Sensorless Control of Switched Reluctance Motor Based on Phase Inductance Vectors
Sensorless Control of Switched Reluctance Motor Based on Phase Inductance Vectors
复制标题
DOI：
10.1109/tpel.2011.2179065
复制
发表时间：
2012-07
影响因子：
6.7
通讯作者：
Jun Cai;Z. Deng
中科院分区：
文献类型：
--
作者：
Jun Cai;Z. Deng
本文提出了一种基于开关磁阻电机（SRM）相电感矢量的无传感器控制方法。为了实现该方法，进行了以下操作。首先，基于脉冲注入技术，提出了一种称为相电流斜率差的新方法来识别每相的全周期相电感。其次，将相电感视为具有固定相位差的矢量，并且合成矢量随着转子位置的变化而旋转。结合复合向量正交分解方法和新的电感分区方法，可以估计转子位置。该方法可以实现SRM从静止启动到高速运行的无传感器控制，且易于实现。不需要额外的硬件或复杂的计算，也不需要有关 SRM 磁特性的先验知识。为了验证所提出的无传感器方案的性能，进行了以下实验：1）估计静止时的初始转子位置和旋转轴条件，以进行无传感器启动控制； 2）在不同参考速度下估计转子位置和转速，进行无传感器速度闭环控制，动态性能得到充分验证。
A new sensorless control method based on phase inductance vectors of switched reluctance motor (SRM) is presented in this paper. To implement this method, the following was done. First, based on the pulse injection technique, a new method called phase current slope difference is proposed for identifying the full-cycle phase inductance of each phase. Second, the phase inductances are considered as vectors with fixed phase difference and the composed vector is rotated with the varied rotor position. Combining the composed vector orthogonal decomposition method and a new inductance subregional method, the rotor position can be estimated. This method can realize sensorless control of SRM from starting up at standstill to high-speed operation and is quite easy to implement. No additional hardware or complex computation is required and no a priori knowledge on magnetic characteristics of SRM is necessary. To verify the performance of the proposed sensorless scheme, the following experiments have been performed: 1) the initial rotor position at standstill and rotating shaft conditions are estimated for sensorless startup control; and 2) the rotor position and rotational speed are estimated at different reference speeds for sensorless speed closed-loop control and the dynamic performance is fully validated.