永磁同步电动机失磁故障电磁参数分析
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摘要
对永磁电机失磁故障进行了分类,基于Ansoft建立了内置式永磁同步电动机有限元仿真模型。分别对永磁同步电动机不失磁和不同程度失磁故障情况下的电磁力和电磁转矩进行了分析,探究了电机电磁性能与失磁故障之间的关系。仿真结果表明,随着永磁电机失磁故障程度的增加,静态磁场中电机的电磁力将随之增大,电磁转矩却逐渐减小,而瞬态磁场中电磁力随着失磁程度增加也随之增大,并且波动也较大,而电磁转矩受影响较小,波动幅度不大。
The kinds of demagnetization fault of permanent magnet synchronous motor( PMSM) were classified. The finite element simulation model of the interior permanent magnet synchronous motor was established,the interior permanent magnet synchronous motor finite element simulation model based on Ansoft,the electromagnetic force and electromagnetic torque of PMSM under normal or different degree of demagnetization were analyzed respectively. The relationship between the electromagnetic performance of the PMSM and demagnetization fault was explored. The simulation results show that with the increase of permanent magnetic motor loss of magnetic flux,the electromagnetic force of the motor in the static magnetic field will increase,but the electromagnetic torque will gradually decrease. In the transient magnetic field,with the increase of the degree of demagnetization,the electromagnetic force increases,and the fluctuation is also great. However,the electromagnetic torque is less affected and the fluctuation is not large.
The kinds of demagnetization fault of permanent magnet synchronous motor( PMSM) were classified. The finite element simulation model of the interior permanent magnet synchronous motor was established,the interior permanent magnet synchronous motor finite element simulation model based on Ansoft,the electromagnetic force and electromagnetic torque of PMSM under normal or different degree of demagnetization were analyzed respectively. The relationship between the electromagnetic performance of the PMSM and demagnetization fault was explored. The simulation results show that with the increase of permanent magnetic motor loss of magnetic flux,the electromagnetic force of the motor in the static magnetic field will increase,but the electromagnetic torque will gradually decrease. In the transient magnetic field,with the increase of the degree of demagnetization,the electromagnetic force increases,and the fluctuation is also great. However,the electromagnetic torque is less affected and the fluctuation is not large.
引文
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[3]卢伟甫,刘明基,罗应立,等.自起动永磁同步电机起动过程退磁磁场的计算与分析[J].中国电机工程学报,2011,31(15):53-60.
[4]王明杰,李彦彦,焦留成,等.永磁游标直线电机磁场解析计算[J].电机与控制学报,2017,21(10):54-61.
[5]LIAN J,ZHOU Y F,MA T,et al.Design of doubly salient permanent magnet motor for small displacement ISG mild hybrid[C]//International Conference on Mechatronics and Automation.IEEE,2009:4698-4703.
[6]安忠良.超高效永磁同步电动机研究开发[D].沈阳:沈阳工业大学,2006.
[7]师蔚,贡俊,黄苏融.永磁电动机永磁体防退磁技术研究综述[J].微特电机,2012,40(4):71-76.
[8]HONG Jongman,HYUN Doosoo,LEE Sang Bin,et al.Automated monitoring of magnet quality for permanent-magnet synchronous motors at standstill[J].IEEE Transactions on Industry Applications,2010,46(4):1397-1405.
[9]伍召莉.永磁同步电机失磁分析及在线监测[D].北京:北京交通大学,2012.
[10]肖曦,张猛,李永东.永磁同步电机永磁体状况在线监测[J].中国电机工程学报,2007,27(24):43-47.
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