Analytical Study of Grid-Fault Response of Wind Turbine Doubly Fed Induction Generator
Analytical Study of Grid-Fault Response of Wind Turbine Doubly Fed Induction Generator
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DOI：
10.1109/tec.2010.2049494
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发表时间：
2010-11
影响因子：
4.9
通讯作者：
G. Pannell;D. Atkinson;B. Zahawi
中科院分区：
文献类型：
--
作者：
G. Pannell;D. Atkinson;B. Zahawi
并网型风力涡轮机双馈感应发电机（DFIG）对电源电压的骤降（所谓的“电网故障”）敏感。故障穿越系统必须设计成能够管理定子和转子电路中的大的和潜在危险的故障电流。然而，在当代文献中，DFIG故障响应仅被部分或概括地处理。本文详细分析了双馈涡轮机的电网故障响应。通过磁链响应的描述和后来开发的广义DFIG机方程的分析解决方案故障条件下运行的电流的衰减分量的频率偏离纯直流和转子速度由于磁阻力效应的机器的物理行为。使用7.5千瓦的测试设备进行实验验证和评估的分析。
Grid-connected wind turbine doubly fed induction generators (DFIGs) are sensitive to dips in supply voltage, so-called “grid faults”. Fault ride through systems must be designed to manage the large and potentially dangerous fault currents in both stator and rotor circuits. However, DFIG fault response has been only partially or summarily treated in contemporary literature. This paper presents a detailed analytical analysis of wind turbine DFIG grid-fault response. The physical behavior of the machine is presented through a description of the flux-linkage response and later developed with analytical solutions of the generalized DFIG machine equations operating under fault conditions showing that the frequencies of the decay components of current deviate from pure dc and rotor speed due to magnetic drag effects. The analysis is experimentally verified and evaluated using a 7.5-kW test facility.