公开(公告)号：US20200083834A1

公开(公告)日：2020-03-12

申请号：US16613762

申请日：2018-05-18

申请人： PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

发明人： Hiroshi FUJIWARA ,  Toru TAZAWA ,  Fumitake SAEGUSA

IPC分类号： H02P23/04 ,  H02P29/40

摘要： An electric motor control device performing feedback control of a state amount of an electric motor or a load and being capable of changing a control bandwidth of a feedback control system includes: a notch filter arranged in the feedback control system and having a filter coefficient which is changeable; a notch control section which changes a notch frequency as a center frequency of the notch filter to remove an oscillation component attributable to mechanical resonance related to the electric motor; and a control coefficient setting section which changes at least one of the control bandwidth or the filter coefficient of the notch filter in accordance with the control bandwidth and the notch frequency to stabilize the feedback control system.

公开(公告)号：US10547258B2

公开(公告)日：2020-01-28

申请号：US16175938

申请日：2018-10-31

申请人： ROLLS-ROYCE PLC ,  ROLLS-ROYCE DEUTSCHLAND LTD & CO KG

发明人： Lucia Ciciriello ,  Kevin Smith

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

摘要： An electric machine coupled to rotating machinery includes a rotor and a stator, and the method of control of an electric machine and an electric machine control system. The method includes sensing one or more parameters indicative of one or more resonance conditions of the rotating machinery, and comparing the sensed parameter to a predetermined threshold to determine whether the rotating machinery is operating at the resonance condition. Where the rotating machinery is determined to be operating at the resonance condition, adjusting a magnetic field of one or both of the rotor and the stator to provide a predetermined torque to the rotating machine, to modulate the stiffness of the rotational machinery, and thereby move the resonance condition away from the current rotating machinery conditions.

公开(公告)号：US10457157B2

公开(公告)日：2019-10-29

申请号：US16067034

申请日：2017-01-05

申请人： NTN CORPORATION

发明人： Yui Masuda

IPC分类号： B60L15/20 ,  H02P23/04 ,  H02P29/40 ,  H02P6/10

摘要： The motor drive device includes: an electric motor (6); a controller (1) that controls a torque of the electric motor (6) or a quantity of state corresponding to the torque; and a torque transmitter that transmits the torque of the electric motor (6) to a wheel of a vehicle. The controller (1) includes a torque fluctuation inhibiting section (15) that inhibits torque fluctuation in the electric motor (6). The torque fluctuation inhibiting section (15) includes an execution determination section (15b) that determines whether or not to inhibit the torque fluctuation in the electric motor (6), based on a result of comparison between an estimated value of a torque fluctuation frequency in the electric motor (6), and one or both of transmission characteristics of the torque transmitter and vibration characteristics in the vehicle.

公开(公告)号：US10414287B2

公开(公告)日：2019-09-17

申请号：US15501557

申请日：2015-08-06

申请人： DENSO CORPORATION ,  NISSAN MOTOR CO., LTD.

发明人： Syo Hashimoto ,  Shuichi Orita

IPC分类号： B60L15/20 ,  H02P29/00 ,  H02P27/06 ,  H02P29/028 ,  H02P23/04 ,  B60L50/51 ,  H02P29/032

摘要： A control apparatus for a rotary electric machine extracts, based on a rotational speed of a rotating member, a vibration component included in the rotational speed of the rotating member, the vibration component being based on vibrations of a drivetrain. The control apparatus calculates, according to the extracted vibration component, compensation torque for compensating the vibrations of the drivetrain. The control apparatus performs drive control of the rotary electric machine according to the compensation torque. The control apparatus performs suppression to suppress the rotational speed of the rotating member from changing due to change of a speed change ratio.

公开(公告)号：US20190222160A1

公开(公告)日：2019-07-18

申请号：US16327070

申请日：2017-07-12

申请人： Hitachi Automotive Systems, Ltd.

发明人： Takeshi YOSHIDA ,  Takafumi HARA ,  Katsuhiro HOSHINO ,  Kazuto OYAMA

IPC分类号： H02P27/08 ,  B60L50/51 ,  H02P23/04

摘要： A control device and a control method for a rotary electric motor, and a rotary electric motor drive system capable of reliably suppressing vibration of the rotary electric motor are provided. A rotary electric motor is controlled by PWM at a predetermined carrier frequency, and in a case where a vibration frequency in a space zero-order eigenmode of the rotary electric motor and a frequency of a frequency component of electromagnetic exciting force that generates the eigenmode overlap with each other, a value of the carrier frequency is switched from a first value to a second value different from the first value.

