Initial Rotor Position Estimation and Sensorless Control of SRM Based on Coordinate Transformation
Initial Rotor Position Estimation and Sensorless Control of SRM Based on Coordinate Transformation
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基于坐标变换的SRM转子初始位置估计与无传感器控制
DOI：
10.1109/tim.2014.2364699
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发表时间：
2015-04
影响因子：
5.6
通讯作者：
Deng, Zhiquan
中科院分区：
文献类型：
--
作者：
Cai, Jun;Deng, Zhiquan
转子位置的准确估计对于开关磁阻电机驱动器的可靠启动和无传感器控制至关重要。本文提出了一系列基于相电感矢量坐标变换的位置估计方法。利用旋转坐标变换和坐标分量归一化，可以有效地消除归一化后的三相坐标分量中的直流分量和高次谐波。根据坐标变换原理，空间矢量的转速与三相电感的角频率同步。因此，通过α-β变换，可以估计空间矢量的同步旋转角度和转子位置。由于旋转角度可以是任意的，因此可以构造另一个坐标系，并找到与前一个坐标系中的坐标分量垂直的归一化坐标分量之一。基于正交坐标变换，还可以估计转子位置。已实施的验证实验。所提出的方法有效地解决了初始转子位置估计的挑战，也适用于在轻载条件下的可靠的无传感器启动。然而，这些方法不适用于高负荷驱动运行条件。为了解决这一问题，本文提出了一种基于相电流斜率差比较法和基于坐标变换法相结合的方法。实验结果验证了该方法的有效性。此外，所提出的方法不需要额外的硬件和复杂的计算，这简化了实现。
Accurate estimation of the rotor position is essential for reliable start-up and sensorless control of switched reluctance motor drives. In this paper, a series of position estimation schemes based on phase inductance vector coordinate transformations are proposed. Using the rotating coordinate transformation and coordinate components normalization, the dc component and higher order harmonics of the normalized three-phase coordinate components can be eliminated effectively. According to the coordinate transformation theory, the rotating speed of the space vector is synchronized with the angular frequency of the three-phase inductance. Thus, through alpha-beta transformation, the synchronous rotating angle of the space vector and the rotor position can be estimated. Since the rotating angle can be arbitrary, it is possible to construct another coordinate system and find one of its normalized coordinate components that is perpendicular to the one in the former coordinate system. Based on the orthogonal coordinate transformation, the rotor position can also be estimated. Experiments have been implemented for verification. The proposed methods effectively solve the challenges in initial rotor position estimation and are also suitable for reliable sensorless starting under light-load conditions. However, these methods are not suitable for high-load driving-running conditions. To solve this problem, a combination of the phase current slope difference comparison-based method and the coordinate transformation-based method is developed in this paper. The experimental results verified the validity of this method. In addition, the proposed methods do not require additional hardware and complex computation, which simplifies the implementation.
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基于相电感斜率的开关磁阻电机无位置传感器控制
影响因子：
1.4
作者：
Jun Cai,;Zhiquan Deng
通讯作者：
Zhiquan Deng
影响因子：
6.7
作者：
Jun Cai;Z. Deng
通讯作者：
Jun Cai;Z. Deng
DOI：
--
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Deng Zhiquan
通讯作者：
Deng Zhiquan
DOI：
10.1109/iecon.2013.6699572
发表时间：
2013-11
期刊：
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
影响因子：
--
作者：
Jun Cai;Qing-Chang Zhong;Z. Deng
通讯作者：
Jun Cai;Qing-Chang Zhong;Z. Deng
DOI：
10.1109/tim.2009.2017154
发表时间：
2009-06
影响因子：
5.6
作者：
K. Lu;Peter Omand Rasmussen;Andrew Ewen Ritchie
通讯作者：
K. Lu;Peter Omand Rasmussen;Andrew Ewen Ritchie