公开(公告)号：US11674547B2

公开(公告)日：2023-06-13

申请号：US16173145

申请日：2018-10-29

申请人： ROLLS-ROYCE PLC

发明人： Lucia Ciciriello ,  Mark S King

IPC分类号： F02C6/00 ,  F01D25/16 ,  F01D25/04 ,  F16C19/52 ,  H02P23/04 ,  F16C32/06 ,  F16C19/00 ,  F16C32/04 ,  F16C17/02 ,  F16C17/03 ,  H02P9/10 ,  B64D41/00 ,  F01D15/10 ,  F04D29/059 ,  F16C41/00 ,  H02P101/25 ,  F16C19/06

CPC分类号： F16C19/527 ,  B64D41/00 ,  F01D15/10 ,  F01D25/04 ,  F01D25/164 ,  F02C6/00 ,  F04D29/059 ,  F16C17/02 ,  F16C17/024 ,  F16C17/026 ,  F16C17/028 ,  F16C17/03 ,  F16C19/00 ,  F16C32/0442 ,  F16C32/0444 ,  F16C32/0446 ,  F16C32/0476 ,  F16C32/0489 ,  F16C32/0614 ,  F16C41/004 ,  H02P9/105 ,  H02P23/04 ,  F05D2220/323 ,  F05D2220/76 ,  F05D2240/51 ,  F05D2270/333 ,  F16C19/06 ,  F16C2233/00 ,  F16C2360/23 ,  F16C2380/27 ,  H02P2101/25

摘要： A bearing arrangement includes a shaft, at least one contact bearing and at least one non-contact bearing and a controller. The controller is configured to control a magnitude of a restoring force applied to the shaft by the non-contact bearing in accordance with a sensed parameter such that a stiffness of the shaft is modified such that one or more resonance frequencies of the shaft are moved away from one or more external forcing frequencies.

公开(公告)号：US20230066812A1

公开(公告)日：2023-03-02

申请号：US17792598

申请日：2020-12-04

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Mitsuru MATSUBARA ,  Kazuaki TOBARI ,  Yuuri TAKANO ,  Yusuke UEI ,  Tetsuo YANADA ,  Hironori OHASHI

IPC分类号： H02P23/04 ,  H02P23/14

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.

公开(公告)号：US11594944B2

公开(公告)日：2023-02-28

申请号：US16930788

申请日：2020-07-16

申请人： ABB Schweiz AG

发明人： Áron Szücs ,  Juhani Mantere ,  Jahirul Islam

IPC分类号： H02K16/04 ,  H02K1/12 ,  H02K1/276 ,  H02K21/14 ,  H02K29/03 ,  H02P23/04 ,  H02P27/06

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.

公开(公告)号：US11482961B2

公开(公告)日：2022-10-25

申请号：US16471786

申请日：2018-01-17

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Katsuhiro Hoshino ,  Takafumi Hara ,  Masaru Yamasaki ,  Yosuke Tanabe ,  Masanori Watanabe

IPC分类号： H02P23/04 ,  H02P27/08

摘要： An object of the present invention is to effectively reduce vibration or noise caused by a motor. An inverter circuit 300 generates an alternating current from a direct current supplied from a direct current power supply 10 by using a plurality of IGBTs 311 which are switching elements, supplies the generated alternating current to a motor 100, and drives the motor 100. This alternating current includes a fundamental harmonic current corresponding to a rotational speed of the motor 100, and a harmonic current of a switching operation of the IGBTs 311. A controller 200 controls a second phase such that a first phase and the second phase are not superimposed on each other at a predetermined motor rotational speed, the first phase being a phase of an excitation force cyclically produced in the motor 100 by the fundamental harmonic current, and the second phase being a phase of an excitation force cyclically produced in the motor 100 by the harmonic current.

公开(公告)号：US20220266700A1

公开(公告)日：2022-08-25

申请号：US17632833

申请日：2020-07-21

申请人： Nidec Corporation

发明人： Linfeng LAN ,  Tomohiro FUKUMURA ,  Tomonari MORI

IPC分类号： B60L15/20 ,  H02P23/04

摘要： A torque control of an in-vehicle motor is performed in consideration of a slip prevention control. Filtering processing is performed by a first filter processor on a high-order torque command value from a high-order device, and filtering processing is performed by a second filter processor on an angular velocity detected by an angular velocity detector. A driving torque command value to drive an electric motor is calculated based on filtering processing results. Each of the filter processors changes a time constant of the filtering processing according to a road surface friction coefficient as disturbance information.

