电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2014年
19期
31-35
,共5页
单绕组磁悬浮开关磁阻电机%数学模型%磁饱和%有限元分析
單繞組磁懸浮開關磁阻電機%數學模型%磁飽和%有限元分析
단요조자현부개관자조전궤%수학모형%자포화%유한원분석
single winding bearingless switched reluctance motors(SWBSRM)%mathematical model%magnetic satu-ration%finite - element analysis
针对现有的单绕组磁悬浮开关磁阻电机在建立数学模型时常忽略磁饱和影响的不足,利用麦克斯韦应力法,结合等效磁路分析法,推导了考虑磁饱和特性的单绕组磁悬浮开关磁阻电机径向力数学模型。以一台样机为例,建立有限元仿真模型,同时对比基于虚位移法推导所得的数学模型,验证数学模型的正确性和优越性,为电机的运行特性分析、本体优化设计以及控制策略研究提供更准确的理论依据。
針對現有的單繞組磁懸浮開關磁阻電機在建立數學模型時常忽略磁飽和影響的不足,利用麥剋斯韋應力法,結閤等效磁路分析法,推導瞭攷慮磁飽和特性的單繞組磁懸浮開關磁阻電機徑嚮力數學模型。以一檯樣機為例,建立有限元倣真模型,同時對比基于虛位移法推導所得的數學模型,驗證數學模型的正確性和優越性,為電機的運行特性分析、本體優化設計以及控製策略研究提供更準確的理論依據。
침대현유적단요조자현부개관자조전궤재건립수학모형시상홀략자포화영향적불족,이용맥극사위응역법,결합등효자로분석법,추도료고필자포화특성적단요조자현부개관자조전궤경향력수학모형。이일태양궤위례,건립유한원방진모형,동시대비기우허위이법추도소득적수학모형,험증수학모형적정학성화우월성,위전궤적운행특성분석、본체우화설계이급공제책략연구제공경준학적이론의거。
Magnetic saturation effects are usually ignored in the derivation of mathematical model for single winding bearingless switched reluctance motors(SWBSRM). Aiming at the problem,this paper builds a radial force mathe-matical model considering the characteristic of magnetic saturation with the Maxwell stress tensor method and the mag-netic equivalent circuit. Taken a prototype as the example,the finite - element simulation model is established. Simu-lation results show the validity and superiority of the model by comparison with the FEM simulation and the mathemati-cal model based on the virtual work method. The result can provide more accurate theoretical basis in the research of motor operation characteristics analysis,optimum design and control strategy.