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1.发明授权公开(公告)号：US09829540B2
公开(公告)日：2017-11-28
申请号：US15157644
申请日：2016-05-18
Applicant: ABB Schweiz AG
Inventor： Luca Peretti , Mehanathan Pathmanathan , Omer Ikram Ul Haq , Subrat Sahoo
CPC classification number: G01R31/34 , G01M5/0066 , G01M13/028 , G01M13/045
Abstract: A method for determining an undesired condition in an electrical drive system including an electrical machine and an electrical drive, wherein the method includes a) obtaining a measured signal of an electrical or mechanical parameter, b) obtaining a frequency spectrum of the measured signal, that contains a measured frequency component, c) determining whether the measured frequency component is within a predetermined distance from a trend line, which trend line is associated with only one specific frequency component of the electrical or mechanical parameter present during a specific undesired condition, d) on the condition that the measured frequency component is within the predetermined distance from the trend line increasing a counter associated with the trend line, e) repeating steps a) to d), wherein in case the counter reaches a predetermined number determining that the electrical drive system is subjected to the undesired condition associated with the trend line.
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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
Applicant: ABB Schweiz AG
Inventor： Pedro Rodriguez , Rahul Kanchan , Omer Ikram Ul Haq , Qimao Liu , Ingo Stroka
CPC classification number: H02P23/0004 , G05D19/02
Abstract: 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：US11121657B2
公开(公告)日：2021-09-14
申请号：US16746331
申请日：2020-01-17
Applicant: ABB Schweiz AG
Inventor： Omer Ikram Ul Haq
Abstract: A method is described for estimating a position of a rotor in a synchronous electric machine having a rotor. The method has the steps of: inputting the initial rotor angle into a power converter, injecting a first voltage waveform with a first fundamental frequency into the power converter,—injecting a second voltage waveform with a second fundamental frequency into the power converter, the second voltage waveform being offset with an offset angle δθ, determining a resulting second axis current in the power converter at the second fundamental frequency, adjusting, for each torque value, the offset angle δθ so that the resulting second axis current at the second fundamental frequency becomes zero, and estimating the position of the rotor based on the plurality of offset angle values.
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公开(公告)号：US20240333187A1
公开(公告)日：2024-10-03
申请号：US18604667
申请日：2024-03-14
Applicant: ABB Schweiz AG
Inventor： Omer Ikram Ul Haq , Rahul Kanchan , Pedro Rodriguez
Abstract: A method of identifying parameters of a motor system having an electric motor assembly and a control system, for vibration reduction in the electric motor assembly, the method including: a) sweeping a frequency of an oscillating reactive torque injected into the electric motor, b) determining a natural frequency of the motor system, the natural frequency being the frequency at which the oscillating reactive torque produces a maximum amplitude of a vibration-related parameter obtained based on vibration-related measurements by sensors mounted to the electric motor, c) incrementally increasing a magnitude of reactive torque oscillating at the natural frequency, injected to the electric motor, d) obtaining a magnitude of the vibration-related parameter for each magnitude of the reactive torque injected in step c), and e) determining, for each magnitude of the injected reactive torque, a gain and a phase response of the motor system, the gain being determined based on the magnitude of the injected reactive torque and the corresponding magnitude of the vibration-related parameter, and the phase response being determined based on a phase angle of the injected reactive torque and a phase angle of the corresponding vibration-related parameter.
