei-zhang; Dai, Zhi-hao; Xie, Nan; Wang, You-yun; Pat, Wheeler

Abstract

This study presents two methods of controlling neutral-point voltage oscillation in a hybrid VIENNA rectifier, which is composed of the parallel association of a three-phase single-switch Boost rectifier with a VIENNA-type rectifier. The neutral-point oscillation reason has been analysed with a mathematical model. Meanwhile, the two neutral-point control methods of a simplified method based on a zero-sequence component injection and a dual-carrier pulse-width modulation (PWM) method are proposed to control the voltage deviation of the split DC-link and three-time fundamental frequency neutral-point voltage fluctuation with a decrease from ±1.6 to ±1 V, respectively. Moreover, the significant oscillation in the neutral-point voltage caused by unbalanced loads or asymmetric capacitor parameters can also be effectively suppressed by using the dual-carrier PWM method. Furthermore, the performance comparison between these two methods is provided. The experimental results show that the system after being introduced the proposed two methods still exhibits a low-order input current harmonic such as second, third, and fourth harmonics as well as the input current total harmonic distortion is lower than the standard 5%.

Citation

Song, W., Dai, Z., Xie, N., Wang, Y., & Pat, W. (2019). Two methods for controlling three-time fundamental frequency neutral-point voltage oscillation in a hybrid VIENNA rectifier. IET Power Electronics, 12(4), 932-943. https://doi.org/10.1049/iet-pel.2018.5017

• Journal Article Type: Article
• Acceptance Date: Dec 15, 2018
• Online Publication Date: Jan 2, 2019
• Publication Date: Apr 11, 2019
• Deposit Date: Feb 4, 2019
• Publicly Available Date: Feb 4, 2019
• Journal: IET Power Electronics
• Electronic ISSN: 1755-4543
• Publisher: Institution of Engineering and Technology
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 4
• Pages: 932-943
• DOI: https://doi.org/10.1049/iet-pel.2018.5017
• Keywords: Electrical and electronic engineering
• Public URL: https://nottingham-repository.worktribe.com/output/1516479
• Publisher URL: https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5017
• Additional Information: This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.