摘要
准确地对驱动器开路故障进行识别与诊断能够有效防止故障进一步恶化所引起的严重事故,也是实施恰当容错控制策略的先决条件。驱动器的开路故障类型包含单个功率开关管故障、多个功率开关管故障以及功率开关管和相的混合故障,提出能够识别上述所有类型全开路故障模式的诊断方法。首先,为了便于模拟多类型的故障场景并提高理论模型的计算精度,构建能够计及诸多非理想因素和电机与驱动器之间相互影响关系的直接耦合分析模型,并通过实验验证了该模型的准确性和有效性。其次,通过矢量空间解耦中的子平面电流和绕组相电流分别提取故障因子和辅助故障因子,提出基于2种故障因子的诊断方法,并明晰2种故障因子的阈值范围和使用方法。最后,依托验证后的直接耦合分析模型,对6种不同类别的开路故障进行识别和诊断,证明所提方法的有效性。
Accurate identification and diagnosis of open-circuit faults in the driver can effectively prevent serious accidents caused by further deterioration of faults and is also a prerequisite for implementing prop-er fault-tolerant control strategies.The types of open-circuit faults in the driver include the single power switch fault,multiple power switches fault,and mixed fault of power switch and phase.The diagnosis method of fully open-circuit fault modes that can identify all the above types was proposed.Firstly,a di-rect coupling analysis model was constructed that can consider many non-ideal factors and the interaction between the motor and the driver to facilitate the simulation of multiple fault scenarios and improve calcu-lation precision of the theoretical model,and accuracy and effectiveness of the model was verified through experiments.Secondly,the fault factors and auxiliary fault factors were extracted from the sub-frame currents in vector space decomposition and winding phase currents,and the diagnosis method based on the two fault factors was proposed,and the threshold range and usage of the two fault factors were clarified.Finally,six different types of open-circuit faults were identified and diagnosed,by relying on the valida-ted direct coupling analysis model,proving the validity of the proposed method.
作者
汤昊岳
李伟力
陈睿
TANG Haoyue;LI Weii;CHEN Rui(School of Electric Engineering,Beijing Jiaotong University,Beijing 100044,China;School of Electric Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Ruixin,Beijing Institute of Technology,Beijing 100081,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2024年第5期27-37,共11页
Electric Machines and Control
基金
北京市自然科学基金(3232050)。
关键词
双三相永磁同步电动机
双三相驱动器
耦合建模
开路故障
故障诊断
dual three-phase permanent magnet synchronous motor
dual three-phase drive
coupled modeling
open-circuit fault
fault diagnosis
