公开(公告)号：US20160094139A1

公开(公告)日：2016-03-31

申请号：US14863451

申请日：2015-09-24

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Akira YAMAZAKI ,  Joji EBISU

IPC: H02M5/293

CPC classification number: H02M5/293 ,  H02M5/297 ,  H02M2005/2932

Abstract: A matrix convertor includes a power convertor, a commutation controller, an error compensator, and a compensation amount adjustor. The power convertor is disposed between input phases and output phases. The power convertor includes a plurality of bidirectional switches each including a plurality of switching elements. The commutation controller is configured to perform commutation control with respect to the plurality of switching elements of each of the plurality of bidirectional switches using a commutation pattern including a plurality of steps so as to switch connection between the input phases and the output phases through the power convertor. The error compensator is configured to calculate a compensation amount to decrease an error in an output voltage caused by the commutation control. The compensation amount adjustor is configured to decrease the compensation amount based on at least one voltage among voltages of the output phases.

Abstract translation: 矩阵转换器包括功率转换器，换向控制器，误差补偿器和补偿量调节器。 功率转换器设置在输入相位和输出相位之间。 功率转换器包括多个双向开关，每个开关包括多个开关元件。 换向控制器被配置为使用包括多个步骤的换向模式来执行关于多个双向开关中的每一个的多个开关元件的换向控制，以便通过该功率来切换输入相位和输出相位之间的连接 转换器 误差补偿器被配置为计算补偿量以减少由换向控制引起的输出电压中的误差。 补偿量调整器被配置为基于输出相的电压中的至少一个电压来减小补偿量。

公开(公告)号：US20140125261A1

公开(公告)日：2014-05-08

申请号：US14044875

申请日：2013-10-03

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Akira YAMAZAKI ,  Hideaki IURA

IPC: H02P21/00

CPC classification number: H02P21/0039 ,  H02P21/0003 ,  H02P21/0085 ,  H02P21/0089 ,  H02P21/24

Abstract: A controller of an AC motor includes a d-axis voltage command section to generate a d-axis voltage command on a d axis of a d-q coordinate system. A d-axis non-interactive control section removes, from the d-axis voltage command, an interference component resulting from a current on a q axis of the system. A first current deviation arithmetic section obtains a deviation between a current command on the q axis and the current on the q axis flowing through the AC motor. A q-axis integral control section outputs an integral value of the deviation. A q-axis voltage command section generates a q-axis voltage command based on the deviation. A constant output control section outputs a correction voltage command based on the integral value. A d-axis voltage command correction section subtracts the correction voltage command from the d-axis voltage command after non-interactive control to correct the d-axis voltage command.

Abstract translation: AC电动机的控制器包括d轴电压指令部，用于在d-q坐标系的d轴上产生d轴电压指令。 d轴非交互式控制部从d轴电压指令中除去由系统的q轴上的电流产生的干扰成分。 第一电流偏差运算部获得q轴上的电流指令与流经交流电动机的q轴上的电流之间的偏差。 q轴积分控制部输出偏差的积分值。 q轴电压指令部基于该偏差生成q轴电压指令。 恒定输出控制部分输出基于积分值的校正电压指令。 d轴电压指令校正部在非交互控制后从d轴电压指令中减去校正电压指令，以校正d轴电压指令。

公开(公告)号：US20240097595A1

公开(公告)日：2024-03-21

申请号：US18460227

申请日：2023-09-01

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Akira YAMAZAKI ,  Takanori IWAKI ,  Joji EBISU ,  Shingo FUKUMARU

IPC: H02P27/08 ,  H02M7/483 ,  H02P25/022

CPC classification number: H02P27/08 ,  H02M7/483 ,  H02P25/022

Abstract: To provide a power conversion device that is effective for improving controllability of power in power conversion for multilevel voltage output. A power conversion device includes a switching circuit configured to supply a current to a motor by connecting and disconnecting a first point having a first potential, a second point having a second potential greater than the first potential, and a neutral point having a neutral potential between the first potential and the second potential to and from the motor, a neutral potential control unit configured to control the switching circuit in a manner to maintain the neutral potential within a target range, and a current control unit configured to increase a supply current to the motor without affecting a driving force generated by the motor at least when controlling the switching circuit 16 by the neutral potential control unit.

公开(公告)号：US20220255481A1

公开(公告)日：2022-08-11

申请号：US17731302

申请日：2022-04-28

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Sadayuki SATO ,  Hideaki IURA ,  Akira YAMAZAKI

IPC: H02P21/14 ,  H02P27/08 ,  H02P21/13 ,  H02P6/185 ,  H02M7/537

Abstract: A power conversion device include: a power conversion circuitry configured to generate a driving voltage for an electric motor; and control circuitry configured to: control the power conversion circuitry to generate the driving voltage corresponding to a voltage command; acquire information indicating an output current that has flown to the electric motor according to the driving voltage; calculate a phase error based on the voltage command, the output current, and an inductance of the electric motor; calculate an updated voltage command based on a frequency command, the output current, and the inductance, wherein the updated voltage command has a command phase; calculate a phase error based on the voltage command, the output current, and the inductance; correct the command phase based on the phase error; and control the power conversion circuitry to generate the driving voltage corresponding to the updated voltage command having the corrected command phase.

公开(公告)号：US20200280258A1

公开(公告)日：2020-09-03

申请号：US16795594

申请日：2020-02-20

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Akira YAMAZAKI ,  Kentaro INOMATA ,  Masato HIGUCHI

IPC: H02M3/335 ,  H02M7/5395

Abstract: A device includes: a first power conversion circuitry configured to convert primary-side power into secondary-side power; and a control circuitry configured to: generate a command value associated with the secondary-side power; calculate a limited command value by modifying the command value so that the command value is equal to or less than a secondary-side limit, wherein the first power conversion circuitry is controlled based on the limited command value; transmit the limited command value to a second power conversion device comprising a second power conversion circuitry connected in parallel to the first power conversion circuitry; receive, from the second power conversion device, information indicating an adjustment value, wherein the adjustment value is added to the limited command value for controlling the second power conversion circuitry; and modify the secondary-side limit based on a difference between a primary-side limit associated with the primary-side power and the adjustment value.

公开(公告)号：US20160373043A1

公开(公告)日：2016-12-22

申请号：US15176281

申请日：2016-06-08

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Akira YAMAZAKI

IPC: H02P21/22 ,  H02P21/20 ,  H02P27/08

CPC classification number: H02P21/22 ,  H02P21/00 ,  H02P21/20 ,  H02P27/08 ,  Y02P80/116

Abstract: A motor controller includes a driver, a current detector, and a command generator. The driver is configured to drive a power converter based on a flux command on which an exploration signal is superimposed. The current detector is configured to detect an output current output from the power converter that has been driven by the driver. The command generator is configured to generate the flux command so as to reduce a current component, among current components included in the output current detected by the current detector, that corresponds to the exploration signal.

Abstract translation: 电机控制器包括驱动器，电流检测器和命令发生器。 驱动器被配置为基于叠加了探测信号的磁通指令来驱动功率转换器。 电流检测器被配置为检测由驱动器驱动的功率转换器的输出电流输出。 命令发生器被配置为产生磁通指令，以便减少与由检测信号相对应的由电流检测器检测到的输出电流中包括的电流分量中的电流分量。

公开(公告)号：US20140049202A1

公开(公告)日：2014-02-20

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: H02P21/14

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。