公开(公告)号：US20140160824A1

公开(公告)日：2014-06-12

申请号：US14101342

申请日：2013-12-10

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Katsutoshi YAMANAKA ,  Hidenori HARA ,  Shinya MORIMOTO ,  Kotaro TAKEDA ,  Takashi TANAKA ,  Takuya NAKA ,  Wataru YOSHINAGA

IPC: H02M5/293

CPC classification number: H02M5/293 ,  H02M5/297

Abstract: A matrix converter according to an embodiment includes a plurality of bidirectional switches and a controller. The bidirectional switches connect each of phases of an alternating current (AC) power supply with each of phases of a rotary electric machine. The controller controls the bidirectional switches to perform power conversion control between the AC power supply and the rotary electric machine. The controller performs on/off control individually on a plurality of unidirectional switching elements constituting the bidirectional switches by using both 120-degree conduction control and PWM control.

Abstract translation: 根据实施例的矩阵转换器包括多个双向开关和控制器。 双向开关将交流（AC）电源的每个相位与旋转电机的每个相位相连接。 控制器控制双向开关，在交流电源和旋转电机之间进行电源转换控制。 控制器通过使用120度导通控制和PWM控制来对构成双向开关的多个单向开关元件分别执行开/关控制。

公开(公告)号：US20150085552A1

公开(公告)日：2015-03-26

申请号：US14495899

申请日：2014-09-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Shinya MORIMOTO

IPC: H02M5/297 ,  H02M5/293

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

Abstract: A matrix converter includes a power converter and a controller. The power converter includes bidirectional switches each having a conducting direction controllable by switching elements. The bidirectional switches are disposed between input terminals coupled to phases of an AC power source and output terminals coupled to phases of a load. A first commutation controller performs commutation control based on a first commutation. A second commutation controller performs the commutation control based on a second commutation. A selector selects between the first and second commutation controllers and to perform the commutation control based on a vector of an output current or an output voltage from the power converter or a vector of an input voltage or an input current from the AC power source to the power converter.

Abstract translation: 矩阵转换器包括功率转换器和控制器。 功率转换器包括各自具有可由开关元件控制的导电方向的双向开关。 双向开关设置在耦合到AC电源的相位的输入端子和耦合到负载的相位的输出端子之间。 第一换向控制器执行基于第一换向的换向控制。 第二换向控制器基于第二换向执行换向控制。 选择器在第一和第二换向控制器之间进行选择，并且基于来自功率转换器的输出电流或输出电压的向量或来自AC电源的输入电压或输入电流的向量来执行换向控制 电源转换器

公开(公告)号：US20140254230A1

公开(公告)日：2014-09-11

申请号：US14203579

申请日：2014-03-11

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Kentaro INOMATA ,  Shinya MORIMOTO ,  Mamoru TAKAKI ,  Yoshiyasu TAKASE

IPC: H02M5/293 ,  H02M5/297

CPC classification number: H02M5/293 ,  H02M5/297

Abstract: Provided is a matrix converter including a power converter, a commutation controller, and a compensator. The power converter includes a plurality of bidirectional switches. The commutation controller performs one of a three-step commutation operation and a four-step commutation operation by the bidirectional switches as a switch source and the bidirectional switches as a switch destination when an input terminal to be connected to an output terminal is switched by on/off control of the bidirectional switches. The compensator compensates for an output voltage error generated when the input terminal to be connected to the output terminal is switched, based on a potential difference before and after the switching of the input terminal to be connected to the output terminal, an output current of the output terminal, and capacitance between input and output terminals of unidirectional switches.

Abstract translation: 提供了一种包括功率转换器，换向控制器和补偿器的矩阵转换器。 功率转换器包括多个双向开关。 换向控制器通过双向开关作为开关源执行三步换向操作和四步换向操作之一，并且当要连接到输出端子的输入端子被切换时，双向开关作为开关目的地 /关闭双向开关控制。 补偿器补偿当要连接到输出端子的输入端子被切换时产生的输出电压误差，基于要连接到输出端子的输入端子切换之前和之后的电位差， 输出端子和单向开关输入和输出端子之间的电容。

公开(公告)号：US20140246940A1

公开(公告)日：2014-09-04

申请号：US14275804

申请日：2014-05-12

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Sohji MURAKAMI ,  Motomichi OHTO ,  Kentaro INOMATA ,  Shinya MORIMOTO ,  Kozo IDE

IPC: H02K1/27 ,  H02P6/18

CPC classification number: H02K1/274 ,  H02K1/278 ,  H02K3/28 ,  H02K29/12 ,  H02P6/18 ,  H02P6/186 ,  H02P2207/05

Abstract: A motor includes a rotor including a rotor core provided with a plurality of permanent magnets in the circumferential direction and a stator including a stator core on which multi-phase stator coils are wound. The rotor has a structure in which the change pattern of magnetic properties of the rotor core or the permanent magnets changes in the circumferential direction, and the stator has a structure in which first and second stator coils of the stator coils are wound on the stator core for each phase in such a manner that passage of current is optionally switched, and when the passage of current is switched to the second stator coil, the distribution pattern of a magnetic field formed on the inner circumferential side by the stator has uniqueness over the whole circumference.

