公开(公告)号：US20220166273A1

公开(公告)日：2022-05-26

申请号：US17533029

申请日：2021-11-22

Applicant: POSTECH Research and Business Development Foundation ,  EPT Co., Inc. ,  KNR System, Inc.

Inventor： Kwang Hee NAM ,  Jae Hak KIM ,  Sang Moo LEE ,  Myoung Han KIM ,  Bon Kil KOO

IPC: H02K1/27

Abstract: The present invention relates to a rotor of motor, and more particularly, to a 2-segment quasi-Halbach rotor of motor that includes a radial magnet and a circumferential magnet which are Halbach-arrayed and a back iron providing a flux to reduce a thickness of the magnet and acquire high air-gap flux density.

公开(公告)号：US20210405093A1

公开(公告)日：2021-12-30

申请号：US17271188

申请日：2019-08-23

Applicant: Ki Chul HONG ,  Ki Seok KIM ,  EPT CO., INC. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Ki Chul HONG ,  Ki Seok KIM ,  Kwang Hee NAM

IPC: G01R15/18 ,  H01F17/02

Abstract: The present invention provides a careless contactless current measurement system comprising a conductive means through which a current can flow and a current sensor for calculating information about the current flowing through the conductive means, wherein: a relative position between at least a part of the conductive means and at least a part of the current sensor is fixed; the current sensor obtains a magnetic flux generated by the current flowing through the conductive means and transmitted through a nonmagnetic material, and outputs information about the current flowing through the conductive means in a wired or wireless manner Because such characteristics change only the shape of the conductive means around the magnetic flux measuring means without using a magnetic core, the amount of a magnetic flux passing through the magnetic flux measuring means is increased, thereby improving a signal-to-noise ratio (SNR) of the magnetic flux measuring means.

公开(公告)号：US11817746B2

公开(公告)日：2023-11-14

申请号：US17533029

申请日：2021-11-22

Applicant: POSTECH Research and Business Development Foundation ,  EPT Co., Inc. ,  KNR System, Inc.

Inventor： Kwang Hee Nam ,  Jae Hak Kim ,  Sang Moo Lee ,  Myoung Han Kim ,  Bon Kil Koo

IPC: H02K1/00 ,  H02K1/276 ,  H02K1/2793 ,  H02K1/2786

CPC classification number: H02K1/2766 ,  H02K1/2786 ,  H02K1/2793 ,  H02K2213/03

Abstract: The present invention relates to a rotor of motor, and more particularly, to a 2-segment quasi-Halbach rotor of motor that includes a radial magnet and a circumferential magnet which are Halbach-arrayed and a back iron providing a flux to reduce a thickness of the magnet and acquire high air-gap flux density.