Power quality enhancement of a wind-turbine generator under variable wind speeds using matrix converter
Power quality enhancement of a wind-turbine generator under variable wind speeds using matrix converter
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使用矩阵变换器提高变风速下风力发电机的电能质量
DOI：
10.1109/pesc.2008.4592197
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Lasseter
中科院分区：
文献类型：
--
作者：
H. Nikkhajoei;R. Lasseter
本文提出了一种直接交流-交流矩阵变换器，作为直流电压源变换器的替代方案，用于风力发电机感应发电机。矩阵变换器通过其同步速度提供了发电机速度的平稳过渡，因此，风速的变化可以由发电机以平稳的方式进行。因此，发电机为负载提供了高功率质量，尽管风速变化。此外，变流器使发电机能够在其同步速度附近运行，从而使整个风转换系统的效率更高。研究了矩阵变换器在风力发电机组系统中的开关策略。基于整体风能转换系统的动态模型，设计了矩阵变换器的控制器。对基于矩阵变换器的风能转换系统在变风速条件下的动态性能进行了评价。
This paper proposes the use of a direct AC-AC matrix converter, as an alternative to the DC-link voltage-sourced converter, for wind-turbine induction generators. The matrix converter provides a smooth transition of the generator speed through its synchronous speed and therefore, variations of the wind speed can be followed by the generator in a smooth fashion. Thus, the generator provides a high power quality for the load, in spite of wind speed variations. Furthermore, the converter enables the generator to operate around its synchronous speed where the efficiency of overall wind conversion system is higher. A switching strategy is developed for the matrix converter to operate in a wind-turbine induction generator system. Based on a dynamic model of the overall wind energy conversion system, a controller for the matrix converter is designed. Dynamic performance of the matrix converter based wind energy conversion system operating under variable wind speeds is evaluated.