笼型转子导条断裂引发电机各场量变化与故障程度关联性研究

发布时间：2018-02-28 05:51

本文关键词： 感应电机断条耦合电磁场温度场热应力　出处：《中国电机工程学报》2017年14期 　论文类型：期刊论文

【摘要】：鼠笼感应电机易发生转子断条故障,危害电机的安全运行,对电机的磁场、温度场、转子热应力等都会有很大的影响。该文以1台Y80m2-2电机为例,针对健康转子、断裂1根及2根导条3种情况,计算电机三维瞬态电磁场,分析电机定转子电流及气隙磁密的变化情况。以三维磁场的损耗结果为热源,采用单元之间的顺序耦合加载方式,计算电机三维瞬态温升分布,分析不同断条故障对电机温升变化的影响。最后以温度场计算结果为载荷,分析3种情况下的转子热形变和热应力分布,通过对比正常与故障电机的计算结果,得出一些有益结论。该文可以为完善断条故障原因和预计故障发展趋势提供一些参考。
[Abstract]:The squirrel cage induction motor is prone to break the rotor bar fault, which endangers the safe operation of the motor, and has a great influence on the magnetic field, temperature field and thermal stress of the rotor. This paper takes a Y80m2-2 motor as an example, aiming at the healthy rotor. In this paper, we calculate the three dimensional transient electromagnetic field of the motor, and analyze the variation of the stator and rotor current and the air gap magnetic density of the motor. The result of the loss of the three-dimensional magnetic field is taken as the heat source, and the sequential coupling loading mode between the elements is adopted. The three-dimensional transient temperature rise distribution of the motor is calculated, and the influence of different broken bar faults on the temperature rise change of the motor is analyzed. Finally, the thermal deformation and thermal stress distribution of the rotor under three conditions are analyzed with the result of temperature field as the load. By comparing the calculation results of normal motor and fault motor, some useful conclusions can be drawn. This paper can provide some references for improving the cause of broken bar fault and predicting the trend of fault development.
【作者单位】：哈尔滨理工大学电气与电子工程学院;
【基金】：国家自然科学基金项目(51107022) 黑龙江省杰出青年科学基金(JC2016010) 哈尔滨市科技创新人才研究专项资金(青年后备人才)项目(RC2014QN007005)~~
【分类号】：TM346

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