scholarly journals Design studies of inner and outer embedded Permanent Magnet for hybrid electric vehicles

2018 ◽  
Vol 159 ◽  
pp. 02003
Author(s):  
Aravind CV ◽  
Ramani Kannan ◽  
Heng Jing Lei ◽  
Joga Dharma Setiawan
Keyword(s):  
Performance Analysis ◽  
Permanent Magnet ◽  
Numerical Study ◽  
Permanent Magnet Machines ◽  
Flux Flow ◽  
Torque Density ◽  
Wide Range ◽  
Interior Permanent Magnet ◽  
High Torque ◽  
Hybrid Electric

Hybrid vehicles require high torque for propel, hence permanent Magnet machines are highly suiting for the improvement in the torque density. The paper focus on designing built-in interior permanent magnet (IPM) synchronous machine for hybrid electric drive. With the permanent magnet switched from rotor to stator and the characteristics over a wide range of speed operation is studied. The results obtained though performance analysis shows that at 130 rpm high torque with power peaking at around 900 rpm. Both the inner and outer machine are studied using numerical study tool for performance analysis for the application mentioned above. The inner magnet rotor design has provide a better magnetic flux flow due to the larger flux linkage between the permanent magnet and stator pole. Both type of machines are evaluated for torque where the machine with inner magnet provide a higher torque density of 4.94% as compared to the outer magnet machines.

Influence of unequal stator tooth width on the performance of outer-rotor permanent magnet machines

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 432-438
Author(s):  
Aimeng Wang ◽  
Dashuang Li
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Machines ◽  
Efficiency Improvement ◽  
Machine Model ◽  
Element Analysis ◽  
Torque Density ◽  
Output Torque ◽  
Tooth Width ◽  
Outer Rotor ◽  
High Torque

AbstractOuter-rotor permanent magnet machines for low-speed and high-torque applications have been used due to their high moment of inertia and torque density. In this paper, the 12-slot/10-pole outer-rotor fractional-slot permanent magnet machine model is established by finite element analysis, the influence of unequal stator tooth width and tooth tip width is investigated for the PM machine, and five different schemes of stator tooth and tip width are designed and analyzed. Detailed comparisons of the performance characteristics of the machines are presented including important issues such as output torque, magnetic field distribution, and tooth flux density. It is shown that the torque density and cogging torque and efficiency can be effectively improved by choosing reasonable tooth and tip width, which lays a foundation for further optimum design and efficiency improvement of the machine.

scholarly journals VARIATION OF ELECTRIC PROPERTIES BETWEEN SURFACE PERMANENT MAGNET AND INTERIOR PERMANENT MAGNET MOTOR

2012 ◽  
Vol 06 ◽  
pp. 109-114
Author(s):  
BYUNG-CHUL WOO ◽  
DO-KWAN HONG ◽  
JI-YOUNG LEE
Keyword(s):  
Permanent Magnet ◽  
Complex Geometry ◽  
Torque Ripple ◽  
Direct Drive ◽  
Element Analysis ◽  
Torque Density ◽  
Interior Permanent Magnet ◽  
3D Fea ◽  
High Torque ◽  
Transverse Flux

The most distinctive advantage of transverse flux motor(TFM) is high torque density which has prompted many researches into studying various design variants. TFM is well suited for low speed direct drive applications due to its high torque density. This paper deals with simulation based comparisons between a surface permanent magnet transverse flux motor(SPM-TFM) and an interior permanent magnet transverse flux motor(IPM-TFM). A commercial finite element analysis(FEA) software Maxwell 3D is used for electromagnetic field computation to fully analyze complex geometry of the TFMs. General characteristics, such as cogging torque, rated torque and torque ripple characteristics of the two TFMs are analyzed and compared by extensive 3D FEA.

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