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1.发明申请公开(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
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。
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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。
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公开(公告)号：US20240396483A1
公开(公告)日：2024-11-28
申请号：US18672013
申请日：2024-05-23
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Yoshiyasu TAKASE , Akira YAMAZAKI , Yasumasa HAMABE , Takahiro SAEKI
Abstract: A power conversion device includes: power conversion circuitry configured to supply drive power to an induction motor; and control circuitry configured to: generate a torque command; correct the torque command, in response to determining that a magnitude of a primary frequency of the induction motor is less than a lower limit level, so that the magnitude of the primary frequency approaches the lower limit level; and control the power conversion circuitry to supply the drive power so that the induction motor generates a torque corresponding to the torque command.
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4.发明申请公开(公告)号：US20170272016A1
公开(公告)日：2017-09-21
申请号：US15461770
申请日：2017-03-17
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Shingo FUKUMARU , Hideaki IURA , Shinya MORIMOTO , Akira YAMAZAKI
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.
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公开(公告)号：US20140292237A1
公开(公告)日：2014-10-02
申请号：US14156460
申请日：2014-01-16
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Akira YAMAZAKI , Hirofumi KINOMURA , Hideaki IURA
Abstract: A motor control apparatus according to an embodiment includes a power conversion unit and a control unit. The power conversion unit supplies power to a motor having salient pole characteristic. The control unit performs proportional-integral control on the deviation between a current reference and a current flowing into the motor to generate a voltage reference, and controls the power conversion unit on the basis of the voltage reference. The control unit estimates the magnetic-pole position of a rotor of the motor on the basis of a high-frequency current flowing into the motor by controlling the power conversion unit, and corrects the estimated magnetic-pole position on the basis of an integrated value of the proportional-integral control.
Abstract translation: 根据实施例的电动机控制装置包括电力转换单元和控制单元。 电力转换单元向具有突极特性的电动机供电。 控制单元对电流基准和流入电动机的电流之间的偏差进行比例积分控制，生成电压基准，并根据电压基准控制功率转换单元。 控制单元通过控制电力转换单元，基于流入电动机的高频电流来估计电动机的转子的磁极位置，并且基于积分值来校正估计的磁极位置 的比例积分控制。
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Patent Agency Ranking
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
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.
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7.发明申请公开(公告)号：US20160094140A1
公开(公告)日：2016-03-31
申请号：US14863452
申请日：2015-09-24
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Akira YAMAZAKI
IPC: H02M5/293
CPC classification number: H02M5/297 , H02M1/12 , H02M5/02 , H02M5/271 , H02M5/4585 , H02M2005/2932
Abstract: A matrix convertor includes a power convertor and a controller. The power convertor includes a plurality of bidirectional switches disposed between a plurality of input phases and a plurality of output phases. The controller is configured to generate a control command and control the power convertor based on the control command. The control command includes a switching pattern that causes a first input phase among the input phases to be connected to one output phase among the output phases and that causes connection of the input phases to be switched between a rest of the output phases. In generating the control command, the controller is configured to set a lower limit to a period of time during which a second input phase among the input phases that corresponds to an intermediate voltage is connected to the rest of the output phases.
Abstract translation: 矩阵转换器包括功率转换器和控制器。 功率转换器包括设置在多个输入相位和多个输出相位之间的多个双向开关。 控制器被配置为基于控制命令生成控制命令并控制功率转换器。 控制命令包括使得输入相位中的第一输入相位连接到输出相位中的一个输出相位的切换模式，并且使输入相位的连接在剩余的输出相位之间切换。 在产生控制命令时，控制器被配置为将下限设置为与中间电压对应的输入相位中的第二输入相位连接到输出相位的其余部分的时间段。
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8.发明申请MOTOR CONTROL DEVICE, AND METHOD AND DEVICE FOR ESTIMATING MAGNETIC FLUX OF ELECTRIC MOTOR 有权电动机控制装置以及用于估计电动机的磁通量的方法和装置公开(公告)号：US20160036364A1
公开(公告)日：2016-02-04
申请号：US14811788
申请日：2015-07-28
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Akira YAMAZAKI , Shingo FUKUMARU
IPC: H02P21/12
CPC classification number: H02P21/12 , H02P21/141
Abstract: A motor control device is provided, which includes a power converter for applying output voltage according to a voltage command to an electric motor, a magnetic flux estimator for estimating a vector of stator magnetic flux of the electric motor based on a difference between the output voltage and a voltage drop caused by a coil resistance of the electric motor, and a phase estimator for estimating a phase of the stator magnetic flux based on the vector of the stator magnetic flux estimated by the magnetic flux estimator. The magnetic flux estimator includes a variable low-pass filter for applying a low-pass filter to the difference at a cut-off frequency according to a frequency of the output voltage, and a phase adjuster for retarding at least one of an output phase of the variable low-pass filter and a phase of the difference before inputted into the variable low-pass filter.
Abstract translation: 提供了一种电动机控制装置，其包括：电力转换器，用于根据电动机的电压指令施加输出电压;磁通量估计器，用于基于输出电压之间的差值估计电动机的定子磁通矢量; 以及由电动机的线圈电阻引起的电压降，以及用于基于由磁通量估计器估计的定子磁通的矢量来估计定子磁通量的相位的相位估计器。 磁通量估计器包括可变低通滤波器，用于根据输出电压的频率将截止频率上的差施加低通滤波器，以及相位调节器，用于延迟至少一个输出相位 可变低通滤波器和输入到可变低通滤波器之前的差的相位。
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9.发明申请公开(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
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。
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公开(公告)号：US20210249971A1
公开(公告)日：2021-08-12
申请号：US17243922
申请日：2021-04-29
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Kentaro INOMATA , Akira YAMAZAKI , Masato HIGUCHI , Hidenori HARA
Abstract: A power conversion device connected in parallel to a second power conversion device including power conversion circuitry that performs power conversion by changing a connection state between first multiple lines on a primary side and second multiple lines on a secondary side, baseline selection circuitry that selects one of the second multiple lines on the secondary side as a baseline and partial modulation control circuitry that controls the power conversion circuitry to maintain a state in which the baseline is connected to one of the first multiple lines on the primary side and to change a connection state between other second multiple lines on the secondary side and the first multiple lines on the primary side, wherein the baseline selection circuitry switches a line selected as the baseline based on a switching timing used by second baseline selection circuitry of the second power conversion device to select a second baseline.
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