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公开(公告)号：US20230117062A1
公开(公告)日：2023-04-20
申请号：US17906470
申请日：2021-02-08
申请人： ABB Schweiz AG
摘要： 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.
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公开(公告)号：US10768236B2
公开(公告)日：2020-09-08
申请号：US16496863
申请日：2018-03-06
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Subrat Sahoo
摘要： A rotor bar fault in a rotor of an electrical machine having a plurality of rotor bars and an end ring configured to short circuit the rotor bars. The method includes the steps of measuring a first temperature at a first end ring location, and measuring a second temperature at a second end ring location, the second end ring location being different from the first end ring location. As broken rotor bars cause a non-uniform temperature distribution in the end ring, the detection of rotor bar faults can be based on monitored temperatures at different end ring locations.
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公开(公告)号：US20190207484A1
公开(公告)日：2019-07-04
申请号：US15858043
申请日：2017-12-29
申请人： ABB Schweiz AG
IPC分类号： H02K11/042 , H02K3/20 , H02K21/04
摘要： Unique systems, methods, techniques and apparatuses of an exciterless synchronous generator are disclosed. One exemplary embodiment is an exciterless synchronous generator comprising a stator, a rotor, and a startup excitation system. The stator includes a set of stator windings. The rotor includes an energy harvest winding, a DC power supply including a DC bus and coupled to the energy harvest winding, and a field winding coupled to the DC power supply. The startup excitation system comprises one of a magnetic field generation system structured to generate a magnetic field received by the energy harvest winding in response to a rotation of the rotor, wherein the magnetic field is converted to DC power with the DC power supply and transmitted to the field winding; or a rotor DC power source including and diode coupled in series across the DC bus.
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公开(公告)号：US20240333184A1
公开(公告)日：2024-10-03
申请号：US18598085
申请日：2024-03-07
申请人： ABB Schweiz AG
CPC分类号： H02P23/04 , H02P23/0004 , H02P23/14
摘要： A method of reducing mechanical vibrations of a motor system including an electric motor, the method including: a) receiving a vibration-related signal based on measurements by one or more sensors mounted on the electric motor, b) generating a reactive torque reference based on the vibration-related signal, and c) controlling the electric motor based on the reactive torque reference and a main torque reference to counteract the mechanical vibrations.
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公开(公告)号：US20200076286A1
公开(公告)日：2020-03-05
申请号：US16121113
申请日：2018-09-04
申请人： ABB Schweiz AG
发明人： Chenjie Lin , Ghanshyam Shrestha , Mehanathan Pathmanathan , Pedro Rodriguez , Jan Mikael Westerlund , Tuomas Janhunen
摘要： Unique systems, methods, techniques and apparatuses of exciterless synchronous machines are disclosed. One exemplary embodiment is a fractional slot synchronous machine comprising a rotor including a first pole pair including a first pole including a first plurality of slots having a first center point and arranged on a first outer surface in a slot pattern; a second pole pair including a second pole including a second plurality of slots having a second center point and arranged on a second outer surface in the slot pattern; energy harvest windings arranged in a winding pattern within a portion of the first plurality of slots and arranged in the same winding pattern within a portion of the second plurality of slots, the energy harvest winding being structured to receive a harmonic power from the stator; and a rectifier structured to receive the harmonic power from the energy harvest winding.
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公开(公告)号：US09945907B2
公开(公告)日：2018-04-17
申请号：US15124948
申请日：2015-03-04
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Subrat Sahoo
IPC分类号： G01R31/34 , H02P29/024
CPC分类号： G01R31/34 , G01R31/343 , H02P29/0241
摘要： A method of determining a fault condition in a synchronous machine. The method includes a) obtaining a field current signal and a shaft voltage signal of the synchronous machine, b) transforming the field current signal and the shaft voltage signal to obtain a field current frequency spectrum and a shaft voltage frequency spectrum, and c) determining whether a fault condition is present, and in case a fault condition is present identifying a type of the fault condition, based on harmonic content of the field current frequency spectrum and harmonic content of the shaft voltage frequency spectrum, wherein c) includes comparing the harmonic content of the field current frequency spectrum with fault condition field current signature spectra and comparing the harmonic content of the shaft voltage frequency spectrum with fault condition shaft voltage signature spectra.
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公开(公告)号：US12088225B2
公开(公告)日：2024-09-10
申请号：US17812857
申请日：2022-07-15
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Rahul Kanchan , Omer Ikram Ul Haq , Qimao Liu , Ingo Stroka
CPC分类号： H02P23/0004 , G05D19/02
摘要： A field of electric drive devices and electric machines, such as electric motors and electric generators for industrial applications and more particularly to a method and an arrangement for controlling vibration of a variable frequency drive controlled electric machine. In the method for controlling vibration of a variable frequency drive controlled electric machine, the resonance frequency/frequencies and the stiffness are determined in a ramp up/ramp down test; amount of damping is determined in an impulse test; a mechanical transfer function is determined in a steady drive test; a vibration control model is determined utilizing said resonance frequency/frequencies, said stiffness, the amount of damping and the mechanical transfer function; and vibration is controlled utilizing the vibration control model.
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公开(公告)号：US11719569B2
公开(公告)日：2023-08-08
申请号：US17906470
申请日：2021-02-08
申请人： ABB Schweiz AG
CPC分类号： G01H1/003 , G01R31/343 , H02K1/246 , H02K2213/03
摘要： 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：US10581357B2
公开(公告)日：2020-03-03
申请号：US15977286
申请日：2018-05-11
申请人： ABB Schweiz AG
发明人： Chenjie Lin , Ghanshyam Shrestha , Mehanathan Pathmanathan , Pedro Rodriguez , Pasi Paloheimo , Tuomas Janhunen , Susanna Bäckström-Andersson , Eino Silander
摘要： Unique systems, methods, techniques and apparatuses of a rotating DC power supply are disclosed. One exemplary embodiment includes a first and second DC bus rail, a first and second leg, and a discharge resistor. The first leg includes a first semiconductor device and a second semiconductor device coupled in series at a first midpoint connection, the first semiconductor device being coupled to a first point on the first DC bus rail and the first midpoint connection being coupled to a field winding. The second leg includes a third semiconductor device and a fourth semiconductor device coupled in series at a second midpoint connection, the third semiconductor device being coupled to a second point on the first DC bus rail and the second midpoint connection being coupled to the field winding. The discharge resistor is operatively coupled to the first DC bus rail between the first point and the second point.
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公开(公告)号：US09823308B2
公开(公告)日：2017-11-21
申请号：US14066307
申请日：2013-10-29
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez
CPC分类号： G01R31/343 , G01H1/003 , H02P29/02
摘要： A method for discovering demagnetisation faults of a permanent magnet synchronous generator, such as a wind power generator. The method is performed during operation of the synchronous generator and includes measuring the vibration of the stator, performing a frequency analysis of the vibration, and deducing whether the generator suffers from demagnetization of a permanent magnet, from the vibration analysis. Moreover, geometric eccentricity faults and electric short circuit faults may also be detected from the vibration.
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