中国电机工程学报2024，Vol.44Issue(5)：2027-2036,中插31,11.DOI:10.13334/j.0258-8013.pcsee.222767
基于坐标轴变换的九相永磁同步电机无位置传感器缺相容错控制
Sensorless Fault-tolerant Control of a Nine-phase Permanent Magnet Synchronous Motor Based on Axes Transformation Under Open-circuited Fault
摘要
Abstract
When open-circuit faults occur in the multi-phase permanent magnetic synchronous motor(PMSM),the current distortion and internal parameters variation of motor cause unpredictable disturbances to the system,which brings a challenge to the stable sensorless operation.To realize the online transition of fault tolerant control,this paper proposes a sensorless fault tolerant strategy of the multi-phase PMSM based on axes transformation.First,the reducing-order decoupled model of the postfault multi-phase PMSM is established using axes transformation.And postfault currents are refactored to guarantee the maximum torque output.The modeling approach applies to arbitrary open-circuit faults of the multi-phase PMSM.Also,the obtained mathematical model and current references would not vary with fault phase locations.On this basis,the modified sliding mode observer is established by the reducing-order decoupled model based on axes transformation,which improves the accuracy of rotor position estimation in the sensorless fault tolerant system.Finally,the effectiveness of the proposed control strategy is verified by open-circuit fault tolerant experiments with a 9 kW nine-phase PMSM.关键词
多相永磁同步电机/无位置传感器/坐标轴变换/容错控制Key words
multi-phase PMSM/position sensorless control/axes transformation/fault-tolerant control分类
信息技术与安全科学引用本文复制引用
刘晓明,郑晓钦,张旭东,王海峰,金石,吴新振..基于坐标轴变换的九相永磁同步电机无位置传感器缺相容错控制[J].中国电机工程学报,2024,44(5):2027-2036,中插31,11.基金项目
国家自然科学基金项目(52277058,U2106217,52037005) （52277058,U2106217,52037005）
特种电机与高压电器教育部重点实验室(沈阳工业大学)开放课题(KFKT202105). Project Supported by National Natural Science Foundation of China(52277058,U2106217,52037005) （沈阳工业大学）
Key Laboratory of Special Machine and High Voltage Apparatus(Shenyang University of Technology),Ministry of Education(KFKT202105). （Shenyang University of Technology）
