Comprehensive Comparative Study of Ultra-high-speed PM Machines for Ring PM and Solid PMstructure
This study explored the differences in the permanent magnet structures of ultra-high-speed perma-nent magnet motors,comparing the electromagnetic,loss,heat transfer,and mechanical properties of the ring-shaped and solid permanent magnet structures through finite element analysis.It verified the correctness of the above analysis methods through prototype experiments.The research shows that the solid structure has a higher magnetic flux density and can generate a higher back electromotive force;the ring-shaped structure has lower iron loss,while the solid structure has lower copper loss and eddy current loss.In terms of heat transfer,the solid structure has better thermal conductivity,and the temperature of the permanent magnet and sheath is lower.In addition,both structures can maintain good mechanical stress under extreme condi-tions,and the solid structure performs better in terms of mechanical stress.
ultra-high-speed permanent magnet synchronous motorelectromagnetic characteristicsloss characteristicsheat transfer characteristicsmulti-physics field analysis
万方数据
维普
