故障下DFIG机电能量平衡的可行性分析

来源 :中国电工技术学会电力电子学会第十四届学术年会 | 被引量 : 0次 | 上传用户：winterzeng

【摘要】

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【作者】

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朱东海王珂邹旭东雷加智康勇

【机构】

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强电磁工程与新技术国家重点实验室(华中科技大学),武汉 430074 国网秦皇岛电力公司,秦皇岛

【出处】

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中国电工技术学会电力电子学会第十四届学术年会

【发表日期】

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2014年6期

【关键词】

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双馈感应发电机电网故障机电能量平衡可行性分析

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论文部分内容阅读

对于电网故障下双馈感应发电机(doubly fed induction generator,DFIG)机电能量失衡即风力机输入能量和双馈电机输出能量失衡的问题,现有文献鲜少涉及.双馈电机输出能量和机侧变换器的励磁控制策略有关,本文首先对现存几种励磁控制策略下双馈电机输出有功功率的情况进行分析,结果表明现有励磁控制策略下双馈电机无法达到机电能量平衡.进而从任意频率、幅值、相位转子电流入手,探讨转子电流三要素和双馈电机输出有功功率之间的关系,推导了使双馈电机达到能量平衡所需的转子电流指令.最后,基于MATLAB/SIMULINK搭建了系统的仿真模型,验证了以上推导过程的正确性.

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故障下DFIG机电能量平衡的可行性分析

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