Influence of gear ratio on electromagnetic performance and geometries of vernier permanent magnet synchronous machines

2017 ◽  
Author(s):  
Yue Liu ◽  
Z.Q. Zhu
Keyword(s):  
Permanent Magnet ◽  
Gear Ratio ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Electromagnetic Performance

scholarly journals Design And Rotor Geometry Analysis Of Permanent Magnet–Assisted Synchronous Reluctance Machines Using Ferrite Magnet

2015 ◽  
Vol 66 (6) ◽  
pp. 311-316 ◽  
Author(s):  
Zhiwei Zhang ◽  
Libing Zhou
Keyword(s):  
Permanent Magnet ◽  
Low Cost ◽  
Induction Machines ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Switched Reluctance ◽  
Torque Density ◽  
Switched Reluctance Machines ◽  
Geometry Analysis ◽  
Electromagnetic Performance

Abstract Various electric machines can be the candidate for electric vehicles applications, including induction machines, permanent magnet synchronous machines, switched reluctance machines, etc. Another class of machine, which has been relatively ignored, is synchronous reluctance machines. In order to enhance and increase torque density of pure synchronous reluctance machines, the low cost permanent magnet can be inserted into rotor lamination to contribute torque production, which is so-called permanent magnet-assisted synchronous reluctance machines. This paper presents the design and rotor geometry analysis of low cost ferrite permanent magnet-assisted synchronous reluctance machines with transversally-laminated rotor. The advanced finite element method will be employed to calculate d-axis and q-axis inductance variation with rotor geometric parameters. The electromagnetic performance of optimized permanent magnet-assisted synchronous reluctance machines will be evaluated as well.

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