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公开(公告)号：US20240178646A1
公开(公告)日：2024-05-30
申请号：US18285405
申请日：2021-04-16
申请人： Fanuc Corporation
发明人： Sou Saito , Tsutomu Shikagawa
CPC分类号： H02H1/0007 , H02H7/0822 , H02H7/1222 , H02M7/003 , H02P1/022 , H02P2201/03
摘要： A motor drive device includes: a converter that converts AC power supplied from an AC power source into DC power and outputs the DC power to a DC link; a capacitor installed in the DC link; an inverter that converts the DC power at the DC link into AC power for driving a motor and outputs the AC power; a charging circuit that has a charging resistor for preventing inrush current during the period of pre-charging of the capacitor; a charging control unit that controls the pre-charging of the capacitor executed by the charging circuit; and an abnormality determination unit that determines, during the period of pre-charging of the capacitor, whether an abnormality has occurred, on the basis of a measurement value of the voltage of the capacitor and/or a measurement value of the current flowing through the DC link.
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公开(公告)号：US11894763B2
公开(公告)日：2024-02-06
申请号：US17432695
申请日：2019-07-11
发明人： Jin Kyu Yang
IPC分类号： H02M1/32 , H02H7/122 , H02M7/5395
CPC分类号： H02M1/32 , H02H7/1222 , H02M7/5395
摘要： An inverter protection device is disclosed. An inverter protection device, which determines whether or not a pulse-width modulation (PWM) control signal provided to an inverter unit of an inverter is blocked in accordance with a voltage signal received from first and second switches of a safety relay which are parallelly connected, comprises: a first power switch which is switched to an on-state by means of a first voltage signal applied from the first switch; a second power switch which is switched to an on-state by means of a second voltage signal applied from the second switch; and a buffer unit which is on-off controlled in accordance with an output current of the first and second power switches and provides the PWM control signal to the inverter unit.
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3.发明申请公开(公告)号：US20170310098A1
公开(公告)日：2017-10-26
申请号：US15133899
申请日：2016-04-20
申请人： David R. Pacholok
发明人： David R. Pacholok
CPC分类号： H02H3/20 , H02H7/1222 , H05B6/02 , H05B6/06
摘要： An apparatus and method for greatly increasing power line surge/transient resistance of power semiconductors in inductive heating equipment, in which a sample of the instantaneous line voltage or its rectified equivalent is applied to a comparator input terminal, and a reference voltage corresponding to a predetermined surge shutdown voltage is applied to an opposite comparator input, such that comparator output changes state in response to the predetermined surge shutdown voltage, and is functionally connected to gate drive circuitry to disable gate drive circuitry for the duration of the surge/transient.
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4.发明申请公开(公告)号：US20170170717A1
公开(公告)日：2017-06-15
申请号：US15385685
申请日：2016-12-20
发明人： Lieyi Fang
CPC分类号： H02M3/33507 , H02H3/06 , H02H7/1213 , H02H7/1222 , H02M1/08 , H02M1/32 , H02M3/33523
摘要： System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing signal and the first threshold signal, the power converter being associated with a switching frequency and further including a switch configured to affect the primary current. The off-time component is configured to receive the first comparison signal and generate an off-time signal based on at least information associated with the first comparison signal. The off-time component is further configured to, if the first comparison signal indicates the sensing signal to be larger than the first threshold signal in magnitude, generate the off-time signal to keep the switch to be turned off for at least a predetermined period of time.
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公开(公告)号：US09614431B2
公开(公告)日：2017-04-04
申请号：US14856946
申请日：2015-09-17
发明人： En Hui Wang , Fei Xin , Chi Ping Sun , Ming Li Zhang
CPC分类号： H02M1/32 , H02H7/1222 , H02H9/041 , H02M7/066 , H02M7/2176 , H02P6/14 , H02P6/26
摘要： A control circuit includes: an input terminal for receiving an input AC voltage; a voltage decreasing unit for decreasing the input AC voltage; an A-D converter for converting the decreasing AC voltage to a DC voltage; a driving unit for receiving the DC voltage and to driving a motor, a detecting unit for detecting the DC voltage; and a current shunt unit configured to be conductive to lower the DC voltage at the output terminal of the A-D converter to a voltage which is less than a threshold voltage when the detecting signal indicates that the detected DC voltage exceeds the threshold value. A motor device includes the control circuit and a motor.
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公开(公告)号：US09601986B2
公开(公告)日：2017-03-21
申请号：US14342955
申请日：2012-08-21
申请人： Jens Ehrler
发明人： Jens Ehrler
CPC分类号： H02M1/32 , H02H7/1222 , H02H7/20
摘要： The invention relates to a method and an arrangement for the surge protection of inverters for photovoltaic systems, comprising at least one surge protection device which is physically integrated in the inverter or can be found in the vicinity of the inverter. The at least one surge protection device is connected to the DC side of the inverter. According to the invention, the inverter supplies a signal for setting or tracking the operating point at an operating level in the maximum power point (MPP) range, the response voltage of the surge protection device being predetermined, set, or selected on the basis of said signal.
