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公开(公告)号：US20160226427A1
公开(公告)日：2016-08-04
申请号：US15008578
申请日：2016-01-28
Applicant: FANUC CORPORATION
Inventor： Koujirou Sakai , Shinichi Horikoshi
IPC: H02P27/08
CPC classification number: H02P27/08 , H02M1/32 , H02M5/12 , H02M5/4585 , H02P2201/03
Abstract: A motor drive of an embodiment of the present invention includes a PWM converter for converting AC power inputted from a low voltage AC power source into DC power by PWM control, an inverter for converting the received DC power to AC power to drive a motor, and a capacitor connected between the PWM converter and the inverter. The PWM converter is operated so as to limit input and output currents or input and output power to predetermined values, and supplied from the low voltage AC power source with a lower voltage than a voltage required to drive the motor. The PWM converter boosts a DC link voltage being an output voltage to the voltage able to drive the motor, and thereby serves to increase the potential difference of the capacitor between charged and discharged states to reduce the capacitance of the capacitor.
Abstract translation: 本发明的实施例的电动机驱动器包括：PWM转换器，用于通过PWM控制将从低压交流电源输入的交流电力转换成直流电;逆变器，用于将接收到的直流电力转换为交流电力以驱动电动机;以及 连接在PWM转换器和逆变器之间的电容器。 PWM转换器的工作原理是将输入和输出电流或输入和输出功率限制在预定值，并从低压交流电源提供的电压低于驱动电机所需的电压。 PWM转换器将作为输出电压的DC链路电压提升到能够驱动电动机的电压，从而用于增加电容器在充电和放电状态之间的电位差，以减小电容器的电容。
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公开(公告)号：US11387745B2
公开(公告)日：2022-07-12
申请号：US17114704
申请日：2020-12-08
Applicant: Fanuc Corporation
Inventor： Eijun Murai , Shunpei Tanaka , Shinichi Horikoshi
Abstract: The rectifier includes: a main circuit unit configured to perform power conversion between AC power on a side of a three-phase AC power supply and DC power on a DC side by rectifying operation of a rectifying device and ON-OFF operation of a switching device; a power calculation unit configured to calculate a value of a power flowing between the side of the three-phase AC power supply and the DC side via the main circuit unit; and a control unit configured to perform control to execute the ON-OFF operation of the switching device, wherein the control unit changes a length of an ON period per cycle in the ON-OFF operation executed on the switching device according to the value of the power calculated by the power calculation unit.
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公开(公告)号：US10827638B2
公开(公告)日：2020-11-03
申请号：US16245759
申请日：2019-01-11
Applicant: FANUC CORPORATION
Inventor： Shinichi Horikoshi , Yuuya Nakagawa
Abstract: A motor driving device includes a printed board on which a pattern is printed, and a resin board which is formed by molding a resin and on which no pattern is printed, and the printed board is provided on the resin board.
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Patent Agency Ranking
公开(公告)号：US20190141857A1
公开(公告)日：2019-05-09
申请号：US16180362
申请日：2018-11-05
Applicant: FANUC CORPORATION
Inventor： Kazuhiro Yamamoto , Makoto Takeshita , Shinichi Horikoshi
Abstract: A motor drive device capable of attaching a fan unit to a mounting member more easily. The motor drive device includes the mounting member formed with a mounting hole, the fan unit including a lid positioned facing the mounting member to cover the mounting hole and being fixed to the mounting member, and a restricting member movably attached to the lid, the restricting member being movable between a restriction position for engaging with the mounting member and a non-restriction position for releasing from the mounting member.
