SYSTEM AND METHOD FOR GROUND FAULT DETECTION OF STATIC STARTER CIRCUITRY

    公开(公告)号:US20230417842A1

    公开(公告)日:2023-12-28

    申请号:US17969634

    申请日:2022-10-19

    IPC分类号: G01R31/52 H02P1/04

    CPC分类号: G01R31/52 H02P1/04

    摘要: A system, in one embodiment, may include a system includes a ground fault detection system. The ground fault detection system includes a linear filter configured to receive one or more signals from a static starter system during operations of the static starter system and to produce a linear filter output. The ground fault detection system further includes a rectifier configured to rectify the linear filter output and to produce a rectifier output, and a gain system configured to multiply the rectifier output by a factor to produce a gain output. The ground fault detection system additionally includes a fault indicator system configured to indicate a ground fault based on the gain output, wherein the ground fault detection system is configured to command an action based on the ground fault.

    Rotary tool
    3.
    发明授权

    公开(公告)号:US11745301B2

    公开(公告)日:2023-09-05

    申请号:US16499319

    申请日:2018-02-23

    摘要: Provided is a rotary tool. In the rotary tool, the rotating tip tool is mounted on a spindle by the fixture, and the spindle and the tip tool are rotated by a motor. The rotary tool has a switch which can switch the motor between a rotation state and a stop state, and a control device which controls the rotation of the motor corresponding to the operation of the switch. When the switch is turned off after a required time T elapses after the motor is started, the control device stops the rotary tool (104d, 106d) by performing a common braking operation on the spindle, and when the switch is turned off before the required time T elapses after the motor is started, the control device stops the tip tool (101d) by inertia without applying a braking force.

    MOTOR DRIVING SYSTEM AND MOTOR OPERATION RECOVERING METHOD

    公开(公告)号:US20180131294A1

    公开(公告)日:2018-05-10

    申请号:US15665843

    申请日:2017-08-01

    IPC分类号: H02P1/04

    摘要: A motor driving system is configured for driving a motor, which is under an inertial rotation status without being driven, to stably rotate from an original speed to a target speed. The motor driving system includes a sensing unit, a control unit and a driving unit. The sensing unit detects a real rotating status of the motor. The control unit is electrically connected with the sensing unit and provides a gradual acceleration command based on the real rotating status. The driving unit is electrically connected with the control unit and drives the motor to accelerate stably to the target speed according to the gradual acceleration command. In addition, a motor operation recovering method cooperated with the motor driving system is also disclosed.

    APPARATUS FOR CONTROLLING OPERATION OF POWER CONVERSTION DEVICE

    公开(公告)号:US20170310208A1

    公开(公告)日:2017-10-26

    申请号:US15355964

    申请日:2016-11-18

    申请人: LSIS CO., LTD.

    摘要: The present invention relates to an apparatus for controlling the operation of a power conversion device including a rectifier part, an initial charging part, a DC-link part and an inverter part. The apparatus includes: a control part configured to drive a relay connected in parallel to an initial charging resistor of the initial charging part if a DC-link voltage of the DC-link part exceeds a first reference voltage during initial charging for the DC-link part; a relay monitoring part configured to monitor whether or not the relay is normally being operated when the relay is driven; and an inverter driving part configured to stop of the driving of the inverter part if it is determined that the relay is not normally being operated by referring to a result of the monitoring of the relay monitoring part.

    DEVICE AND METHOD FOR STARTING A MOTOR FOR ALTERNATING CURRENT
    10.
    发明申请
    DEVICE AND METHOD FOR STARTING A MOTOR FOR ALTERNATING CURRENT 审中-公开
    用于启动用于替换电流的电动机的装置和方法

    公开(公告)号:US20160336882A1

    公开(公告)日:2016-11-17

    申请号:US15151563

    申请日:2016-05-11

    申请人: Roland WEIGEL

    发明人: Roland WEIGEL

    IPC分类号: H02P1/04 H02P1/26

    摘要: A device (1) for starting a motor (4) for alternating current, in particular for a compressor (5), wherein the motor (4) has at least one feed line (3) for the electrical power supply. The device comprises an actuator element (10) for limiting the current in the feed line (3), a switching element (18) for bypassing the actuator element (10), a current-monitoring element (15) for monitoring the current in the feed line (3), and a controller (18) for controlling the switching element (16). The actuator element (10) comprises at least a first start-up element (11) and a second start-up element (12) as well as a switch-over element (14) for switching over between the at least first and second start-up elements (11, 12).

    摘要翻译: 一种用于启动马达(4)用于交流电的装置(1),特别是用于压缩机(5)的装置(1),其中马达(4)具有用于电力供应的至少一个馈送线(3)。 该装置包括用于限制馈送线路(3)中的电流的致动器元件(10),用于旁路致动器元件(10)的开关元件(18),用于监视所述馈电线路中的电流的电流监测元件(15) 馈线(3)和用于控制开关元件(16)的控制器(18)。 致动器元件(10)至少包括第一起动元件(11)和第二起动元件(12)以及用于在所述至少第一和第二起动器之间切换的转换元件(14) -up元素(11,12)。