公开(公告)号：US08988027B2

公开(公告)日：2015-03-24

申请号：US13792201

申请日：2013-03-11

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Shingo Fukumaru ,  Shinya Morimoto ,  Hideaki Iura ,  Akira Yamazaki

IPC: H02P1/04 ,  H02P21/14 ,  H02P21/00

CPC classification number: H02P21/146 ,  H02P21/18 ,  H02P21/20 ,  H02P21/24

Abstract: A motor control apparatus according to the embodiment includes a rotational position estimating unit, a change amount estimating unit, and an inductance estimating unit. The rotational position estimating unit estimates a rotational position of a rotor from a motor parameter including a q-axis inductance of a motor on a basis of an output current to the motor and a voltage reference. The change amount estimating unit estimates a change amount of an output torque with respect to a current phase change of the motor corresponding to a high frequency signal whose frequency is higher than a drive frequency of the motor. The inductance estimating unit estimates an inductance value that obtains a maximum torque on a basis of the change amount as the q-axis inductance.

Abstract translation: 根据实施例的电动机控制装置包括旋转位置估计单元，变化量估计单元和电感估计单元。 旋转位置估计单元基于电动机的输出电流和电压基准从包括电动机的q轴电感的电动机参数估计转子的旋转位置。 变化量估计单元估计与频率高于电动机的驱动频率的高频信号相对应的电动机的当前相位变化的输出转矩的变化量。 电感估计单元估计基于作为q轴电感的变化量获得最大转矩的电感值。

公开(公告)号：US10965238B2

公开(公告)日：2021-03-30

申请号：US15461770

申请日：2017-03-17

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Shingo Fukumaru ,  Hideaki Iura ,  Shinya Morimoto ,  Akira Yamazaki

IPC: H02P21/20 ,  H02P27/08 ,  H02M5/458

Abstract: A power conversion apparatus includes a power converter circuit that outputs an AC power to an electric motor, and circuitry that controls the power converter circuit to add a first change, accompanying a change of a power generated by the electric motor, to a first phase angle, which is a phase angle of a magnetic flux direction of the electric motor corresponding to the AC power, extracts a component generated by the first change from first information indicating the electric power supplied to the electric motor, and estimates the power generated by the electric motor based on the component.

公开(公告)号：US10256760B2

公开(公告)日：2019-04-09

申请号：US15252369

申请日：2016-08-31

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Shingo Fukumaru ,  Shinya Morimoto ,  Hideaki Iura ,  Hirofumi Kinomura

IPC: H02M7/5395 ,  H02P21/13 ,  H02P27/08 ,  H02P21/00 ,  H02M1/00 ,  H02M7/5387

Abstract: A power conversion apparatus includes: a power converter that includes a plurality of switching elements; and a controller that controls the plurality of switching elements. The controller includes: a command generator that generates a voltage command vector; a synthesizer that synthesizes a correction vector with the voltage command vector to generate a synthetic vector; an adjuster that adjusts an output time of a plurality of voltage vectors from the power converter, the output time being corresponding to the synthetic vector; and a correction vector generator that generates the correction vector on the basis of an adjustment result of the adjuster.

公开(公告)号：US10135375B2

公开(公告)日：2018-11-20

申请号：US15461485

申请日：2017-03-17

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Shingo Fukumaru ,  Keita Shimamoto ,  Shinya Morimoto

IPC: H02P6/16 ,  H02P21/22 ,  H02P6/14 ,  H02P27/08 ,  H02M7/5387

Abstract: A rotation controller for an AC electric motor includes a space vector generator, a current change ratio obtainer, and a rotational angle calculator. The space vector generator generates at least a first magnetic field in a first direction and a second magnetic field in a second direction crossing the first direction in a rotation plane of a saliency-exhibiting rotor. The space vector generator synthesizes the first magnetic field and the second magnetic field into a synthesized magnetic field. The current change ratio obtainer acquires a first current change ratio of a first current generated in the first direction in a stator and a second current change ratio of a second current generated in the second direction in the stator. The rotational angle calculator calculates a rotational angle of the saliency-exhibiting rotor based on at least the first and second current change ratios and the first and second directions.

公开(公告)号：US09379649B2

公开(公告)日：2016-06-28

申请号：US14224071

申请日：2014-03-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Yoshiyasu Takase ,  Shinya Morimoto ,  Toru Shikayama ,  Minoru Koga ,  Nobuhiro Umeda

IPC: H02P1/00 ,  H02P6/00 ,  H02P25/06

CPC classification number: H02P6/006 ,  H02P23/22 ,  H02P25/06

Abstract: A linear motor system includes a stator, a mover, and a controller. The stator includes a plurality of armature coil units arranged so as to be spaced apart from one another at certain intervals. The mover includes a permanent magnet. The controller is configured to sequentially select, as a power-feeding target, an armature coil unit opposing the mover from among the plurality of armature coil units, perform, for the power-feeding target, computation for power-feeding control on the basis of a speed command, and sequentially feed power to the armature coil unit. The controller includes a power-feeding-switching compensation function of performing switching compensation when the power-feeding target is switched to a next armature coil unit.

Abstract translation: 线性电动机系统包括定子，动子和控制器。 定子包括多个电枢线圈单元，其以一定间隔彼此间隔布置。 动子包括永久磁铁。 所述控制器被配置为从所述多个电枢线圈单元中顺序选择与所述动子对置的电枢线圈单元作为所述馈电对象，对所述馈电对象进行供电控制的计算，基于 速度指令，并且顺序地向电枢线圈单元供电。 控制器包括在将馈电目标切换到下一个电枢线圈单元时进行开关补偿的供电切换补偿功能。