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公开(公告)号：US20160033559A1
公开(公告)日：2016-02-04
申请号：US14424081
申请日：2014-03-17
发明人： Yuichi KURAMOCHI
IPC分类号： G01R19/165 , G01R31/34
CPC分类号： G01R19/165 , G01R31/34 , G01R31/343 , G01R31/42 , H02H7/1222 , H02M2001/0009 , H02P29/027
摘要： The present invention relates to an overcurrent detecting device and an overcurrent detecting method each of which detects an overcurrent upstream of an inverter circuit in a drive control device for an electric motor. The overcurrent is detected without providing a shunt resistor in the upstream of the inverter circuit, and miniaturization of a circuit substrate is achieved. The overcurrent detecting device calculates a current value of a power supply line from each phase current supplied to the electric motor and a power supply voltage of the inverter circuit, and detects an overcurrent, based on a current value determined from a drop voltage value by an electronic part connected to the power supply line and the current value of the power supply line.
摘要翻译： 本发明涉及一种过电流检测装置和过电流检测方法，它们都检测用于电动机的驱动控制装置中的逆变器电路的过电流。 检测到过电流，而不在逆变器电路的上游设置分流电阻，实现电路基板的小型化。 过电流检测装置从提供给电动机的每个相电流和逆变器电路的电源电压计算电源线的电流值，并根据从下降电压值确定的电流值，检测过电流 电子部分连接到电源线和电源线的当前值。
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8.发明申请公开(公告)号：US20150349530A1
公开(公告)日：2015-12-03
申请号：US14288465
申请日：2014-05-28
IPC分类号： H02J3/04
CPC分类号： H02J3/383 , H02H7/1222 , H02J3/06 , H02J7/35 , Y02E10/563 , Y02E10/566 , Y10T307/544
摘要： In various embodiments, an electrical subpanel system is disclosed. The subpanel system may include a DC/AC inverter configured to accept a DC electrical input and to provide an auxiliary AC current output; a quick-disconnect coupling, a busbar connected between the auxiliary AC current output and the quick-disconnect coupling, a receptacle for connecting to at least one electrical device coupled in parallel to said busbar, where the quick-disconnect coupling may be configured to be selectively connected to a mains branch circuit current.
摘要翻译： 在各种实施例中，公开了一种电子面板系统。 子面板系统可以包括被配置为接受DC电输入并提供辅助AC电流输出的DC / AC逆变器; 快速断开联接器，连接在辅助AC电流输出端和快速断开耦合器之间的母线，用于连接到并联连接到所述母线的至少一个电气设备的插座，其中快速断开耦合可被配置为 选择性地连接到电源分支电路电流。
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公开(公告)号：US20150207449A1
公开(公告)日：2015-07-23
申请号：US14160188
申请日：2014-01-21
发明人： David Allen Clendenen , Yao Da , Ludovic Andre Chretien , Ming Li , Steven P. Richardville , Roger Carlos Becerra , Glen Chester Young
CPC分类号： H02P29/024 , H02H7/1222 , H02H7/1252 , H02P29/0241
摘要： Protection of an electric motor drive controller from a transient voltage is described herein. The transient voltage is provided by an alternating current (AC) power line that includes a line conductor, a neutral conductor, and a ground conductor. The transient voltage protection system includes a first stage protection device coupled to an input of a rectifier of the motor drive controller. The first stage protection device is configured to suppress the transient voltage to prevent damage to the motor drive controller. The transient voltage protection system also includes a second stage protection device coupled between the rectifier and an inverter of the motor drive controller. The second stage protection device is configured to further suppress the transient voltage to prevent damage to the inverter.
摘要翻译： 本文描述了电动机驱动控制器对瞬态电压的保护。 瞬态电压由包括线路导体，中性导体和接地导体的交流（AC）电力线提供。 瞬态电压保护系统包括耦合到电动机驱动控制器的整流器的输入的第一级保护装置。 第一级保护装置被配置为抑制瞬态电压以防止损坏电动机驱动控制器。 瞬态电压保护系统还包括耦合在整流器和电动机驱动控制器的逆变器之间的第二级保护装置。 第二级保护装置被配置为进一步抑制瞬态电压以防止损坏逆变器。
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10.发明申请CIRCUIT FOR TRANSFERRING POWER BETWEEN A DIRECT CURRENT LINE AND AN ALTERNATING-CURRENT LINE 审中-公开用于在直流电流线和交流电流线之间传输功率的电路公开(公告)号：US20140334202A1
公开(公告)日：2014-11-13
申请号：US14341738
申请日：2014-07-25
申请人： D Kevin Cameron
发明人： D Kevin Cameron
CPC分类号： H02H7/1222 , H02J3/00 , H02J5/00 , H02M7/539 , Y10T307/406
摘要： A system, method, and apparatus is disclosed for interfacing and transferring power unidirectionally or bidirectionally between a direct current (DC) line and a single or multiphase alternating-current (AC) line for only half of any given phase and only a single phase at a time when polarity is matched between the DC and the AC system. A circuit with simplified, robust, and reduced-cost components perform the power conditioning and the synchronization as a system that simulates a half-wave rectifier/inverter.
摘要翻译： 公开了一种系统，方法和装置，用于在直流（DC）线路和单相或多相交流（AC）线路之间单向或双向接地和传输功率，仅用于任何给定相位的一半，并且仅在 在DC和AC系统之间极性匹配的时间。 具有简化，稳健和降低成本的组件的电路执行功率调节和同步，作为模拟半波整流器/逆变器的系统。
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