High voltage ride-through of DFIG-based wind turbines
High voltage ride-through of DFIG-based wind turbines
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DOI：
10.1109/pes.2008.4596803
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发表时间：
2008-07
期刊：
影响因子：
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通讯作者：
C. Feltes;S. Engelhardt;J. Kretschmann;J. Fortmann;F. Koch;I. Erlich
中科院分区：
文献类型：
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作者：
C. Feltes;S. Engelhardt;J. Kretschmann;J. Fortmann;F. Koch;I. Erlich
随着欧洲大型海上风电场的迅速增加，风力机对暂时过电压的响应出现了一个新的问题。到目前为止，这个问题还不是讨论的焦点。大多数风力涡轮机使用带直流环节的电压型变流器。当电网电压超过一定限度时，流经网侧变流器的电流可能会反转，导致直流电压迅速增加。要处理这种情况，需要采取特殊的对策。本文对存在的问题进行了识别和概述，并提出了安全渡过过电压的可能措施。此外，还提出了限制过电压的有源电压控制结构。
With the rapid increase of large offshore wind farms in Europe, a new problem associated with the response of wind turbines to temporary overvoltages has arisen. This problem has not been a focus of discussion up to now. The majority of wind turbines use voltage source converters with a DC-link. When the grid voltage exceeds a certain limit the current flow through the line-side converter may reverse, resulting in a rapidly increasing DC voltage. To handle such situations, special countermeasures are required. This paper identifies and outlines the problem and recommends possible measures to ride through the overvoltage safely. Additionally, active voltage control structures to limit the overvoltages are proposed.