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公开(公告)号：US12126288B2
公开(公告)日：2024-10-22
申请号：US17800948
申请日：2021-02-22
申请人： FANUC CORPORATION
发明人： Koujirou Sakai
CPC分类号： H02P27/06 , H02K11/33 , H02K2213/03
摘要： Provided are a selection device and a selection method in which it is easy for an operator to select a motor and an amplifier while taking an auxiliary function and a compliance standard into consideration. Provided is a selection device which selects a motor and an amplifier and which comprises: a storage unit that stores the performance of each motor among a plurality of motors and, for each of the plurality of motors and a plurality of amplifiers stores function and standards information indicating a corresponding auxiliary function and compliance standard, as well as an amplifier corresponding to the performance of the motor; an input unit into which an operator inputs selection information; a motor selection unit that selects a motor fulfilling a condition; an amplifier selection unit that selects an amplifier that can drive the motor fulfilling the condition; a function and standards information acquisition unit that acquires the function and standards information corresponding to the selected motor and the selected amplifier; and a display unit that displays the selected motor, the selected amplifier, and the acquired function and standards information.
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公开(公告)号：US11283367B2
公开(公告)日：2022-03-22
申请号：US16932875
申请日：2020-07-20
申请人： FANUC CORPORATION
发明人： Koujirou Sakai
摘要： A power conversion apparatus includes: a converter including switching elements and configured to convert an AC voltage supplied from an AC power supply through a switch unit into a DC voltage; a filter provided between the switch unit and the converter and including reactors and capacitors, the filter being configured to remove noise; and a control unit configured to discharge electric charge stored in the capacitors by setting the switching elements into an ON state after opening the switch unit.
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3.发明授权Motor drive device having function of varying DC link low-voltage alarm detection level 有权电机驱动装置具有直流链路低压报警检测电平变化的功能公开(公告)号：US08736215B2
公开(公告)日：2014-05-27
申请号：US13803805
申请日：2013-03-14
申请人： FANUC Corporation
发明人： Masakazu Niwa , Koujirou Sakai
CPC分类号： H02P31/00 , H02H3/04 , H02H3/253 , H02H7/1222 , H02H7/16 , H02P29/025 , H02P29/026
摘要： A motor drive device (1) of the present invention includes a converter unit (10) and an inverter unit (30). The converter unit (10) includes: power supply voltage monitoring unit (3) for detecting a power failure; DC link voltage detecting means (4); capacitor total capacity calculating means (6) which calculates total capacity of DC link smoothing capacitors (17, 18) and calculates a DC link low-voltage alarm detection level for an instantaneous power failure; DC link low-voltage alarm detection level setting means (8) which varies the DC link low-voltage alarm detection level for an instantaneous power failure as necessary; and alarm generating means (7) which monitors the DC link voltage and generates an alarm to protect the converter unit. In the case where a power failure is detected, the DC link low-voltage alarm detection level is increased in accordance with the total capacity of the DC link smoothing capacitors (17, 18).
摘要翻译： 本发明的电动机驱动装置（1）包括转换器单元（10）和逆变器单元（30）。 转换器单元（10）包括：电源电压监视单元（3），用于检测电源故障; 直流链路电压检测装置（4）; 电容器总容量计算装置（6），其计算直流链路平滑电容器（17,18）的总容量，并计算用于瞬时停电的DC链路低压报警检测电平; 直流链路低压报警检测电平设定装置（8），根据需要改变直流链路低电压报警检测电平，以实现瞬时停电; 以及报警发生装置（7），其监视直流链路电压并产生警报以保护转换器单元。 在检测到电源故障的情况下，根据直流链路平滑电容器（17,18）的总容量来增大直流链路低电压警报检测电平。
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公开(公告)号：US20230143105A1
公开(公告)日：2023-05-11
申请号：US17918611
申请日：2021-06-29
申请人： FANUC CORPORATION
发明人： Youichirou Ooi , Koujirou Sakai
CPC分类号： G01R31/12 , G01R31/34 , H02P23/14 , H02P27/08 , H02P2201/03
摘要： A motor drive device 1 is provided with: a converter unit 11 which converts input alternating-current power into direct-current power and outputs the same to a DC link; a DC link capacitor 4; voltage dividing resistors 13-1, 13-2 which are connected in series with one another and which are provided between a positive potential line and a negative potential line of the DC link; a measurement resistor 14 connected between the connecting point of the voltage dividing resistors 13-1 and 13-2 and the positive potential line or the negative potential line of the DC link; a resistance voltage measuring unit 15 for measuring the resistance voltage across the measurement resistor 14; a direct current component extracting unit 16 for extracting the direct current component of the resistance voltage; an alternating current component extracting unit 17 for extracting the alternating current component of the resistance voltage; a DC link potential measuring unit 18 for measuring the positive potential and the negative potential of the DC link; and an insulation resistance value calculating unit 19 for calculating the insulation resistance value of a motor 3 on the basis of the direct current component and the alternating current component of the resistance voltage, and the positive potential and the negative potential of the DC link.