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公开(公告)号：US20230025973A1
公开(公告)日：2023-01-26
申请号：US17812857
申请日：2022-07-15
Applicant: ABB Schweiz AG
Inventor： Pedro Rodriguez , Rahul Kanchan , Omer Ikram Ul Haq , Qimao Liu , Ingo Stroka
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20210328532A1
公开(公告)日：2021-10-21
申请号：US17231708
申请日：2021-04-15
Applicant: ABB Schweiz AG
Inventor： Omer Ikram Ul Haq
Abstract: According to an aspect, there is provided an apparatus for performing angular position error estimation. The apparatus operates (601) a synchronous motor (111) according to a pre-defined pulsating torque signal using a sensorless vector control method with high-frequency voltage injection. The pre-defined pulsating torque signal has a zero mean and corresponds to a torque operating point. The apparatus measures (602) a first value of an estimated angular position at a first time instance corresponding substantially to an end point of the pre-defined pulsating torque signal and second values of the estimated angular position and an estimated angular speed at a second time instance occurring after the first time instance. Based on the measured values, the apparatus estimates (603) an error in the estimated angular position and stores (604) the error to a lookup table. After performing said steps for one or more pre-defined pulsating torque signals, the apparatus operates (607) the synchronous motor (111) using the lookup table for angular position error correction.
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公开(公告)号：US20240405704A1
公开(公告)日：2024-12-05
申请号：US18674130
申请日：2024-05-24
Applicant: ABB Schweiz AG
Inventor： Lennart Harnefors , Omer Ikram Ul Haq , Sjoerd Bosga
IPC: H02P23/04
Abstract: A method of reducing vibrations in an electric motor including a rotor and a stator, by means of an active vibration controller, AVC, the method includes: a) determining whether one of an angular rotational speed of the rotor and an angular stator frequency multiplied by two is within a critical range including a mechanical resonance frequency of a motor assembly including the electric motor and its load, b) i) setting an oscillating incremental torque angular frequency of the AVC to the angular rotational speed of the rotor if the angular rotational speed of the rotor is within the critical range, or ii) setting the oscillating incremental torque angular frequency to the angular stator frequency multiplied by two if the angular stator frequency multiplied by two is within the critical range, iii) generating an oscillating incremental torque reference using the AVC with the oscillating incremental torque angular frequency set in step b i) or b ii), and iv) controlling the electric motor based on a sum of the oscillating incremental torque reference and an electrical torque reference; or c) i) deactivating the AVC if the angular rotational speed of the rotor and the angular stator frequency multiplied by two is outside the critical range, and ii) controlling the electric motor based on the electrical torque reference.
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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
Applicant: ABB Schweiz AG
Inventor： Rahul Kanchan , Omer Ikram Ul Haq , Pedro Rodriguez
CPC classification number: H02P23/04 , H02P23/0004 , H02P23/14
Abstract: 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：US11342871B2
公开(公告)日：2022-05-24
申请号：US17231708
申请日：2021-04-15
Applicant: ABB Schweiz AG
Inventor： Omer Ikram Ul Haq
Abstract: According to an aspect, there is provided an apparatus for performing angular position error estimation. The apparatus operates (601) a synchronous motor (111) according to a pre-defined pulsating torque signal using a sensorless vector control method with high-frequency voltage injection. The pre-defined pulsating torque signal has a zero mean and corresponds to a torque operating point. The apparatus measures (602) a first value of an estimated angular position at a first time instance corresponding substantially to an end point of the pre-defined pulsating torque signal and second values of the estimated angular position and an estimated angular speed at a second time instance occurring after the first time instance. Based on the measured values, the apparatus estimates (603) an error in the estimated angular position and stores (604) the error to a lookup table. After performing said steps for one or more pre-defined pulsating torque signals, the apparatus operates (607) the synchronous motor (111) using the lookup table for angular position error correction.
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公开(公告)号：US20200235687A1
公开(公告)日：2020-07-23
申请号：US16746331
申请日：2020-01-17
Applicant: ABB Schweiz AG
Inventor： Omer Ikram Ul Haq
Abstract: A method is described for estimating a position of a rotor in a synchronous electric machine having a rotor. The method has the steps of: inputting the initial rotor angle into a power converter, injecting a first voltage waveform with a first fundamental frequency into the power converter,—injecting a second voltage waveform with a second fundamental frequency into the power converter, the second voltage waveform being offset with an offset angle δθ, determining a resulting second axis current in the power converter at the second fundamental frequency, adjusting, for each torque value, the offset angle δθ so that the resulting second axis current at the second fundamental frequency becomes zero, and estimating the position of the rotor based on the plurality of offset angle values.
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