A Fault-Tolerant Scheme Against the Open-Switch Failure in Open-End Winding PMSM System With Isolated DC bus
Na Chai, Wei Hu
Abstract
This letter proposes a fault-tolerant scheme against the open-switch failure for the open-end winding permanent-magnet synchronous machine (OW-PMSM) system with isolated DC bus. With the proposed scheme, the reference voltages in three-phase stationary coordinate system are shifted synchronously to adapt the output voltage characteristic of the system in fault state. Further, to reduce the switching losses, the modulation process is designed based on the polarity of reference voltages. The performance of the proposed modulation scheme is experimentally validated.
Topics & Concepts
Polarity (international relations)Control theory (sociology)Fault (geology)Fault toleranceVoltageProcess (computing)Computer scienceScheme (mathematics)Modulation (music)Electromagnetic coilEngineeringTopology (electrical circuits)Electrical engineeringPhysicsMathematicsCellAcousticsArtificial intelligenceGeologyBiologyMathematical analysisDistributed computingGeneticsControl (management)SeismologyOperating systemMultilevel Inverters and ConvertersElectric Motor Design and AnalysisAdvanced DC-DC Converters