公开(公告)号：US20210240874A1

公开(公告)日：2021-08-05

申请号：US17235866

申请日：2021-04-20

申请人： HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Xiaoping ZHANG ,  Yuxuan GUO ,  Zhu ZHANG ,  Guanghui ZHU ,  Haipeng JIANG ,  Hongwei CHEN

IPC分类号： G06F30/10

摘要： Provided is a method for optimizing structured mesh generation for a thermal analysis model of a rotor bar of an AC motor. A quadrilateral is randomly added within the top surface of the thermal analysis model of the rotor bar. The polygonal top surface is divided into multiple quadrilateral areas by drawing lines from each vertex of the quadrilateral to each vertex of the top surface or two points selected randomly on each edge of the top surface, respectively. A fruit fly optimization algorithm is adopted to obtain a maximum value of the average quality of the quadrilateral areas in a division mode and corresponding coordinates of the vertices of the quadrilateral areas. The top surface is divided into multiple quadrilateral areas according to the division mode corresponding to the maximum average quality to divide the model of the rotor bar into multiple columnar models.

公开(公告)号：US20220255409A1

公开(公告)日：2022-08-11

申请号：US17168789

申请日：2021-02-05

申请人： HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Xiaoping ZHANG ,  Yuxuan GUO ,  Zhu ZHANG ,  Guanghui ZHU ,  Haipeng JIANG ,  Hongwei CHEN

IPC分类号： H02K15/02 ,  H02K1/16

摘要： Provided is a noise reduction method by cutting a corner of a tooth shoulder of a stator of an AC traction motor based on an inscribed arc. Taking a vertex of a corner of the tooth shoulder of the stator as an end point, two points are selected along two sides of the corner of the tooth shoulder of the stator to allow distances from the two points to the end point to be equal. The two points are determined as tangent points D1 and D2 of the inscribed arc. The tangent points D1 and D2 define the inscribed arc along which the corner of the tooth shoulder is cut off.