Improving the rotor position estimation in permanent-magnet synchronous machines with a low-resolution position sensor
Improving the rotor position estimation in permanent-magnet synchronous machines with a low-resolution position sensor
复制标题
使用低分辨率位置传感器改进永磁同步电机中的转子位置估计
DOI：
10.1109/icelmach.2010.5608255
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Melkebeek
中科院分区：
文献类型：
--
作者：
H. Vansompel;F. De Belie;J. Melkebeek
提出了一种基于低分辨率位置传感器的转子位置估计方法。由于交流永磁同步电机的矢量控制需要具有足够高的分辨率的转子位置，低分辨率的传感器信号被转换成空间量化的旋转矢量，并且基于该矢量，矢量跟踪观测器计算相应的高分辨率转子位置。一个基本的矢量跟踪观测器拓扑结构的实现进行了讨论。为了减少剩余的位置估计误差，引入了两个改进：速度相关的观测器增益和减少谐波含量的矢量跟踪观测器的输入矢量。这些导致足够低的位置估计误差。通过仿真和硬件实验研究了矢量跟踪观测器在稳态和瞬态下的性能。
In this paper, a rotor position estimation based on a low-resolution position sensor is proposed. As vector control of an ac permanent-magnet synchronous machine requires the rotor position with sufficiently high resolution, the low-resolution sensor signal is transformed into a spatially quantized rotating vector and based on this vector, a vector-tracking observer calculates the corresponding high-resolution rotor position. The implementation of a basic vector-tracking observer topology is discussed. To reduce the remaining position estimation errors, two improvements are introduced: speed dependent observer gains and a reduction of the harmonic content in the input vector of the vector-tracking observer. These result in a sufficiently low position estimation error. The performance of the vectortracking observer is studied in steady state and in transient state by simulation as well as experiments on a hardware setup.