A rotor flux oriented scheme of induction machine based on voltage controller
A rotor flux oriented scheme of induction machine based on voltage controller
复制标题
基于电压控制器的感应电机转子磁链定向方案
DOI：
10.1109/iciea.2010.5516940
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Liwei Zhang
中科院分区：
文献类型：
--
作者：
Minglei Zhou;Ke;Chenchen Wang;X. You;Jian Wang;Liwei Zhang
异步电机间接矢量控制系统的性能容易受到参数失配和涡流的影响，导致定子电流的磁化分量与转子磁链矢量不一致，特别是在高速和弱磁范围内。为了实现精确的转子磁链定向，本文提出了一种基于电压控制器的新型控制策略。分析了感应电机相电压与磁场定向精度之间的关系，并采用电压控制器消除了磁场定向误差引起的d轴与转子磁链矢量夹角。仿真结果表明，该驱动系统在整个速度范围内的性能都得到了明显的改善。从而提高了控制系统对电机参数，特别是转子时间常数的鲁棒性。
The performance of the induction machine driving system with indirect vector control can easily be influenced by the effects of parameter mismatch and eddy current, which result that the magnetizing component of stator current can't align with the rotor flux vector, especially in the range of high speed and flux weakening. In order to achieve accurate rotor flux orientation, a novel control strategy based on the voltage controller is proposed in this paper. The relation between the phase voltage of the induction machine and the accuracy of the field orientation is analyzed and a voltage controller is used to eliminate the angle between the d-axis and the rotor flux vector due to the incorrect orientation. The simulation results show that the performance of the driving system in the whole speed region can be improved obviously. So, the robustness of the control system to the motor parameters, especially to the rotor time constant is raised highly.