公开(公告)号：US20230236249A1

公开(公告)日：2023-07-27

申请号：US18157806

申请日：2023-01-20

Applicant: ABB Schweiz AG

Inventor： Panagiotis Kakosimos ,  Ingo Stroka ,  Georgios Stamatiou

IPC: G01R31/34 ,  G01R31/52

CPC classification number: G01R31/346 ,  G01R31/52

Abstract: A method for estimating at least one leakage inductance of a 3n-phase electrical machine includes performing a first machine investigation scheme and a second machine investigation scheme, the first scheme including ordering a machine drive stage to control one of the 3-phase windings, obtaining a first set of measured currents from the 3-phase winding and processing the first set of measured currents to obtain primary characteristics of an electrical quantity of the electrical machine, the second scheme including ordering the machine drive stage to control all the 3-phase windings using a VSD control model, the controlling involving only controlling a first fundamental subspace of the VSD control model, obtaining a second set of measured currents from all 3-phase windings and processing the second set of measured currents to obtain a leakage inductance estimate and secondary characteristics of the electrical quantity, for which leakage inductance estimate the primary and secondary characteristics match.

公开(公告)号：US20200295691A1

公开(公告)日：2020-09-17

申请号：US16749057

申请日：2020-01-22

Applicant: ABB Schweiz AG

Inventor： Panagiotis Kakosimos ,  Rahul Kanchan ,  Georgios Stamatiou

IPC: H02P21/22 ,  H02P27/12

Abstract: A method of controlling a multi-phase electrical machine by means of a power converter, wherein the method includes: a) controlling the electrical machine by utilizing vector space decomposition, VSD, wherein the controlling involves releasing control of the current of a harmonic while maintaining control of the current of the fundamental, b) measuring phase currents of the electrical machine while the control of the current of the harmonic is released, c) transforming the current measurements using VSD to obtain a current signature of the harmonic, and d) determining whether a fault is present in the electrical machine or the power converter based on a comparison of the current signature with a reference current signature of the harmonic.

公开(公告)号：US10985682B2

公开(公告)日：2021-04-20

申请号：US16749057

申请日：2020-01-22

Applicant: ABB Schweiz AG

Inventor： Panagiotis Kakosimos ,  Rahul Kanchan ,  Georgios Stamatiou

IPC: H02P21/00 ,  H02P21/22 ,  H02P27/12

Abstract: A method of controlling a multi-phase electrical machine by means of a power converter, wherein the method includes: a) controlling the electrical machine by utilizing vector space decomposition, VSD, wherein the controlling involves releasing control of the current of a harmonic while maintaining control of the current of the fundamental, b) measuring phase currents of the electrical machine while the control of the current of the harmonic is released, c) transforming the current measurements using VSD to obtain a current signature of the harmonic, and d) determining whether a fault is present in the electrical machine or the power converter based on a comparison of the current signature with a reference current signature of the harmonic.