公开(公告)号：US20180375455A1

公开(公告)日：2018-12-27

申请号：US15776518

申请日：2016-11-10

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Shinichi ISHIZEKI

IPC分类号： H02P23/04 ,  H02P27/06 ,  H02M5/458 ,  H02M7/5387

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.

公开(公告)号：US10132304B2

公开(公告)日：2018-11-20

申请号：US15168989

申请日：2016-05-31

申请人： MAN TRUCK & BUS AG

发明人： Andreas Hase

IPC分类号： F04B35/04 ,  B60K6/445 ,  B60L15/02 ,  F04B49/06 ,  H02P23/04 ,  B60T13/26 ,  F04B27/00 ,  F04C18/16 ,  F04C18/344 ,  F04C28/08 ,  F04C29/00 ,  H02P23/00 ,  G05D16/20

摘要： A method for controlling an electrical drive of an electrically driven air compressor of a motor vehicle and a corresponding control circuit. A prevailing load torque of the air compressor that is applied at a drive shaft of the compressed air compressor is estimated as a function of at least one operating parameter and is fed forward as an estimated disturbance variable to the control circuit of the electrical drive to reduce a control error produced as a result of the prevailing load torque.

公开(公告)号：US09906180B2

公开(公告)日：2018-02-27

申请号：US15478697

申请日：2017-04-04

申请人： NIDEC CONTROL TECHNIQUES LIMITED

发明人： Colin Hargis

IPC分类号： H02P23/14 ,  H02P27/06 ,  H02P23/04

CPC分类号： H02P23/14 ,  H02P23/04 ,  H02P27/06 ,  H02P2205/03

摘要： An electromechanical system includes an inverter drive, a component arranged during operation to generate a variable force having one or more periodic frequency components, and processing circuitry arranged to determine the power output of the inverter drive, measure a difference between the power output and a reference power output, and control an output frequency of the inverter drive as a function of the measured difference, so as to stabilise the power output during operation of the component. Other example electromechanical systems, inverter drives and methods are also disclosed.

公开(公告)号：US20170338717A1

公开(公告)日：2017-11-23

申请号：US15527240

申请日：2015-11-13

申请人： MAGSTRÖM AB

发明人： Urban LUNDIN ,  J Jose PEREZ-LOYA ,  Johan ABRAHAMSSON

IPC分类号： H02K7/09 ,  H02P21/06 ,  H02P23/04 ,  H02P23/10

CPC分类号： H02P21/06 ,  H02K3/28 ,  H02K7/09 ,  H02P23/04 ,  H02P23/10

摘要： An electrical machine (1) comprises a rotor (20), a stator (10), a rotor power supply (50), at least one sensor (70) and a rotor magnetization control arrangement (60). The rotor has rotor windings (22) for controlling magnetization of rotor magnetic poles (24). The sensor is arranged to measure a parameter associated with a relative force between the stator and the rotor. The rotor magnetization control arrangement is communicationally connected to the sensor for receiving a signal representing the measured parameter. The rotor magnetic poles are divided into at least two groups (23). The rotor magnetization control arrangement is arranged for controlling the magnetization of the groups individually by providing a respective individually controllable rotor current. The rotor magnetization control arrangement is arranged to individually control the rotor currents in dependence of the signal representing the measured parameter. A method for controlling such an electrical machine is also disclosed.

公开(公告)号：US09647592B2

公开(公告)日：2017-05-09

申请号：US14856050

申请日：2015-09-16

申请人： Control Techniques Limited

发明人： Colin Hargis

IPC分类号： H02P27/04 ,  H02P23/04 ,  H02P27/06 ,  H02P23/14

CPC分类号： H02P23/14 ,  H02P23/04 ,  H02P27/06 ,  H02P2205/03

摘要： An electromechanical system includes an inverter drive, a component arranged during operation to generate a variable force having one or more periodic frequency components, and processing circuitry arranged to determine the power output of the inverter drive, measure a difference between the power output and a reference power output, and control an output frequency of the inverter drive as a function of the measured difference, so as to stabilize the power output during operation of the component. Other example electromechanical systems, inverter drives and methods are also disclosed.