CAJ | 학술논문

利用气隙磁通密度解析模型和洛仑兹力公式建立了球坐标系下空心定子线圈所受切向电磁力和径向电磁力的解析模型。利用定子壳体和线圈座的有限元模型计算定子线圈座在电磁力作用下的应变，分析了定子壳体厚度、线圈座连接杆长度和直径对应变的影响。最后利用有限元法和解析法对样机进行分析并对结果进行比较，验证了解析模型的正确性和准确性。分析表明，当定子壳体厚度和连接杆直径线性减小而连接杆长度线性增大时，定子线圈座在电磁力作用下产生的应变量在一定范围内线性增加，然后显著增加。
이용기극자통밀도해석모형화락륜자력공식건립료구좌표계하공심정자선권소수절향전자력화경향전자력적해석모형。이용정자각체화선권좌적유한원모형계산정자선권좌재전자력작용하적응변，분석료정자각체후도、선권좌련접간장도화직경대응변적영향。최후이용유한원법화해석법대양궤진행분석병대결과진행비교，험증료해석모형적정학성화준학성。분석표명，당정자각체후도화련접간직경선성감소이련접간장도선성증대시，정자선권좌재전자력작용하산생적응변량재일정범위내선성증가，연후현저증가。
ABSTRACT An analytical model of air-gap flux density and the Lorenz force law were used to establish radial and tangential electro-magnetic force models in the spherical coordinate system for the stator coils. Then, a finite element model of the stator casing and coil holder was applied to compute the strain of the coil holder caused by electromagnetic force, and the influences of the stator casing's thickness, the diameter and the length of the coil holder's connecting rod on this strain were analyzed. Finally, the finite element method and the analytical method were used to analyze a prototype motor and their results were compared, which verified the validity and accuracy of the analytical models. This analysis shows that when the stator casing becomes thin or the connecting rod slenderizes, the strain of the stator coil holder produced by electromagnetic force increases linearly within a certain range and then grows significant-ly.