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1.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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公开(公告)号：US20210367546A1
公开(公告)日：2021-11-25
申请号：US17324106
申请日：2021-05-19
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Sadayuki SATO , Hideaki IURA , Mitsuhiro KOGA
IPC: H02P27/08 , H02P25/026 , H02P21/06 , H02P21/18 , H02P21/14
Abstract: A power conversion apparatus includes circuitry to: generate a first command to provide a first electrical output to a motor; receive a first electrical response to the first electrical output; estimate a position of a magnetic pole of the motor based on the first electrical response; set a pulse provide condition in accordance with the estimated position of the magnetic pole; generate a second command to provide a positive electrical pulse output and a negative electrical pulse output to the motor in accordance with the pulse provide condition; receive a positive electrical response to the positive electrical pulse output and a negative electrical response to the negative electrical pulse output; calculate a magnitude difference between the positive electrical response and the negative electrical response; change the pulse provide condition to generate a modified second command when the magnitude difference is smaller than a predetermined difference level; and estimate a polarity of the magnetic pole based on the magnitude difference corresponding to the modified second command when the magnitude difference is larger than the predetermined difference level.
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公开(公告)号：US20150115864A1
公开(公告)日：2015-04-30
申请号：US14520393
申请日：2014-10-22
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Shuji MATSUDA , Hideaki IURA
Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. When a current through the motor exceeds a first threshold in the voltage increase mode, a mode changer changes the mode to the frequency decrease mode. When the current through the motor becomes smaller than a second threshold in the frequency decrease mode, the mode changer changes the mode to the voltage increase mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. A determinator determines whether the voltage and the frequency satisfy the relationship.
Abstract translation: 电动机控制装置包括电压调节器，用于执行电压增加模式，以从第一范围的下限随时间增加施加到感应电动机的电压。 频率调节器执行频率降低模式，以随着时间从第二范围的上限降低电压的频率。 当通过电动机的电流在电压增加模式下超过第一阈值时，模式转换器将模式改变为频率降低模式。 当在频率降低模式下通过电动机的电流变得小于第二阈值时，模式改变器将模式改变为电压增加模式，以控制电动机从自由运行状态转变为电压和频率的状态 满足关系 确定器确定电压和频率是否满足关系。
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公开(公告)号：US20220278626A1
公开(公告)日：2022-09-01
申请号：US17679084
申请日：2022-02-24
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Keisei INOKI , Takahiro SAEKI , Toshihiro HANADA , Kengo NAKAHARA , Hideaki IURA
Abstract: The power conversion device may include: power conversion circuitry configured to perform a power conversion for outputting a driving power to an induction motor; and control circuitry. The control circuitry may be configured to: receive a master command phase from a master power conversion device; generate a voltage command having a command phase in a rotating coordinate system based on a torque target value, wherein a rotating magnetic field for driving a rotor of the induction motor is generated to rotate with the rotating coordinate system; calculate a rotation phase of the rotating coordinate system based on a command phase difference between the master command phase and the command phase to reduce the command phase difference; and control the power conversion circuitry to output the driving power to the induction motor, in synchronization with the master power conversion device, based on the rotation phase and the voltage command.
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Patent Agency Ranking
公开(公告)号：US20150115865A1
公开(公告)日：2015-04-30
申请号：US14521619
申请日：2014-10-23
Applicant: KABUSHIKI KAISHA YASKAWA DENKI
Inventor： Shuji MATSUDA , Hideaki IURA
Abstract: A motor control apparatus includes a voltage regulator to execute a voltage increase mode to increase a voltage applied to an induction motor from a lower limit of a first range over time. A frequency regulator executes a frequency decrease mode to decrease a frequency of the voltage from an upper limit of a second range over time. The frequency regulator limits decrease of the frequency when a bus voltage of a bus exceeds a first threshold in the frequency decrease mode. The bus supplies DC power to an inverter to drive the motor. A mode changer alternatively changes the voltage increase mode and the frequency decrease mode to control the motor to change from a free running state to a state in which the voltage and the frequency satisfy a relationship. The determinator determines whether the voltage and the frequency satisfy the relationship.
