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公开(公告)号：US11264929B2
公开(公告)日：2022-03-01
申请号：US16574606
申请日：2019-09-18
发明人： Robert J. Miklosovic , Brian Fast
IPC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：US11088644B1
公开(公告)日：2021-08-10
申请号：US17188189
申请日：2021-03-01
发明人： Paul Carvell
摘要： A variety of methods, controllers and electric machine systems are described that facilitate pulsed control of electric machines to improve the energy efficiency of the electric machine when conditions warrant. Selected transitions between pulsing output levels are controlled to provide a cubic or higher order transition torque profile. In various implementations, cubic, quintic or higher order transition profiles are use. The use of such transition torque profiles can improve NVH characteristics of the electric machine while providing energy efficient pulse transitions.
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公开(公告)号：US20200350809A1
公开(公告)日：2020-11-05
申请号：US16930788
申请日：2020-07-16
申请人： ABB Schweiz AG
发明人： Áron Szücs , Juhanl Mantere , Jahirul Islam
摘要： 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.
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公开(公告)号：US20200313594A1
公开(公告)日：2020-10-01
申请号：US16733259
申请日：2020-01-03
发明人： Linfeng LAN , Tomonari MORI , Ryo ITABA , Tokuji TATEWAKI
IPC分类号： H02P23/04
摘要： A control device includes angular velocity detecting circuitry, feedback circuitry, torque command calculation circuitry, a limiter, a drive controller, and correction circuitry. The angular velocity detecting circuitry detects an angular velocity of a motor. The feedback circuitry obtains a feedback value from the angular velocity. The torque command calculation circuitry obtains a torque command value according to a superordinate torque command value supplied from a superordinate device and the feedback value. The limiter limits the torque command value obtained by the torque command calculation circuitry so as not to exceed a preset torque upper limit value. The drive controller performs a drive control of the motor according to the limited torque command value. The correction circuitry corrects the superordinate torque command value or the torque command value according to the feedback value and the superordinate torque command value.
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公开(公告)号：US10734933B2
公开(公告)日：2020-08-04
申请号：US16093192
申请日：2017-04-27
摘要： A motor control apparatus includes: an oscillation instruction unit outputting an oscillation instruction signal; a filter unit performing filtering processing having frequency characteristic defined by a filter parameter; an oscillation forcing unit configuring a control loop in an oscillation period together with the filter unit, a current control unit, a motor, and a velocity calculation unit and causing the control loop to oscillate during the oscillation period in which the oscillation instruction signal is in the on-state; an amplitude evaluation unit acquiring, as an evaluation value, the amplitude ratio of an input signal to an output signal of the oscillation forcing unit when the control loop oscillates; and a filter adjustment unit comparing evaluation values provided when filter parameter candidates are set in the filter unit sequentially, selecting one of the filter parameters achieving a smaller evaluation value, and setting the selected filter parameter in the filter unit.
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公开(公告)号：US10554162B2
公开(公告)日：2020-02-04
申请号：US16167953
申请日：2018-10-23
摘要： Methods and systems are provided to damp oscillations in a synchronous alternating current (AC) grid. Current may be received from the synchronous AC grid through a phase of an n-phase supply line. The current received from the synchronous AC grid is supplied to a phase of the synchronous motor. A sub-harmonic oscillation may be detected in the current received from the synchronous AC grid. The sub-harmonic oscillation may be damped by: shunting a portion of the current away from the phase of the synchronous motor during a first time period in an upper-half of the sub-harmonic oscillation, and/or supplying compensation current from a partial power converter to the phase of the synchronous motor during a second time period in a lower-half of the sub-harmonic oscillation.
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公开(公告)号：US10483881B2
公开(公告)日：2019-11-19
申请号：US15118264
申请日：2015-02-17
IPC分类号： A61B34/30 , A61B34/37 , H02P6/10 , H02P6/08 , H02P23/04 , H02P23/00 , A61B34/35 , A61B90/00 , A61B17/00 , H02P6/14
摘要： A method for torque compensation of a motor associated with a medical instrument includes determining a torque profile for a motor, the torque profile defining torque output as a function of rotor angle and during operation of the motor, compensating for deviations in the torque profile by adjusting an input signal to the motor, the compensating being based on the torque profile and rotor position.
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公开(公告)号：US10243498B2
公开(公告)日：2019-03-26
申请号：US15776518
申请日：2016-11-10
发明人： Shinichi Ishizeki
IPC分类号： H02M1/14 , H02P23/04 , H02M7/5387 , H02M5/458 , H02P27/06
摘要： Ripple power having a first variation range is input into a DC link (DC power supply lines). Buffer power is provided and received between the DC link and a power buffer circuit, so that the DC link outputs DC power having a second variation range smaller than the first variation range. An inverter receives the DC power as an input, and outputs AC power to a motor. A power control unit controls the power buffer circuit and the inverter on the basis of a compensation rate that sets the second variation range. A compensation rate setting unit performs a setting in which the compensation rate when a rotational speed of the motor belongs to any of a plurality of first predetermined ranges is higher than the compensation rate when the rotational speed belongs to a second predetermined range other than the plurality of first predetermined ranges.
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公开(公告)号：US20190058429A1
公开(公告)日：2019-02-21
申请号：US16167953
申请日：2018-10-23
摘要： Methods and systems are provided to damp oscillations in a synchronous alternating current (AC) grid. Current may be received from the synchronous AC grid through a phase of an n-phase supply line. The current received from the synchronous AC grid is supplied to a phase of the synchronous motor. A sub-harmonic oscillation may be detected in the current received from the synchronous AC grid. The sub-harmonic oscillation may be damped by: shunting a portion of the current away from the phase of the synchronous motor during a first time period in an upper-half of the sub-harmonic oscillation, and/or supplying compensation current from a partial power converter to the phase of the synchronous motor during a second time period in a lower-half of the sub-harmonic oscillation.
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公开(公告)号：US09882519B2
公开(公告)日：2018-01-30
申请号：US14648086
申请日：2014-12-19
申请人： NSK LTD.
发明人： Tomohiro Miura , Masahiro Maeda , Yousuke Imamura
摘要： A motor control apparatus that calculates duty command values of respective phases for controlling currents of a motor by means of a control calculation, forms PWM-signals in correspondence to the duty command values, drives the motor by means of an inverter based on the PWM-signals, and which is provided a rotation sensor to detect a motor angle of the motor.
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