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独立运行无刷双馈发电机基于空间矢量调制的直接电压控制技术

, PP. 186-196

Keywords: 无刷双馈发电机,独立运行,直接电压控制,空间矢量调制,变速恒频

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Abstract:

这篇文章介绍了一种新颖的无刷双馈发电机变速恒频独立发电控制策略,基于其数学模型的分析,提出并详细讨论了基于空间矢量调制的直接电压控制策略.利用发电机系统的模型推导估计变换器输出电压的方法,跳过电流控制环节,保持直接控制的固有快速动态响应和鲁棒性,并引入空间矢量调制实现开关频率恒定,减小谐波和脉动,提出了一种基于锁相环的转子初始位置检测方法提高磁场定向精度.文章对独立运行和并网型直接控制及矢量控制给予了比较和评估.实验结果验证了所提控制策略的可行性和有效性.

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