Using oversampling techniques to extract ac machine saliency information
Using oversampling techniques to extract ac machine saliency information
复制标题
使用过采样技术提取交流机器显着性信息
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Wolbank
中科院分区：
文献类型：
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作者：
P. Nussbaumer;T. Wolbank
在零频率下控制没有速度或位置传感器的交流电机需要提取其固有或设计的显着性。这种提取目前与叠加到基波的注入高频或瞬态测试信号相关联。这些测试信号还影响噪声发射、最大逆变器输出电压和开关频率。已经提出了用于将测试信号注入到基波激励中的积分的不同方法，然而，在所有操作状态下的完全积分仍然是不可能的。本文提出了一种不需要测试信号就能提取图像显著性信息的方法，并进行了分析。它基于过采样技术，并使用开关瞬态期间电流传感器信号中出现的信息。不同的实现和它们的性能相比，在操作参数的变化。测量结果表明，应用所提出的技术，它是可能的，以获得必要的速度传感器控制的显着性信息。
Controlling an ac machine without speed or position sensor at zero frequency requires the extraction of its inherent or engineered saliencies. This extraction is currently linked to injected high frequency or transient test signals that are superposed to the fundamental wave. These test signals also affect noise emission, maximum inverter output voltage, and switching frequency. Different methods for an integration of the test signal injection into the fundamental wave excitation have been made, however a full integration in all operating states is still not possible. In this paper a method to extract the necessary saliency information without applying test signals is proposed and analyzed. It is based on oversampling techniques and uses the information that appears in current sensor signals during the switching transients. Different realizations are presented and their performance compared with respect to changes in the operating parameters. It is shown by measurement results that applying the proposed techniques it is possible to obtain the saliency information necessary for speed sensorless control.