基于定子电流谐波法的无刷励磁机旋转二极管开路故障检测.docx

基于定子电流谐波法的无刷励磁机旋转二极管开路故障检测
摘要
无刷励磁机是一种广泛应用于各种工业设备中的电机，其运行稳定性和性能指标的可靠性对于整个系统的正常运行至关重要。因此，在运行中出现的故障需要及时有效地检测并处理。本文基于定子电流谐波法，研究了无刷励磁机旋转二极管开路故障检测技术，提出了一种简单有效的检测方法。
首先，从无刷励磁机的结构和工作原理入手，介绍了旋转二极管开路故障的原因和危害。然后，详细阐述了定子电流谐波法的原理和实现步骤。定子电流谐波法是通过测量无刷励磁机含有旋转二极管的定子电流，识别和分析电流谐波成分，以判断滤波电容或旋转二极管是否故障。最后，为验证该方法的有效性，本文进行了相应的仿真和实验，得到了令人满意的结果。
通过本文的研究，我们可以发现，定子电流谐波法是一种简单易行、准确可靠的无刷励磁机旋转二极管开路故障检测方法。同时，该方法还可以为其他类似电机的故障检测提供参考和借鉴。因此，本文的研究具有一定的理论意义和实践价值。
关键词：无刷励磁机；旋转二极管开路故障；定子电流谐波法；故障检测。
ABSTRACT
Thebrushlessexcitationmachineisawidelyusedmotorinvariousindustrialequipment.Thestabilityandreliabilityofitsperformanceindicatorsarecrucialforthenormaloperationoftheentiresystem.Therefore,anyfailuresthatoccurduringoperationrequiretimelyandeffectivedetectionandhandling.Thispaperstudiesthedetectiontechnologyfortheopen-circuitfaultoftherotatingdiodeinabrushlessexcitationmachinebasedonthestatorcurrentharmonicmethodandproposesasimpleandeffectivedetectionmethod.
Firstly,startingfromthestructureandworkingprincipleofthebrushlessexcitationmachine,thecausesandhazardsoftheopen-circuitfaultoftherotatingdiodeareintroduced.Then,theprincipleandimplementationstepsofthestatorcurrentharmonicmethodaredescribedindetail.Thestatorcurrentharmonicmethodidentifiesandanalyzestheharmoniccomponentsofthestatorcurrentcontainingtherotatingdiodeofthebrushlessexcitationmachinetodeterminewhetherthefiltercapacitororrotatingdiodeisfaulty.Finally,toverifytheeffectivenessofthismethod,correspondingsimulationsandexperimentsareconducted,andsatisfactoryresultsareobtained.
Throughtheresearchinthispaper,wecanfindthatthestatorcurrentharmonicmethodisasimple,feasible,accurate,andreliabledetectionmethodfortheopen-circuitfaultoftherotatingdiodeinabrushlessexcitationmachine.Atthesametime,thismethodcanalsoprovidereferenceandguidanceforthefaultdetectionofothersimilarmotors.Therefore,thisresearchhascertaintheoreticalsignificanceandpracticalvalue.
Keywords:brushlessexcitationmachine;open-circuitfaultoftherotatingdiode;statorcurrentharmonicmethod;faultdetec