公开(公告)号：US20150200616A1

公开(公告)日：2015-07-16

申请号：US14557452

申请日：2014-12-02

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takahiro SAEKI ,  Hideaki IURA

IPC: H02P21/14

CPC classification number: H02P21/18 ,  H02P1/029 ,  H02P1/26 ,  H02P27/047 ,  H02P29/025

Abstract: A motor controller includes an evaluation value calculator and an evaluation value searcher. The evaluation value calculator calculates an evaluation value represented by a function including a q-axis current value of a torque current component of a current through an induction motor. The evaluation value has a first sign among a positive sign and a negative sign when a rotational speed of the induction motor is greater than a frequency of a voltage applied to the induction motor by a predetermined amount, and has a second sign when the rotational speed is smaller than the frequency by the predetermined amount. The evaluation value searcher performs an evaluation value search to increase or decrease the frequency based on whether the evaluation value has the positive or negative sign so as to make the frequency close to the rotational speed of the induction motor in a free run state.

Abstract translation: 电机控制器包括评估值计算器和评估值搜索器。 评估值计算器计算由包括通过感应电动机的电流的转矩电流分量的q轴电流值的函数表示的评估值。 当感应电动机的转速大于施加到感应电动机的电压的频率预定量时，评估值具有正号和负号之间的第一符号，并且当转速 小于预定量的频率。 评估值搜索器基于评估值是否具有正或负符号来执行评估值搜索以增加或减少频率，以使频率接近感应电动机的转速处于自由运行状态。

公开(公告)号：US20140346984A1

公开(公告)日：2014-11-27

申请号：US14455944

申请日：2014-08-11

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takayuki SHIOTA ,  Shinya MORIMOTO ,  Hideaki IURA

IPC: H02P6/18 ,  H02P21/14

CPC classification number: H02P6/183 ,  H02P21/18 ,  H02P21/24

Abstract: A controlling apparatus for an electric motor according to an embodiment includes a superposed component generator, an inverter, a current detector, and a magnetic pole position estimator. The superposed component generator generates, at a predetermined cycle, a superposed voltage reference of which vector is shifted by 90 degrees with respect to that of a superposed voltage reference previously generated, in a coordinate system that is set to a stator of the electric motor. The inverter outputs a driving voltage that is based on a driving voltage reference superposed with the superposed voltage reference to the electric motor. The current detector detects currents flowing into respective phases of the electric motor, and outputs the detected currents. The magnetic pole position estimator detects the magnetic pole position of the electric motor based on an amount of change in the detected currents at the predetermined cycle.

Abstract translation: 根据实施例的用于电动机的控制装置包括叠加分量发生器，逆变器，电流检测器和磁极位置估计器。 叠加分量发生器以预定的周期在相对于先前产生的叠加的电压基准的矢量偏移90度的叠加电压基准上，在设定到电动机的定子的坐标系中产生。 逆变器输出基于与叠加的基准叠加的驱动电压基准的驱动电压到电动机。 电流检测器检测流入电动机的各相的电流，并输出检测到的电流。 磁极位置估计器基于在预定周期的检测电流的变化量来检测电动机的磁极位置。

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。

公开(公告)号：US20130279214A1

公开(公告)日：2013-10-24

申请号：US13859732

申请日：2013-04-10

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Yoshiyasu TAKASE ,  Kozo IDE ,  Shinya MORIMOTO ,  Hideaki IURA ,  Takahiro SAEKI

IPC: H02M7/68 ,  H02M5/44

CPC classification number: H02M7/68 ,  H02M1/16 ,  H02M5/44 ,  H02M5/4585 ,  H02M7/219 ,  H02M7/797 ,  H02P9/04 ,  H02P21/50

Abstract: A power regenerative converter includes: a power conversion unit configured to convert AC power supplied from an AC power supply into DC power and convert DC power into AC power to be supplied as regenerative electric power to the AC power supply supply; an LCL filter including a reactor unit having a plurality of reactors connected in series between the power conversion unit and the AC power supply, and capacitors each having one end connected to a series connection point of the reactors in the reactor unit; a drive control unit for controlling the power conversion unit based on an AC voltage command; and a voltage command compensation unit for calculating a compensation value in accordance with a capacitor voltage being a voltage at the series connection point of the reactors and adding the compensation value to the AC voltage command input to the drive control unit.

Abstract translation: 一种电力再生转换器，包括：电力转换单元，被配置为将从AC电源提供的AC电力转换为DC电力，并将DC电力转换为作为再生电力供给到AC电源的AC电力; LCL滤波器，包括具有串联连接在功率转换单元和AC电源之间的多个电抗器的电抗器单元，以及各自具有连接到电抗器单元中的电抗器的串联连接点的电容器; 驱动控制单元，用于基于AC电压命令来控制所述电力转换单元; 以及电压指令补偿单元，用于根据电抗器的串联连接点处的电压的电容器电压来计算补偿值，并将补偿值与输入到驱动控制单元的AC电压指令相加。

公开(公告)号：US20130279213A1

公开(公告)日：2013-10-24

申请号：US13858949

申请日：2013-04-09

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takahiro SAEKI ,  Hideaki IURA ,  Shoji KONAKAHARA

IPC: H02M7/68 ,  H02M5/04

CPC classification number: H02M7/68 ,  H02M5/04 ,  H02M5/4585 ,  H02M7/797 ,  H02P21/36

Abstract: A power regeneration apparatus includes a power conversion unit, an AC reactor, a voltage detecting unit, a phase detecting unit, a drive control unit for controlling the power conversion unit based on a phase detection value, and a reactive current component detecting unit. The phase detecting unit detects the phase of the AC power supply. The reactive current component detecting unit detects a reactive current component of a current. The drive control unit includes a phase correction section. The phase correction section corrects the phase detection value based on the reactive current component.

Abstract translation: 电力再生装置包括功率转换单元，交流电抗器，电压检测单元，相位检测单元，用于基于相位检测值控制功率转换单元的驱动控制单元和无功电流分量检测单元。 相位检测单元检测交流电源的相位。 无功电流分量检测单元检测电流的无功电流分量。 驱动控制单元包括相位校正部。 相位校正部根据无功电流分量来校正相位检测值。