Control and Fault Handling in a Modular Series-Connected Converter for a Transformerless 100 kV Low-Weight Offshore Wind Turbine

被引：50

作者：

Gjerde, Sverre S. ^{[1
]}

Olsen, Pal Keim ^{[2
]}

Ljokelsoy, Kjell ^{[3
]}

Undeland, Tore M. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Elect Power Engn, N-7491 Trondheim, Norway

[2] SmartMotor AS, N-7041 Trondheim, Norway

[3] Sintef Energy Res, N-7465 Trondheim, Norway

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2014年 / 50卷 / 02期

关键词：

AC-DC power conversion; fault tolerance; HVDC converters; power electronics; wind power generation;

D O I：

10.1109/TIA.2013.2272032

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

A transformerless wind power generator concept with the potential to achieve 100 kV dc output is proposed in this paper. In this paper, the modular ac/dc converter system suitable for such a high-voltage generator is analyzed for normal operation and fault-tolerant modes. The control synthesis is addressed, based on an assumption that the control can be designed modularly. Additionally, the investigated control system can facilitate fault-tolerant operation without changing the main structure. The robustness of the module control system is analyzed, and the limits for fault-tolerant operation are investigated. The theoretical studies are supported by transient analysis through simulations of the turbine in EMTDC/PSCAD. Finally, the generator/converter solution is verified experimentally. The laboratory results were obtained using a 45 kW prototype with three generator segments and three converter units in series.

引用

页码：1094 / 1105

页数：12

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