公开(公告)号：US11336217B2

公开(公告)日：2022-05-17

申请号：US16958868

申请日：2018-12-29

申请人： CSMC TECHNOLOGIES FAB2 CO., LTD. ,  SOUTHEAST UNIVERSITY

发明人： Rui Zhong ,  Mingshu Zhang ,  Sen Zhang ,  Jinyu Xiao ,  Wei Su ,  Weifeng Sun ,  Longxing Shi

IPC分类号： H02P25/08 ,  H02P23/04

摘要： A method and an apparatus for reducing noise of a switched reluctance motor, includes: supplying a PWM signal as a driving signal to a driving circuit of a switched reluctance motor; and varying a carrier frequency of the PWM signal as an operation period of the switched reluctance motor varies; if the switched reluctance motor changes phase, determining that the operation period of the switched reluctance motor varies.

公开(公告)号：US20220112904A1

公开(公告)日：2022-04-14

申请号：US17420800

申请日：2019-01-30

申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

发明人： Naomichi SHIBATA ,  Michio KYOYA

IPC分类号： F04D29/66 ,  F04D25/06 ,  H02P23/04

摘要： With an electric compressor including a rotational shaft, a compressor wheel disposed on the rotational shaft, and an electric motor for applying a rotational force to the rotational shaft including a rotor fixed to the rotational shaft, and a stator disposed around the rotor, for applying the rotational force to the rotor by an electromagnetic force, a vibration/noise reduction device includes a detector for detecting a frequency related to a vibration of the stator, and a signal generator for generating a vibration signal that has a frequency of a predetermined integral multiple of an electrical angle frequency, which is obtained from the frequency detected by the detector, and has a signal wave attenuating the vibration of the stator, and a vibrator for vibrating the electric compressor based on the vibration signal.

公开(公告)号：US11247569B2

公开(公告)日：2022-02-15

申请号：US16837217

申请日：2020-04-01

申请人： SUBARU CORPORATION

发明人： Keigo Yamada ,  Shogo Machida

IPC分类号： B60L15/20 ,  B60W30/20 ,  H02P23/04 ,  B60W20/00

摘要： A damping control device for an electric vehicle including a motor and a transmission in a drive system between the motor and a drive wheel includes a detector, a bandpass filter, first to third calculators, and a controller. The detector detects a rotation speed of the motor. The bandpass filter passes a vibration component included in the detected motor rotation speed, in a resonance frequency band of the drive system. The first calculator calculates a damping torque for damping resonance of the drive system with a motor torque, based on the passed vibration component. The second calculator calculates, as a damping torque offset value, an average value of the calculated damping torque for a predetermined time. The third calculator calculates a target damping torque. The controller controls a drive state of the motor.

公开(公告)号：US20220029574A1

公开(公告)日：2022-01-27

申请号：US17381495

申请日：2021-07-21

申请人： Robert Bosch GmbH

发明人： Hoon Lee

IPC分类号： H02P27/08 ,  H02P23/04 ,  H02M7/5395

摘要： Provided is a noise remover of a PWM motor without a frequency control filter in a PWM control motor, and more particularly, includes a micom formed in the vehicle terminal and converting to and transmitting the frequency avoiding the radio frequency; a frequency filter for suppressing the noise converted by the micom; a motor part for transmitting the frequency that the frequency filter outputs to a vehicle motor, and operating the motor; and a pulse modulation/demodulation control part for controlling the rotation amount of the vehicle motor inside the motor part, which are divided roughly as four, and rotate a rotor of the motor part without noise by selectively applying the frequency which is not overlapped with radio frequency to a first FET, a second FET, a third FET, and a fourth FET.

公开(公告)号：US20210146991A1

公开(公告)日：2021-05-20

申请号：US16627933

申请日：2017-07-31

申请人： Mitsubishi Electric Corporation

发明人： Akira FURUKAWA

IPC分类号： B62D5/04 ,  H02P27/08 ,  H02P21/05 ,  H02P21/22 ,  H02P23/04

摘要： A control device for an AC rotary machine includes: a DC power supply; an inverter; a magnetic flux generator; an angle detector; and a control arithmetic unit; wherein the control arithmetic unit is configured to: calculate, based on a positional relationship between a current path and the angle detector, a correction signal for correcting signal errors of a cosine signal and a sine signal, which are caused by a noise magnetic flux component due to at least one of a DC current flowing between the DC power supply and the inverter and multi-phase AC currents flowing between the inverter and armature windings; and control the inverter by using angle information obtained from values after the correction by the correction signal.