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公开(公告)号：US09768723B2
公开(公告)日：2017-09-19
申请号：US15008578
申请日：2016-01-28
Applicant: FANUC CORPORATION
Inventor： Koujirou Sakai , Shinichi Horikoshi
CPC classification number: H02P27/08 , H02M1/32 , H02M5/12 , H02M5/4585 , H02P2201/03
Abstract: A motor drive of an embodiment of the present invention includes a PWM converter for converting AC power inputted from a low voltage AC power source into DC power by PWM control, an inverter for converting the received DC power to AC power to drive a motor, and a capacitor connected between the PWM converter and the inverter. The PWM converter is operated so as to limit input and output currents or input and output power to predetermined values, and supplied from the low voltage AC power source with a lower voltage than a voltage required to drive the motor. The PWM converter boosts a DC link voltage being an output voltage to the voltage able to drive the motor, and thereby serves to increase the potential difference of the capacitor between charged and discharged states to reduce the capacitance of the capacitor.
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16.发明授权公开(公告)号：US10812009B2
公开(公告)日：2020-10-20
申请号：US16372981
申请日：2019-04-02
Applicant: FANUC CORPORATION
Inventor： Takaaki Tagawa , Shinichi Horikoshi
Abstract: A motor driving device includes a heat sink, a rectifier provided on the heat sink and configured to rectify an AC voltage supplied from an AC power supply to a DC voltage, a charging resistor provided on the heat sink and configured to be used for charging a smoothing capacitor for smoothing the DC voltage rectified by the rectifier, and a temperature sensor with which the charging resistor is provided.
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公开(公告)号：US10720872B2
公开(公告)日：2020-07-21
申请号：US16043162
申请日：2018-07-24
Applicant: FANUC CORPORATION
Inventor： Shunpei Tanaka , Shinichi Horikoshi , Yuuta Sekikawa , Kenta Yamamoto
IPC: H02P27/08 , G05B19/406 , H02P5/74 , H02P29/032
Abstract: A motor control device includes a rectifier which converts AC power into DC power and outputs it to a DC link, an inverter which converts the DC power of the DC link into AC power for each motor and outputs it, an AC voltage detection unit which detects an AC voltage value on the AC input side of the rectifier, a state determination unit which determines that a voltage dropped state has been set when the AC voltage value is smaller than a certain specified voltage and that a normal state has been set when the AC voltage value is equal to or larger than the specified voltage, and an output control unit which controls each motor in accordance with the amount of voltage drop with respect to the specified voltage of the AC voltage value when the state determination unit determines that the voltage dropped state has been set.
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公开(公告)号：US08803458B2
公开(公告)日：2014-08-12
申请号：US13746718
申请日：2013-01-22
Applicant: Fanuc Corporation
Inventor： Shinichi Horikoshi , Hiroyasu Sato , Minoru Kobayashi
IPC: H02P6/00
Abstract: A motor drive apparatus includes an inverter which has an upper and lower arms each provided with a plurality of semiconductor switching devices and free-wheeling diodes connected in reverse parallel with respective ones of the plurality of semiconductor switching devices, wherein the semiconductor switching devices are controlled on and off to convert DC to AC, a short-circuiting unit which includes a selector switch between motor phase windings of a synchronous motor, the selector switch being opened and closed under the control of a command, and a dynamic braking control unit which, upon reception of a dynamic braking start command, performs control so as to turn on all of the semiconductor switching devices provided in either one of the upper and lower arms and to turn off all of the semiconductor switching devices provided in the other arm, and thereafter controls the short-circuiting unit so that the selector switch is closed.
Abstract translation: 一种电动机驱动装置，具备：逆变器，具有上臂和下臂，每个上臂和下臂都设置有多个半导体开关装置和与所述多个半导体开关装置中的相应的反向并联连接的续流二极管，其中半导体开关装置被控制 一个短路单元，它包括一个在同步电动机的电动机相绕组之间的选择开关，该选择开关在一个指令的控制下被打开和关闭;一个动态制动控制单元， 在接收到动态制动开始指令时，进行控制，以使得设置在上臂和下臂中的任一个中的所有半导体开关装置接通并关闭设置在另一臂中的所有半导体开关装置，之后 控制短路单元，使选择开关闭合。
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