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公开(公告)号：US09960721B2
公开(公告)日：2018-05-01
申请号：US14244140
申请日：2014-04-03
申请人： FANUC CORPORATION
发明人： Koujirou Sakai
IPC分类号： G01R31/02 , H02H3/04 , H02P23/00 , H02P27/08 , H02P29/032
CPC分类号： H02P23/00 , H02P27/085 , H02P29/032
摘要： A power failure detection unit in an AC-DC converter device detects power failure of a 3-phase AC power supply at the time of driving a motor, and generates a power failure detection signal in accordance with detection of power failure. A transmitter unit in the AC-DC converter device transmits the power failure detection signal using a cable, radio, or an optical fiber. A receiver unit in a DC-AC converter device receives the power failure detection signal transmitted from the transmitter unit.
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公开(公告)号：US09054620B2
公开(公告)日：2015-06-09
申请号：US13943419
申请日：2013-07-16
申请人： FANUC CORPORATION
发明人： Masakazu Niwa , Koujirou Sakai
CPC分类号： H02P27/00 , H02J1/108 , H02J9/061 , H02P27/06 , H02P29/032 , H02P2201/09
摘要： A motor driving device includes a rectifier, an inverter connected to a DC link on a DC side of the rectifier, a power failure detecting unit for detecting a power failure on the alternating side of the rectifier, an electric storage device connected to the DC link, a charging unit that possesses a voltage boosting function of charging the electric storage device by direct current power at the DC link, a discharging unit that causes direct current power stored in the electric storage device to be discharged to the DC link, and a control unit that causes the charging unit to operate when the power failure detecting unit does not detect a power failure, or before start of motor drive, and causes the discharging unit and the inverter to operate when the power failure detecting unit detects a power failure.
摘要翻译： 一种电动机驱动装置，包括整流器，连接到整流器的直流侧的直流母线的逆变器，用于检测整流器的交流侧的电力故障的电力故障检测单元，连接到直流母线的蓄电装置 具有通过所述直流母线的直流电而对所述蓄电装置进行充电的升压功能的充电单元，将存储在所述蓄电装置中的直流电力放电到所述直流母线的放电单元，以及控制 当电源故障检测单元没有检测到电源故障或者在电动机驱动开始之前使得充电单元工作的单元，并且当电源故障检测单元检测到电源故障时，使得放电单元和逆变器工作。
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公开(公告)号：US11353846B2
公开(公告)日：2022-06-07
申请号：US16934010
申请日：2020-07-21
申请人： FANUC CORPORATION
发明人： Hironao Tanouchi , Koujirou Sakai
IPC分类号： G05B19/414
摘要： A servo amplifier selection device includes a memory configured to store specifications of each of a plurality of amplifiers capable of supplying power to a motor; and a processor configured to select, based on the number of one or more designated motors, specifications of each of the one or more designated motors, and specifications of each of the plurality of amplifiers, a combination of amplifiers connected to the one or more designated motors from the plurality of amplifiers in such a way that each of the one or more designated motors is connected to any of the plurality of amplifiers; and select, for each amplifier included in the combination of the amplifiers, specifications of a power cable that connects between the amplifier and a power source in such a way as to satisfy a supply of power needed for the motor connected to the amplifier.
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公开(公告)号：US11340580B2
公开(公告)日：2022-05-24
申请号：US16393238
申请日：2019-04-24
申请人： FANUC CORPORATION
发明人： Koujirou Sakai
IPC分类号： G05B19/4065
摘要： A machine state monitoring device is a machine state monitoring device that is intended for a motor drive device of a machine tool. The motor drive device includes: a motor; a converter and an inverter that adjust a power supply voltage; a power failure detection unit that acquires an input voltage of the motor drive device so as to detect a power failure in the motor drive device; and a communication unit that transmits, based on the result of the detection of the detection unit, a time when the power failure is started, and a time when the power failure is completed. The machine state monitoring device includes: a communication unit that receives information of the time when the power failure is started and the time when the power failure is completed from the communication unit of the motor drive device; and a storage unit that stores the information.
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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
申请人： FANUC CORPORATION
发明人： Koujirou Sakai , Shinichi Horikoshi
CPC分类号： H02P27/08 , H02M1/32 , H02M5/12 , H02M5/4585 , H02P2201/03
摘要： 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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公开(公告)号：US20240162704A1
公开(公告)日：2024-05-16
申请号：US18283891
申请日：2021-04-02
申请人： Fanuc Corporation
IPC分类号： H02H9/00 , H02H9/02 , H02M1/00 , H02M7/5387
CPC分类号： H02H9/002 , H02H9/02 , H02M1/0077 , H02M7/53871
摘要： This inrush current suppression circuit, which suppresses inrush current during pre-charging of a capacitor connected in parallel to the DC-output side of a converter that converts AC power supply voltage to DC voltage, includes: a resistor that is provided between the DC-output side of the converter and the capacitor, or that is provided on the AC-input side of the converter; a switch that is selectively switched between an open state, in which an electric circuit is formed with the resistor interposed, and a closed state, in which a short circuit is formed without the resistor interposed; an AC power supply voltage detection unit that detects whether the AC power supply voltage is inputted to the converter; and a switch control unit that switches the switch from the open state to the closed state after a prescribed time has elapsed from when the AC power supply voltage detection unit detects inputting of the AC power supply voltage to the converter.
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