Abstract translation: 电动机包括转子，该转子包括在圆周方向上设置有多个永磁体的转子铁心和定子铁心，多个定子线圈缠绕在该定子铁心上。 转子具有这样的结构，其中转子铁芯或永磁体的磁特性的变化模式在圆周方向上变化，并且定子具有其中定子线圈的第一和第二定子线圈缠绕在定子芯上的结构 对于每个相，可以选择性地切换电流的通过，并且当电流的通过切换到第二定子线圈时，由定子在内周侧形成的磁场的分布模式在整体上是唯一的 圆周。

公开(公告)号：US20220038040A1

公开(公告)日：2022-02-03

申请号：US17386581

申请日：2021-07-28

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Akira YAMAZAKI

IPC: H02P27/08 ,  H02P21/14

Abstract: A power conversion device includes processing circuitry that estimates a magnet magnetic flux of an electric motor based on a d-axis magnetic flux generated in the electric motor, a d-axis inductance of the electric motor, and a d-axis current flowing in the electric motor, estimates a q-axis inductance of the electric motor based on a q-axis magnetic flux generated in the electric motor and a q-axis current flowing in the electric motor, estimates a drive force of the electric motor based on the magnet magnetic flux and the q-axis inductance, and corrects a current command such that the drive force follows a drive force command.

公开(公告)号：US20220034949A1

公开(公告)日：2022-02-03

申请号：US17443998

申请日：2021-07-29

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA ,  Noor Aamir BALOCH ,  Tokuma NAKAMICHI ,  Hengbin RUI

IPC: G01R21/14 ,  G01R21/06 ,  G01K7/22 ,  H02P27/08

Abstract: A power conversion device includes a power conversion circuit including a temperature sensor configured to detect a temperature at a sensor position and a switch configured to switch a connection on and off at a switch position separated from the sensor position; a loss calculation processing circuitry configured to calculate a power loss in the switch; a loss correction processing circuitry configured to correct a calculation result of the power loss on the basis of a detection result of the temperature at the sensor position; a temperature correction processing circuitry configured to correct the detection result of the temperature on the basis of the calculation result of the power loss; and a temperature estimation processing circuitry configured to estimate a temperature at the switch position on the basis of a corrected calculation result of the power loss and a corrected detection result of the temperature.

公开(公告)号：US20150280597A1

公开(公告)日：2015-10-01

申请号：US14667612

申请日：2015-03-24

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Yoshiyasu TAKASE ,  Shinya MORIMOTO ,  Kentaro INOMATA ,  Takashi TANAKA

IPC: H02M5/293 ,  H02M1/12

CPC classification number: H02M5/293 ,  H02M1/12 ,  H02M5/297 ,  H02M2005/2932

Abstract: A power converting apparatus includes a power converter, a controller, and a filter. Further, the controller includes a command generator, an estimator, a voltage error calculator, and an output voltage controller. The command generator is configured to generate an output voltage command. The estimator is configured to estimate the output voltage based on an output current of the power converter. The voltage error calculator is configured to calculate a voltage difference between the output voltage command and the estimated output voltage. The output voltage controller is configured to control the output voltage to suppress a resonance of the filter based on the voltage difference.

Abstract translation: 电力转换装置包括功率转换器，控制器和滤波器。 此外，控制器包括命令发生器，估计器，电压误差计算器和输出电压控制器。 命令发生器被配置为产生输出电压命令。 估计器被配置为基于功率转换器的输出电流来估计输出电压。 电压误差计算器被配置为计算输出电压指令和估计的输出电压之间的电压差。 输出电压控制器被配置为基于电压差来控制输出电压以抑制滤波器的谐振。

公开(公告)号：US20150085551A1

公开(公告)日：2015-03-26

申请号：US14495895

申请日：2014-09-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Kentaro INOMATA

IPC: H02M5/293

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

Abstract: A matrix converter includes a power converter and a controller. The power converter includes bidirectional switches each having a controllable conducting direction. The bidirectional switches are disposed between input terminals and output terminals. The input terminals are respectively coupled to phases of an AC power source. The output terminals are respectively coupled to phases of a load. The controller controls the bidirectional switches. A first commutation controller performs commutation control when the conducting direction is unidirectional. A second commutation controller performs the commutation control when the conducting direction is bidirectional. A selector selects between the first commutation controller and the second commutation controller to perform the commutation control based on a state of an output current from the power converter.

Abstract translation: 矩阵转换器包括功率转换器和控制器。 功率转换器包括各自具有可控导电方向的双向开关。 双向开关设置在输入端子和输出端子之间。 输入端子分别耦合到交流电源的相位。 输出端子分别耦合到负载的相位。 控制器控制双向开关。 当导通方向为单向时，第一换向控制器执行换向控制。 当导通方向为双向时，第二换向控制器执行换向控制。 选择器在第一换向控制器和第二换向控制器之间选择基于来自功率转换器的输出电流的状态执行换向控制。

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：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.