公开(公告)号：US20240171103A1

公开(公告)日：2024-05-23

申请号：US18211904

申请日：2023-06-20

Applicant: Korea Advanced Institute of Science and Technology

Inventor： In Gwun Jang ,  Changwoo Lee

IPC: H02P21/22 ,  H02P21/14 ,  H02P21/26

CPC classification number: H02P21/22 ,  H02P21/141 ,  H02P21/26 ,  H02K1/276

Abstract: The present disclosure proposes a method and device for optimally designing the topology of a permanent magnet insertion type electric motor by considering maximum torque control performance per ampere and field-weakening control performance. According to the present disclosure, for a topology optimization-based design of an electric motor including a stator and a rotor and having a permanent magnet inserted into the rotor, a computer device is configured to calculate an optimal current control condition for the stator according to a structure of the rotor and to derive a topology optimization-based design of the rotor by applying the optimal current control condition.

公开(公告)号：US20250103772A1

公开(公告)日：2025-03-27

申请号：US18626563

申请日：2024-04-04

Applicant: Korea Advanced Institute Of Science And Technology

Inventor： In Gwun JANG ,  Changwoo Lee

IPC: G06F30/23

Abstract: The present disclosure proposes a method and device for multi-material topology optimization for optimal arrangement of a permanent magnet in an electric motor. The present disclosure relates to multi-material topology optimization for optimal arrangement of a permanent magnet in an electric motor including a stator, a rotor, and at least one permanent magnet provided to the rotor, and may be configured to express multi-materials of each of a plurality of finite elements divided from at least a partial area of the rotor, as a plurality of design variables defined to express multi-material states; and to derive topology optimization for a structure of the permanent magnet in the rotor using the design variables, for at least one of usage minimization of the permanent magnet and torque density maximization for the electric motor.

公开(公告)号：US11607944B2

公开(公告)日：2023-03-21

申请号：US16204256

申请日：2018-11-29

Applicant: Korea Advanced Institute of Science and Technology

Inventor： InGwun Jang ,  Dongsuk Kum ,  Kyung-Soo Kim ,  Kitae Jang ,  Changwoo Lee ,  Jong Ho Kim ,  Kyunghwan Choi ,  Mingi Kim

IPC: B60K6/383 ,  B60K25/02 ,  B60L1/00 ,  F16D41/06 ,  F16H55/36 ,  F02B67/06 ,  B60K25/00

Abstract: Disclosed is an apparatus and method for operating vehicular accessories during an engine stop using a one-way clutch pulley, the apparatus including the one-way clutch pulley configured to drive the vehicular accessories, and including a coupler and a one-way clutch. The one-way clutch pulley includes an engine crank shaft configured to connect to an engine of a vehicle; the coupler configured to couple with the engine crank shaft; the one-way clutch configured to couple with the coupler; and a pulley configured to connect to the one-way clutch, and the one-way clutch is configured to connect to the pulley and to rotate in one direction.