摘要
为了实现六相永磁同步电机缺相后的矢量控制,根据定子磁势不变的原则,以铜耗最小为目标,对双Y移相30°六相永磁同步电机缺一相绕组的电流进行优化求解。根据所求得的优化电流,获得缺相后的变换矩阵,从而建立缺一相的六相永磁同步电机旋转坐标系下数学模型,并由此提出缺相后的解耦矢量控制方法。分析漏感和空间谐波对该容错控制下转矩脉动的影响,提出相应的抑制方法。实验验证了六相永磁同步电机容错控制算法的正确性,其有效减少了缺相后的转矩脉动,且具有较好的动态性能,提高了驱动系统的可靠性。
In order to realize vector control of the six-phase permanent magnet synchronous machine(PMSM) with one phase failure,optimized currents of the six-phase PMSM containing double Y-connected phase-shift 30° windings with one phase failure are found based on the principle of the constant stator magnetic motive force concerning minimum copper loss.According to the optimized currents,the transformation matrix has been got to establish the mathematical model of the six-phase PMSM with one phase failure in the rotating coordinates.And thus the decoupling vector control method is proposed with one phase failure.Besides,the leakage inductance and the spatial harmonic which affect torque ripple in the fault-tolerant control are analyzed and the corresponding inhibitive method is provided.Experiments are carried out to verify the correctness of the fault-tolerant control for six-phase PMSM.The proposed fault-tolerant control method can reduce the torque ripple effectively and have a better dynamic performance,which ensures the reliability of the drive system.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第5期49-58,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金重点项目(61034007)资助
关键词
六相永磁同步电机
容错控制
优化电流
缺相
转矩脉动
Six-phase PMSM
fault-tolerant control
optimized currents
phase failure
torque ripple
