公开(公告)号：US20150130432A1

公开(公告)日：2015-05-14

申请号：US14541046

申请日：2014-11-13

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Akira YAMAZAKI ,  Joji EBISU

IPC: H02M5/293 ,  H02M1/088

CPC classification number: H02M5/293 ,  H02M1/088 ,  H02M5/297 ,  H02M2001/0003 ,  H02M2001/0025 ,  H02M2001/385 ,  H02M2005/2932

Abstract: A matrix converter includes a power converter, a control information generator, a commutation controller, a storage, and an error compensator. The power converter includes bidirectional switches each having a conducting direction controllable by switching elements. 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 control information generator generates control information to control the bidirectional switches. The commutation controller controls each of the switching elements based on the control information so as to perform commutation control. The storage stores setting information of at least one of a method of the commutation control and a modulation method of power conversion. The error compensator compensates for an output voltage error based on the setting information.

Abstract translation: 矩阵转换器包括功率转换器，控制信息发生器，换向控制器，存储器和误差补偿器。 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。 控制信息发生器产生控制信息以控制双向开关。 换向控制器基于控制信息控制每个开关元件，以执行换向控制。 存储器存储换流控制的方法和功率转换的调制方法中的至少一个的设置信息。 误差补偿器根据设定信息补偿输出电压误差。

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：US20150130431A1

公开(公告)日：2015-05-14

申请号：US14541040

申请日：2014-11-13

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Akira YAMAZAKI ,  Joji EBISU

IPC: H02M5/293 ,  H02M1/088

CPC classification number: H02M5/293 ,  H02M1/088 ,  H02M5/297 ,  H02M2001/0003 ,  H02M2001/0025 ,  H02M2001/385 ,  H02M2005/2932

Abstract: A matrix converter includes a power converter, a command generator, and a commutation 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. The command generator generates a control command based on a voltage command specifying a pulse width of pulse width modulation control. The commutation controller controls the switching elements by a commutation method based on the control command so as to perform commutation control. The command generator includes a corrector to, when an error in an output voltage is caused by the commutation control, correct the pulse width specified in the voltage command in generating the control command to reduce the error in the output voltage.

Abstract translation: 矩阵转换器包括功率转换器，命令发生器和换向控制器。 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。 命令发生器基于指定脉冲宽度调制控制的脉冲宽度的电压指令生成控制命令。 换向控制器通过基于控制命令的换向方法来控制开关元件，以进行换向控制。 命令发生器包括校正器，当由换向控制引起输出电压的误差时，校正在电压指令中指定的脉冲宽度以产生控制命令以减小输出电压的误差。

公开(公告)号：US20150115906A1

公开(公告)日：2015-04-30

申请号：US14514390

申请日：2014-10-15

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Joji EBISU ,  Akira YAMAZAKI

IPC: H02M5/293

CPC classification number: H02M5/293 ,  H02M1/00 ,  H02M2001/0054 ,  H02M2005/2932 ,  Y02B70/1491

Abstract: A matrix converter includes: a power converter configured to couple an AC power supply and a load together; and a controller configured to selectively execute: a first control mode in which the controller is configured to perform power conversion between the AC power supply and the load; and a second control mode in which the controller is configured to directly combine the AC power supply with the load. The controller is configured to: increase the output voltage and cause a phase of the output voltage follow up a voltage phase of the AC power supply in a case where a difference between a frequency of an output voltage from the power converter to the load and a frequency of the AC power supply becomes within a predetermined range.

Abstract translation: 矩阵转换器包括：功率转换器，被配置为将AC电源和负载耦合在一起; 以及控制器，被配置为选择性地执行：所述控制器被配置为在所述AC电源和所述负载之间执行电力转换的第一控制模式; 以及第二控制模式，其中所述控制器被配置为将所述AC电源与所述负载直接组合。 控制器被配置为：在从功率转换器到负载的输出电压的频率与负载之间的差异的情况下，增加输出电压并使得输出电压的相位跟随交流电源的电压相位 AC电源的频率变为规定范围。

公开(公告)号：US20230376330A1

公开(公告)日：2023-11-23

申请号：US18247829

申请日：2020-10-09

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Takeshi UEDA ,  Joji EBISU

IPC: G06F9/451 ,  G06F3/04847 ,  G06F3/0482 ,  G05B19/042

CPC classification number: G06F9/453 ,  G06F3/04847 ,  G06F3/0482 ,  G05B19/0426

Abstract: This power conversion device comprises: a power conversion circuit for converting primary side power to secondary side power; a program storage unit for storing a plurality of program modules and sequence data; an extension program acquiring unit for acquiring an extension program and storing the extension program into an extension program storage unit; and a control unit for sequentially calling and executing two or more modules to be executed from the plurality of program modules on the basis of the sequence data and controlling the power conversion circuit on the basis of an execution result. The plurality of program modules includes an extension module. When the called module to be executed is the extension module, the control unit executes the extension program by including the extension program in the extension program storage unit in the extension module.

公开(公告)号：US20150102797A1

公开(公告)日：2015-04-16

申请号：US14513216

申请日：2014-10-14

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Hirofumi KINOMURA ,  Joji EBISU ,  Koji IWAHASHI

IPC: H02M5/293

CPC classification number: H02M5/293 ,  H02M5/297

Abstract: A matrix converter includes: a power convertor that includes a plurality of bidirectional switches configured to control a conducting direction using a plurality of switching elements; a command generator configured to generate a control command for a PWM control on the plurality of switching elements; and a commutation controller configured to perform a commutation control on the plurality of bidirectional switches in a case where the control command changes. In a case where the control command changes during execution of the commutation control, the commutation controller executes a handover step for handover to a next commutation control and then executes the next commutation control from a step in a course of the next commutation control.

Abstract translation: 矩阵转换器包括：功率转换器，其包括被配置为使用多个开关元件来控制导通方向的多个双向开关; 命令发生器，被配置为产生用于所述多个开关元件的PWM控制的控制命令; 以及换向控制器，被配置为在所述控制命令改变的情况下对所述多个双向开关执行换向控制。 在执行换向控制期间控制命令改变的情况下，换向控制器执行切换步骤，以切换到下一个换向控制，然后在下一个换向控制的过程中从一个步骤执行下一个换向控制。

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：US20150085553A1

公开(公告)日：2015-03-26

申请号：US14497232

申请日：2014-09-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Hirofumi KINOMURA ,  Joji EBISU

IPC: H02M5/293

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

Abstract: A matrix converter includes: a power convertor that includes a plurality of bidirectional switches; and a controller configured to control the plurality of bidirectional switches. The controller includes: a first commutation controller configured to perform a commutation control with a first commutation method; a second commutation controller configured to perform a commutation control with a second commutation method different from the first commutation method; and a selector configured to select a commutation controller that is configured to execute a commutation control from the first commutation controller and the second commutation controller based on any one of a phase of an output electric current from the power convertor and a phase of an input voltage to the power convertor.

Abstract translation: 矩阵转换器包括：功率转换器，包括多个双向开关; 以及控制器，被配置为控制所述多个双向开关。 控制器包括：第一换向控制器，被配置为利用第一换向方法执行换向控制; 第二换向控制器，被配置为以与所述第一换向方法不同的第二换向方式执行换向控制; 以及选择器，其被配置为基于来自所述功率转换器的输出电流的相位和输入电压的相位中的任何一个来选择被配置为从所述第一换向控制器和所述第二换向控制器执行换向控制的换向控制器 到电力转换器。