公开(公告)号：US20230117062A1

公开(公告)日：2023-04-20

申请号：US17906470

申请日：2021-02-08

Applicant: ABB Schweiz AG

Inventor： Pedro Rodriguez ,  Jahirul Islam ,  Reza Rajabi Moghaddam

IPC: G01H1/00 ,  G01R31/34 ,  H02K1/24

Abstract: A method of identifying a fault in a synchronous reluctance electric machine, the method including carrying out a first vibration measurement on a stator in a first radial direction of the stator; carrying out a second vibration measurement on the stator in a second radial direction of the stator; determining, on the basis of at least one of the first vibration measurement and the second vibration measurement, a first vibration frequency; determining, on the basis of the first vibration measurement and the second vibration measurement, a mode shape of the vibration at the first vibration frequency; and determining, on the basis that the first vibration frequency fb and the mode shape m fulfil the following barrier fault conditions: fb=fr, and m=1 where fr is a rotation frequency of a rotor, that a flux barrier of the rotor is defect.

公开(公告)号：US11719569B2

公开(公告)日：2023-08-08

申请号：US17906470

申请日：2021-02-08

Applicant: ABB Schweiz AG

Inventor： Pedro Rodriguez ,  Jahirul Islam ,  Reza Rajabi Moghaddam

IPC: G01R31/34 ,  G01H1/00 ,  H02K1/24

CPC classification number: G01H1/003 ,  G01R31/343 ,  H02K1/246 ,  H02K2213/03

Abstract: A method of identifying a fault in a synchronous reluctance electric machine, the method including carrying out a first vibration measurement on a stator in a first radial direction of the stator; carrying out a second vibration measurement on the stator in a second radial direction of the stator; determining, on the basis of at least one of the first vibration measurement and the second vibration measurement, a first vibration frequency; determining, on the basis of the first vibration measurement and the second vibration measurement, a mode shape of the vibration at the first vibration frequency; and determining, on the basis that the first vibration frequency fb and the mode shape m fulfil the following barrier fault conditions:

fb=fr, and m=1

where fr is a rotation frequency of a rotor, that a flux barrier of the rotor is defect.

公开(公告)号：US20200350809A1

公开(公告)日：2020-11-05

申请号：US16930788

申请日：2020-07-16

Applicant: ABB Schweiz AG

Inventor： Áron Szücs ,  Juhanl Mantere ,  Jahirul Islam

IPC: H02K16/04 ,  H02K21/14 ,  H02K1/27 ,  H02K1/12 ,  H02P27/06 ,  H02K29/03 ,  H02P23/04

Abstract: A method for controlling a synchronous double stator electric machine. A first stator and a first set of magnetic poles on a common rotor forms a first electric machine. A second stator and a second set of magnetic poles on the rotor forms a second electric machine. The first electric machine and the second electric machine is shifted mechanically by a predetermined angle. An electrical shift is produced to the control of at least the mechanically shifted electric machine with a respective frequency converter in order to at least partly compensate for the mechanical shift in the mechanically shifted electric machine.

公开(公告)号：US11594944B2

公开(公告)日：2023-02-28

申请号：US16930788

申请日：2020-07-16

Applicant: ABB Schweiz AG

Inventor： Áron Szücs ,  Juhani Mantere ,  Jahirul Islam

IPC: H02K16/04 ,  H02K1/12 ,  H02K1/276 ,  H02K21/14 ,  H02K29/03 ,  H02P23/04 ,  H02P27/06

Abstract: A method for controlling a synchronous double stator electric machine. A first stator and a first set of magnetic poles on a common rotor forms a first electric machine. A second stator and a second set of magnetic poles on the rotor forms a second electric machine. The first electric machine and the second electric machine is shifted mechanically by a predetermined angle. An electrical shift is produced to the control of at least the mechanically shifted electric machine with a respective frequency converter in order to at least partly compensate for the mechanical shift in the mechanically shifted electric machine.

公开(公告)号：US11239734B2

公开(公告)日：2022-02-01

申请号：US16095644

申请日：2017-04-25

Applicant: ABB Schweiz AG

Inventor： Wenliang Chen ,  Jahirul Islam

IPC: H02K16/04 ,  H02K1/18 ,  H02K21/12 ,  H02K16/00

Abstract: It is provided a multi-stator rotating electrical machine including: an inner stator; an outer stator; a rotor provided radially between inner stator and the outer stator; an inner gap distance between the rotor and the inner stator; and an outer gap distance between the rotor and the outer stator. An average of the inner gap distance is between 75 and 80 percent of an average of the outer gap distance.

公开(公告)号：US20190131855A1

公开(公告)日：2019-05-02

申请号：US16095644

申请日：2017-04-25

Applicant: ABB Schweiz AG

Inventor： Wenliang Chen ,  Jahirul Islam

IPC: H02K16/04 ,  H02K1/18 ,  H02K21/12

Abstract: It is provided a multi-stator rotating electrical machine including: an inner stator; an outer stator; a rotor provided radially between inner stator and the outer stator; an inner gap distance between the rotor and the inner stator; and an outer gap distance between the rotor and the outer stator. An average of the inner gap distance is between 75 and 80 percent of an average of the outer gap distance.