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

Content Provider	IET Digital Library
Author	Song, Wei zhang Dai, Zhi hao Xie, Nan Wang, You yun Wheeler, Patrick
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%.
Starting Page	932
Ending Page	943
Page Count	12
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 4, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5017
Journal	IET Power Electronics
Publisher Date	2019-01-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Dual-carrier Pulse-width Modulation Method Dual-carrier PWM Method Harmonic Distortion Hybrid VIENNA Rectifier Input Current Total Harmonic Distortion Neutral-point Control Method Power Conversion Harmonics Power Electronics Power Supply PWM Rectifier Rectifying Circuit Single-switch Boost Rectifier Split DC-link Supervisory Circuit Switching Converter Three-time Fundamental Frequency Neutral-point Voltage Fluctuation Three-time Fundamental Frequency Neutral-point Voltage Oscillation Voltage Control Zero-sequence Component Injection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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