Abstract translation: 电动机控制装置包括电压调节器，用于执行电压增加模式，以从第一范围的下限随时间增加施加到感应电动机的电压。 频率调节器执行频率降低模式，以随着时间从第二范围的上限降低电压的频率。 在频率降低模式下，当总线总线电压超过第一阈值时，频率调节器限制频率的降低。 总线为逆变器提供直流电，以驱动电机。 变换器交替地改变升压模式和频率降低模式，以控制电动机从自由运行状态转变为电压和频率满足关系的状态。 确定器确定电压和频率是否满足关系。
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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。
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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
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.
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公开(公告)号：US20170063253A1
公开(公告)日：2017-03-02
申请号：US15252369
申请日：2016-08-31
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Shingo FUKUMARU , Shinya MORIMOTO , Hideaki IURA , Hirofumi KlNOMURA
IPC: H02M7/5387 , H02P21/13
CPC classification number: H02P21/13 , H02M7/5395 , H02M2001/0009 , H02M2001/0025 , H02M2007/53876 , H02P21/50 , H02P27/08
Abstract: A power conversion apparatus includes: a power converter that includes a plurality of switching elements; and a controller that controls the plurality of switching elements. The controller includes: a command generator that generates a voltage command vector; a synthesizer that synthesizes a correction vector with the voltage command vector to generate a synthetic vector; an adjuster that adjusts an output time of a plurality of voltage vectors from the power converter, the output time being corresponding to the synthetic vector; and a correction vector generator that generates the correction vector on the basis of an adjustment result of the adjuster.
Abstract translation: 一种电力转换装置，包括：功率转换器，包括多个开关元件; 以及控制多个开关元件的控制器。 控制器包括：产生电压指令矢量的指令发生器; 合成器，其将校正矢量与电压指令矢量合成以产生合成矢量; 调节器，其调整来自所述功率转换器的多个电压矢量的输出时间，所述输出时间对应于所述合成矢量; 以及校正矢量生成器，其基于调节器的调整结果生成校正矢量。
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10.发明申请POWER CONVERSION APPARATUS, PHASE CURRENT DETECTION APPARATUS, AND PHASE CURRENT DETECTION METHOD 有权功率转换装置，相电流检测装置和相电流检测方法公开(公告)号：US20170063252A1
公开(公告)日：2017-03-02
申请号：US15252410
申请日：2016-08-31
Applicant: Kabushiki Kaisha Yaskawa Denki
Inventor： Shingo FUKUMARU , Shinya MORIMOTO , Hideaki IURA , Hirofumi KINOMURA
IPC: H02M7/5387 , H02M1/08
CPC classification number: H02M7/5387 , H02M2001/0009 , H02M2007/53876
Abstract: A power conversion apparatus includes: a power converter that includes a plurality of switching elements; a switch controller that controls the plurality of switching elements so that the order of outputting a plurality of kinds of voltage vectors from the power converter is opposite in a first half and a latter half of a carrier period; a DC-side current detector that detects a DC-side current of the power converter; and a phase current detector that detects one phase current among three phase currents on the basis of the detected DC-side current at a detection timing, the detection timing being selected from a first-half timing and a latter-half timing of the carrier period at which the same kind of voltage vector is output. The phase current detector includes a timing switcher that alternately switches the detection timing between the first-half timing and the latter-half timing.
Abstract translation: 一种电力转换装置，包括：功率转换器，包括多个开关元件; 开关控制器，其控制所述多个开关元件，使得从所述功率转换器输出多种电压矢量的顺序在载波周期的前半部和后半部相反; 检测功率转换器的直流侧电流的直流侧电流检测器; 以及相电流检测器，其基于检测定时的检测到的DC侧电流来检测三相电流之中的一相电流，所述检测定时选自载波周期的前半定时和后期定时 输出相同种类的电压矢量。 相电流检测器包括定时切换器，其交替地切换上半部定时与后半时间之间的检测定时。
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