So aimed at that , based on deep analyzing the eddy - current mechanism of the stator liners and rotor liners . this paper calculated the eddy - current with the multiple multipole theory by deploying the liners . according to the calculation result , the electromagnetic effect of the liners in the permanent magnet canned motor pump was analyzed 針對這一區(qū)別特征,本論文在對定、轉(zhuǎn)子屏蔽套渦流產(chǎn)生機(jī)理分析的基礎(chǔ)上,采用將屏蔽套展開的方法,利用多極理論求解了屏蔽套的渦電流損耗,從而分析了屏蔽套對電磁性能的影響。