非对称六相永磁同步电机的故障容错控制  

Fault Tolerant Control of Asymmetric Six-Phase Permanent Magnet Synchronous Motor

作　　者：刘林阴[1] 李杰[1] LIU Lin-yin;LI Jie(Zhengzhou College of Science ＆ Technology,Zhengzhou 450064,Chin)

机构地区：[1]郑州科技学院,郑州450064

出　　处：《微特电机》2018年第5期52-57,61,共7页Small & Special Electrical Machines

基　　金：河南省科技厅科技攻关项目(172102210114)

摘　　要：针对由非对称六相永磁同步电机(PMSM)和T型中点钳位型(T-NPC)三电平变频器构成的电力传动系统的可靠运行问题,提出了一种新型复合容错控制策略。结合简化空间矢量调制(SVM)和直接转矩控制(DTC)形成了非对称六相PMSM的SVM-DTC控制方案,并设计了谐波电流抑制单元,同时获得了较好的电流谐波性能和快速动态响应。通过解析分析开路故障下各相定子磁链与定子电压之间的关系,设计了SVM-DTC方案下的开路故障容错控制策略。通过样机实验,验证了控制方案的效果。bAiming at the reliable operation problem of power transmission system composed of asymmetric six-phase permanent magnet synchronous motor（ PMSM） and T-type neutral-point-clamping（ T-NPC） three-level inverter,a new composite fault-tolerant control strategy was proposed. SVM-DTC control scheme of asymmetric six-phase PMSM was formed by combining simplified space vector modulation（ SVM） and direct torque control（ DTC）,and a harmonic current suppression unit was designed at the same time,so better current harmonic performance and fast dynamic response are obtained. Based on the analysis of the relationship between the stator flux and the stator voltage in the open-circuit fault,the open-circuit fault-tolerant control method under the SVM-DTC scheme was obtained. The effect of the new control scheme is verified by PMSM drive system prototype tests.

关 键 词：非对称 六相永磁同步电机 三电平变频器 故障容错控制 直接转矩控制 

分 类 号：TM351[电气工程—电机]