公开(公告)号：US20210211016A1

公开(公告)日：2021-07-08

申请号：US17212088

申请日：2021-03-25

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xiaoping ZHANG ,  Donghao LIU ,  Bo FU

IPC: H02K5/24 ,  G06F30/23

Abstract: A denoising optimization method for an AC traction motor by chamfering a stator tooth shoulder includes taking an angular vertex of the stator tooth shoulder as an end point, obtaining two points equidistantly along two sides of a stator tooth shoulder angle from the end point; and using the two points as tangent points D1 and D2 of the inscribed arc; making the inscribed arc of the tooth shoulder angle through the two tangent points D1 and D2, cutting off the tooth shoulder angle along the inscribed arc, and adjusting an oblique height HS1 of a stator tooth pole shoe. The invention obtains optimal values of a chamfering size and oblique height of a stator tooth slot pole shoe by adjusting the oblique height of the stator tooth pole shoe and adopting a particle swarm optimization algorithm.

公开(公告)号：US20220302812A1

公开(公告)日：2022-09-22

申请号：US17456531

申请日：2021-11-24

Applicant: Hunan University of Science and Technology

Inventor： Xiaoping ZHANG ,  Donghao LIU ,  Bo FU

IPC: H02K29/03 ,  H02K1/16

Abstract: To solve the problem of large electromagnetic noise in AC traction motor, embodiments have open square notches at symmetrical positions on both sides of stator teeth of AC traction motor to effectively reduce electromagnetic noise without affecting other performance indicators of motor. In addition, embodiments fit the functional relationship between the optimal notch size or optimal slotting position size of motors and their power by determining the optimal notch size or optimal slotting position size of motors with different power grades, so as to achieve the noise reduction effect.