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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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2.发明公开公开(公告)号：US20240171104A1
公开(公告)日：2024-05-23
申请号：US18549487
申请日：2022-03-08
申请人： Robert Bosch GmbH
发明人： Timo Kuehn , Tobias Wuerth
IPC分类号： H02P23/04
CPC分类号： H02P23/04
摘要： The invention is based on a method for controlling a motor, in particular an electrically commutated motor, wherein at least one method step comprises using a control loop (14) to ascertain a controlled variable (16) on the basis of which a variation in an operating parameter of the motor is at least partially compensated for.
It is proposed that the method comprises at least one adjustment step (18) that comprises logically combining the ascertained controlled variable (16) with an adjustment variable (20) in order to counteract at least one harmonic oscillation of the operating parameter.-
公开(公告)号：US11831262B2
公开(公告)日：2023-11-28
申请号：US17792598
申请日：2020-12-04
发明人： Mitsuru Matsubara , Kazuaki Tobari , Yuuri Takano , Yusuke Uei , Tetsuo Yanada , Hironori Ohashi
摘要： This motor control device receives a speed command from an upper layer system control device having a position controller, the motor control device having: a position command estimator that calculates an estimate of a position command on the basis of the speed command and a motor axis position response; and a speed command generator that generates an actual speed command on the basis of the estimate so that an end section of a machine connected to the motor does not oscillate, wherein the actual speed command is output from the speed command generator to a speed controller.
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公开(公告)号：US11777427B2
公开(公告)日：2023-10-03
申请号：US17597282
申请日：2020-06-09
发明人： Mitsuru Matsubara , Kazuaki Tobari , Yuuri Takano , Yusuke Uei , Tetsuo Yanada
摘要： An estimated value of frequency of a vibration component for automatically adjusting a control unit that suppresses resonance characteristics of a machine is stably and reliably estimated without depending on the magnitude of amplitude of the vibration component and without risk of arithmetic overflow. A motor control device including an automatic adjustment device that adaptively adjusts a controller included in a motor control system based on a frequency of a vibration component superimposed on a response of the motor control system, the automatic adjustment device including a vibration extraction unit that receives the response of the motor control system and extracts the vibration component from the response of the motor control system; a notch filter unit that receives the vibration component from the vibration extraction unit; an encoding unit; a limiter unit that receives an output of the notch filter unit; an adaptive updating unit; and a unit conversion unit.
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公开(公告)号：US11682994B2
公开(公告)日：2023-06-20
申请号：US17682439
申请日：2022-02-28
发明人： Robert J. Miklosovic , Brian Fast
IPC分类号： H02P23/04
CPC分类号： H02P23/04
摘要： A system includes a motor configured to be coupled to a non-rigid load and a control system disposed within, or communicatively coupled to, a drive system configured to control an operation of the motor. The control system includes a processor and a memory accessible by the processor. The memory stores instructions that, when executed by the processor, cause the processor to generate a smooth move input profile to control the operation of the motor based on inputs specifying a desired operation of the motor, apply a notch filter having a notch filter frequency to the smooth move input profile to produce a filtered smooth move input profile, and send a command to the drive system based on the filtered smooth move input profile, wherein the command is configured to adjust the operation of the motor.
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公开(公告)号：US11661034B2
公开(公告)日：2023-05-30
申请号：US16298749
申请日：2019-03-11
申请人： DENSO CORPORATION
发明人： Kota Mizuno
CPC分类号： B60S1/08 , H02P23/04 , H02P23/183 , B60S1/0803
摘要： A wiper motor control circuit controls a drive circuit such that an actual speed of a wiper speed computed based on change in a rotation angle of an output shaft of the wiper motor detected by a rotation angle sensor that detects the rotation angle becomes a target speed corresponding to a position of a wiper blade indicated by the rotation angle detected by the rotation angle sensor. The wiper motor control circuit also controls the drive circuit so as to apply a braking current in the wiper motor when the actual speed has exceeded a threshold value when the rotation angle detected by the rotation angle sensor indicates a return position of the wiper blade.
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公开(公告)号：US20230006589A1
公开(公告)日：2023-01-05
申请号：US17780408
申请日：2020-10-21
申请人： Robert Bosch GmbH
发明人： Michele Hirsch , Sebastian Paulus , Wei-Lung Lee
摘要： The invention relates to a method (400) for calibrating a controller of an electric machine (120). The method comprises the following steps: specifying (410) a first signal (S_1) for generating a sinusoidal phase current for energising a winding of an electric machine (120); superposing (420) the first signal (S_1) with a test signal (S_Test_i) in order to generate a harmonic oscillation with a predetermined excitation amplitude and/or phase position relative to the phase current, which harmonic oscillation superposes the phase current; detecting (430) a response signal (S_Antw_i), resulting from the superposition of the phase current and the harmonic oscillation, by means of a sensor (130); determining (450) a calibrated signal (S_kal) for generating a harmonic oscillation with a predetermined excitation amplitude and a phase position relative to the phase current on the basis of a determined minimum of a response plane (A_Antw); operating (460) the controller (110) of the electric machine (120) on the basis of the determined minimum
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公开(公告)号：US11466547B2
公开(公告)日：2022-10-11
申请号：US16669892
申请日：2019-10-31
IPC分类号： E21B43/12 , H02P23/04 , E21B47/008 , E21B41/00
摘要： Permanent magnet motors (PMMs) can develop oscillations during motor startup that can cause damage to electric submersible pump (ESP) components. A system and method are presented for identifying mechanical and/or electrical caused oscillations in a PMM through the analysis of oscillations in current and torque measurements. A control system within a surface motor controller receives current and/or torque measurements from downhole sensors. The control system employs one or more algorithms designed to detect oscillations in the measurements. Upon detecting oscillations that are consistent with oscillations in the motor from mechanical or electrical causes, the control system automatically initiates protective action to prevent damage to the ESP components.
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公开(公告)号：US11387761B2
公开(公告)日：2022-07-12
申请号：US17103820
申请日：2020-11-24
发明人： Zoran Vrankovic , Gennadi Sizov , Gary L. Skibinski , David A. Figie , Yao Da , Todd M. Oestreich , Adam M. Shea
摘要： A motor drive that outputs a sinusoidal waveform utilizes power switching devices operable at high switching frequencies. The switching devices may be operated, for example, between twenty kilohertz and one megahertz. A first filter is included at the output of the motor drive which has a bandwidth selected to attenuate voltage components at the output which are at the switching frequency or multiples thereof such that the output voltage waveform is generally sinusoidal. Additional filtering is included within the motor drive to establish a circulation path for common mode currents within the motor drive. Further, a shield is provided adjacent to those components within the motor drive that may experience voltage or current waveforms at the switching frequency or multiples thereof to cause radiated emissions to establish eddy currents within the EMI shield rather than passing through the shield into the environment.
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公开(公告)号：US11319963B2
公开(公告)日：2022-05-03
申请号：US15992747
申请日：2018-05-30
发明人： Alan H. Epstein
摘要： A compressor surge control system includes a rotor system with at least one compressor section and at least one turbine section operably coupled to a shaft. The compressor surge control system also includes one or more rotor system sensors configured to collect a plurality of sensor data from the rotor system, an electric motor operably coupled to the rotor system, and a controller. The controller is operable to monitor the one or more rotor system sensors while the rotor system is rotating. The controller determines whether the plurality of sensor data from the one or more rotor system sensors is indicative of an early-stage compressor surge oscillation. A surge control torque is determined to diminish the early-stage compressor surge oscillation of the rotor system. The electric motor is commanded to apply the surge control torque to the rotor system.
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