The Journal of Engineering | |
Two methods to control neutral-point voltage fluctuation for a hybrid VIENNA rectifier | |
You-Yun Wang1  Wei-Zhang Song2  Zhi-Hao Dai3  Wheeler Pat4  Nan Xie5  | |
[1] School of Automation and Information Engineering, Xi'State Key Laboratory of Large Electric Drive System and Equipment Technology , Tianshui, Gansu , People'an University of Technology , Xi'an, Shaanxi , People's Republic of China | |
关键词: single-switch three-phase boost rectifier; mathematical model; neutral-point balance control methods; neutral-point voltage fluctuation control; parallel system; VIENNA-type three level rectifier; hybrid VIENNA rectifier; zero-sequence component injection; hybrid rectifier system; DC-link capacitors; | |
DOI : 10.1049/joe.2018.0030 | |
学科分类:工程和技术(综合) | |
来源: IET | |
【 摘 要 】
This study presents two neutral-point balance control methods for a hybrid VIENNA rectifier, which is composed of a parallel system of a single-switch three-phase Boost rectifier and a VIENNA rectifier. Each rectifier in this topology processes part of the output power, therefore, a highly efficient and reliable performance is achieved in this rectifier system. However, the unbalance voltage of two DC-link capacitors in the VIENNA-type three level rectifier is also reflected in this hybrid rectifier. The fluctuation reason in neutral-point has been analysed using a mathematical model, meanwhile, the two methods with a hybrid algorithm and a simplified method based on zero-sequence component injection are proposed to control neutral-point fluctuation in this hybrid rectifier system. Furthermore, the performance comparison between these two methods is provided. The effectiveness of the two control methods has been verified using experimental results.
【 授权许可】
CC BY
【 预 览 】
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RO201910254950093ZK.pdf | 820KB | download |