Transformer-less five-level high-voltage full-scale converter with a self-balance auxiliary circuit for 10MW wind turbines

被引：5

作者：

Zeng, Xiang-jun ^{[1
]}

Wang, Hang ^{[1
]}

Zhang, Xiao ^{[1
]}

Gong, De-ling ^{[1
]}

Yang, Xu ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Elect Engn, 28 Xianning West Rd, Xian, Shaanxi, Peoples R China

来源：

IET POWER ELECTRONICS | 2017年 / 10卷 / 14期

关键词：

velocity control; variable structure systems; power grids; power transformers; rectifiers; invertors; wind turbines; self-balance auxiliary circuit; transformer-less five-level high-voltage full-scale converter; unidirectional sinusoidal 5L-Vienna rectifier; variable-speed controller; generator side; 5L neutral-point-clamped inverter; 5L NPC inverter; grid-integrated converter; intrinsic dc-link NP imbalance issue; DC-link self-balance auxiliary circuit; rectifier modulation technology; control strategy; power; 10; MW; SPACE-VECTOR MODULATION; INVERTER;

D O I：

10.1049/iet-pel.2017.0007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel transformer-less five-level (5L) high-voltage full-scale converter is proposed for 10MW wind turbines. In this scheme, a unidirectional sinusoidal 5L-Vienna rectifier is used as a variable-speed controller at the generator side, and a conventional 5L neutral-point-clamped (NPC) inverter is used as the grid-integrated converter. The intrinsic dc-link NP imbalance issue is solved only by a proposed dc-link self-balance auxiliary circuit. This study focuses on the modulation technology of the rectifier and the operational principle of the auxiliary circuit. Furthermore, it presents a control strategy for the proposed converter. Finally, the small-scale experiments are carried out to verify the analysis.

引用

页码：1841 / 1851

页数：11

共 2 条

[1] TRANSFORMER-LESS FIVE-LEVEL DIODE-CLAMPED CONVERTER BASED ACTIVE POWER FILTER WITH AUXILIARY BALANCING CIRCUIT
Gauthier, Sebastien
Okou, Francis
[J]. 2010 23RD CANADIAN CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING (CCECE), 2010,
[2] Techno-economic evaluation of five-level nested neutral point clamped converter topology for transformer-less connection of high-power wind energy conversion systems
Ajayi-obe, Akinola A.
Khan, Mohamed A.
Barendse, Paul S.
[J]. JOURNAL OF ENERGY IN SOUTHERN AFRICA, 2019, 30 (03) : 33 - 43

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