双馈风电机组不对称故障穿越性能优化Optimation for Capability of Asymmetrical Fault Ride Through of DFIG
谭伦农;王肖;陈武晖;
摘要(Abstract):
低电压穿越是并网风电发展的关键技术,而撬棒保护电路是提高低电压穿越能力的有效方法之一。但是,撬棒电阻取值、切除时间以及直流母线稳定影响着风力机的低电压穿越性能。文中提出了根据双馈异步电机不对称故障负序电流的撬棒切除时刻判定依据和基于超级电容器的直流母线稳压方法,提高了双馈异步电机的故障穿越能力。在DIg SILENT平台上建立双馈异步电机实验模型,仿真结果验证了所提方法的合理性。
关键词(KeyWords): 双馈异步感应电机;撬棒电路;不对称故障;超级电容器
基金项目(Foundation): 国家自然科学基金项目(51277089)~~
作者(Author): 谭伦农;王肖;陈武晖;
Email:
DOI: 10.13335/j.1000-3673.pst.2014.12.037
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