相间电感器在直驱风力发电机组并联变流器中的应用

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-06-02 DOI:10.1109/IPEMC.2012.6259029

Rui Li, Huiyu Zhu, Dianguo Xu

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引用次数: 5

摘要

为了提高直驱风力发电系统的额定功率，本文提出了采用带间相电感的发电机侧变流器并联运行的方案。本文推导了解耦等效电路和零序循环电流(ZSCC)模型。阐述了间相电感抑制ZSCC的基本机理。然后在同步旋转坐标系下设计了系统的控制策略。有效地抑制了ZSCCs，克服了电流的差异和畸变。从而提高了系统的可靠性和效率。最后，对额定功率为1.5 MW的发电机侧并联变流器进行了仿真，验证了上述分析的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Application of interphase inductors for parallel generator-side converters in direct-drive wind turbine system

To improve the power rating of direct-drive wind turbine system, this paper proposes the parallel operation of two generator-side converters with interphase inductors. In the paper, the decoupling equivalent circuit and the zero-sequence circulating-current (ZSCC) models are derived. The fundamental mechanism of ZSCC suppression with interphase inductors is illustrated. Then the control strategy of the system is designed in the synchronous rotating coordinates. The ZSCCs are suppressed well and the discrepancy and distortion of currents are overcome. Therefore, the reliability and efficiency of the system are improved. Finally, the parallel generator-side converters with the power rating of 1.5 MW are simulated, which verifies the validity of the above analysis.

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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