摘要
针对传统方法很难定量分析磁性槽楔对电机性能影响的缺点,提出采用场-路-运动耦合时步有限元分析磁性槽楔影响的方法。以一台使用磁性槽楔的710kW的高压感应电机为例,通过建立二维瞬态场数学模型,准确计算了气隙磁密分布、槽漏抗及附加损耗等电磁量,并在此基础上,深入分析磁性槽楔相对磁导率的变化对电机电磁参数、相电流、转矩和径向电磁力等的影响。计算结果表明,磁性槽楔可以有效减小气隙磁密中的谐波含量,降低表面损耗和径向电磁力波。
Aiming at the shortcomings of being difficult to quantitativly analyze the effects of magnetic slot wedge on motor performance with traditional methods, a field-circuit-motion coupled FEM is proposed as a method to analyze the effects of magnetic slot wedge. Taking a 710 kW high voltage motor with magnetic slot wedge for example, the air-gap flux density, slot leakage reactance and extra losses were calculated accurately by using 2-D transient mathematical model of the motor. The influences of permeability of magnetic slot wedge on electromagnetic parameters, phase currents, torque-speed characteristics and electromagnetic forces were analyzed in depth. The results show that the magnetic wedge can reduce the harmonic of air-gap flux density effectively, the surface losses and radial electromagnetic forces.
出处
《电机与控制学报》
EI
CSCD
北大核心
2010年第3期1-5,共5页
Electric Machines and Control
基金
"十一五"国家科技支撑计划重点项目(2008BAF34B04)
关键词
高压电机
磁性槽楔
有限元分析
气隙磁场
电磁参数
high voltage motors
magnetic slot wedge
finite element analysis
air -gap magnetic field
electromagnetic parameter
