scholarly journals Efficient finite element method to estimate eddy current loss due to random interlaminar contacts in electrical sheets

2017 ◽  
Vol 31 (4) ◽  
pp. e2254
Author(s):  
Sahas Bikram Shah ◽  
Paavo Rasilo ◽  
Harri Hakula ◽  
Antero Arkkio
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Eddy Current ◽  
Eddy Current Loss ◽  
Current Loss ◽  
Element Method

Development of in-wheel magnetic-geared motor for walking support machines

2020 ◽  
Vol 64 (1-4) ◽  
pp. 157-163
Author(s):  
Koki Ito ◽  
Takahisa Kadomatsu ◽  
Kohei Obana ◽  
Kenji Nakamura
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Eddy Current ◽  
Three Dimensional ◽  
Eddy Current Loss ◽  
Experimental Results ◽  
3D Fem ◽  
Current Loss ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

This paper deals with development of in-wheel magnetic-geared motor for walking support machines. In a previous paper, a magnetic-geared motor for a walking support machine was prototyped. However, its efficiency was low, therefore improving the efficiency is necessary for practical use. This paper presents the improving efficiency of the magnetic-geared motor from the viewpoint of torque increasing and loss reducing by using a three-dimensional finite element method (3D-FEM). In addition, supporting method of pole-pieces and eddy current loss in housing were discussed. Furthermore, the proposed motor is prototyped. The experimental results show that its efficiency is 15% higher than the previous motor. Finally, the walking support machine installed with two magnetic-geared motors is prototyped and demonstrated.

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