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| Analysis of the Influence of Back-EMF and Saliency Ratio on Steady-State Characteristics of a High Efficiency Permanent Magnet Synchronous Reluctance Motor |
| Wang Jin, Li Yan, Jia Jianguo, Jing Yongteng, Zhang Jialin |
| National Engineering Research Center for Rare Earth Permanent Magnet Machines Shenyang University of Technology Shenyang 110870 China |
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Abstract The parameters of E0/U and saliency ratio ρ are crucial for the design and efficiency improvement of permanent magnet synchronous reluctance motor (PMSRM).Firstly,the relationship between power factor and saliency ratio under different E0/U states is deduced.Secondly,the distributions of current,copper loss and core loss on the ρ -E0/U coordinate plane are calculated,and the minimum loss area is obtained.The “palm” design principle of PMSRM applied in high-efficiency motor is proposed.Finally,a 5.5kW prototype was designed and manufactured.The efficiency of the prototype reached IE5,and the consumption of permanent magnet of the PMSRM was 30% less than that of the conventional permanent magnet synchronous motor,which verified the design principle.
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Received: 15 October 2019
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2020, Vol. 35 
