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作 者:周云红[1] 王东[1] 黄飞 胡泮 孙玉坤[1] ZHOU Yunhong;WANG Dong;HUANG Fei;HU Pan;SUN Yukun(School of Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出 处:《振动与冲击》2023年第9期312-321,共10页Journal of Vibration and Shock
基 金:国家自然科学基金(51977103,51877101);江苏省重点研发计划(BE2021094);南京工程学院校级科研基金(YKJ202208)。
摘 要:振动噪声的抑制是近年来开关磁阻电机研究的热门领域。根据麦克斯韦张量法理论分析了径向磁拉力减小的原理,通过在定子齿顶、转子齿两侧同时开矩形槽,增大了定转子间气隙长度的同时又将一部分沿径向方向的磁通密度改变为切向方向,减小了径向磁拉力,达到抑制电磁振动的目的。利用参数化扫描的方法,对开关磁阻电机的开槽参数进行了优化,得出开槽尺寸,并对比分析开槽前后电机的径向磁拉力。运用Ansys Workbench模块分别对定转子齿开槽前后的电机定子进行模态、谐响应以及噪声分析,得到其模态固有频率、模态参与因子、振动响应频率以及声压频谱。分析结果表明:该方法有效减小了开关磁阻电机的径向磁拉力,改善了开关磁阻电机的振动和噪声。Suppression of vibration and noise is a hot study field of switched reluctance motor(SRM)in recent years.Here,the principle of reducing radial magnetic pull was analyzed according to Maxwell tensor method.By opening rectangular slots at top of stator teeth and both sides of rotor teeth,length of air gap between stator and rotor was increased,and meanwhile,a part of magnetic flux density along radial direction was changed to tangential direction to reduce radial magnetic pull,and reach the goal of suppressing electromagnetic vibration.Using the method of parametric scanning,slotting parameters of SRM were optimized to obtain slotting size,and radial magnetic pulls of SRM before and after stator and rotor slotted were contrastively analyzed.Ansys Workbench finite element module was used to do modal analyses,harmonic response analyses and noise analyses,respectively for SRM stator before and after stator and rotor slotted,and obtain its modal frequencies,modal participation factors,vibration response frequencies and sound pressure spectra.The analyses results showed that the proposed method can effectively reduce radial magnetic pull of SRM and improve its vibration and noise.
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