电动客车牵引系统逆变器故障诊断与容错控制

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中图分类号：U463.23 文献标识码：A 文章编号：1003-8639（2025）08-0183-03

【Abstract】As thecore componentof electricbus traction system，thereliabilityof inverterdirectlyafects the safety ofvehicleoperation.Thispaperacordingtothecommonfaulttypesof inverter，afaultdiagnosismodelbasedonwavelet transformand supportvector machine isestablished to realize theaccurate identification ofopen circuit and short circuit faults.Atthesametime，animprovedslidingmodefault-tolerantcontrolstrategyisdesignedtoachievesmoothtransition control underfaultconditions onthe basisof ensuring systemstability.The experimentalresultsshow that the accuracyof the proposed method for open-circuit fault identification is more than 95 % ，and the fault-tolerant control strategy can control the torque fluctuation within ±5% of the rated value，which provides an effective solution for improving the reliability of electric bus operation.

【Key words】electric bus；traction inverter; faultdiagnosis；fault tolerant control；sliding mode contro

随着新能源汽车产业的快速发展，电动客车在公共交通领域的应用日益广泛。（剩余3877字）