Transformer‐less five‐level high‐voltage full‐scale converter with a self‐balance auxiliary circuit for 10 MW wind turbines
| Autor: | Xiao Zhang, De-ling Gong, Xiang-jun Zeng, Hang Wang, Xu Yang |
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| Rok vydání: | 2017 |
| Předmět: |
Operational principle
Wind power business.industry Computer science 020208 electrical & electronic engineering Full scale High voltage 02 engineering and technology law.invention Auxiliary circuit law Control theory 0202 electrical engineering electronic engineering information engineering Inverter 020201 artificial intelligence & image processing Electrical and Electronic Engineering business Transformer |
| Zdroj: | IET Power Electronics. 10:1841-1851 |
| ISSN: | 1755-4543 |
| DOI: | 10.1049/iet-pel.2017.0007 |
| Popis: | A novel transformer-less five-level (5L) high-voltage full-scale converter is proposed for 10 MW 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. |
| Databáze: | OpenAIRE |
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