METHOD AND APPARATUS FOR CONTROLLING A POWER SUPPLY TO AN ELECTRICAL MOTOR

    公开(公告)号:WO2020169765A1

    公开(公告)日:2020-08-27

    申请号:PCT/EP2020/054538

    申请日:2020-02-20

    Abstract: A motor control apparatus for controlling a power supply to an electrical motor (M) connected to an output terminal (3) of the motor control apparatus (1) comprising: an overcurrent protection circuit (1A) having a power switch (5) through which the electrical motor (M) receives an electrical load current (I L ) and having a sensor component (4) connected in series with the power switch (5) and adapted to generate directly a voltage drop (ΔU 4 ) corresponding to the current rise speed of the electrical load current (I L ) flowing from an input terminal (2) of the motor control apparatus (1) via the sensor component (4) and the power switch (5) to the output terminal (3) and having a driver circuit (6) adapted to detect an occurring overcurrent depending on the voltage drop (ΔU 4 ) generated by the sensor component (4) and/or depending on a voltage drop (ΔU 5 ) along the power switch (5) and adapted to switch off said power switch (5) upon detection of an overcurrent within a switch-off period of less than one millisecond; and/or comprising a power supply control circuit (1C) having a sensor component (9) adapted to measure at the input terminal (2) a supply voltage notified to a control unit (8) of the motor control apparatus (1) adapted to control an electrical power supplied to the electrical motor (M) depending on an operation mode of the electrical motor (M).

    SHORT CIRCUIT DETECTION APPARATUS
    2.
    发明申请

    公开(公告)号:WO2023012361A1

    公开(公告)日:2023-02-09

    申请号:PCT/EP2022/072158

    申请日:2022-08-05

    Abstract: A short circuit detection apparatus (1) for detection of an electrical short circuit current flowing in at least one monitored current path from a voltage source (2) to an electrical load (3), wherein the short circuit detection apparatus (l)is connected to the monitored current path and comprises an evaluation circuit (8) including at least one programmable or preprogrammed arithmetic unit (8A) adapted to perform at least one arithmetic combination operation, ACOP, on a first voltage, VR, provided by a resistive element (6) of the monitored current path and being proportional to the electrical current, I, flowing via the monitored current path and on a second voltage, VL, provided by an inductive element (7) of the monitored current path and depending on a derivative of the electrical current, dl/dt, flowing via the monitored current path to provide a combined sensor voltage and including a comparator (8D) adapted to compare the combined sensor voltage provided by the programmable or preprogrammed arithmetic unit (8A) with a preset or an adjustable threshold voltage to generate a short circuit detection signal (SCDS) if the combined sensor voltage exceeds the threshold voltage.

    A FUNCTION ENHANCEMENT CONTROL CABINET MODULE FOR A CONTROL CABINET

    公开(公告)号:WO2023084037A1

    公开(公告)日:2023-05-19

    申请号:PCT/EP2022/081643

    申请日:2022-11-11

    Abstract: A Function Enhancement Control Cabinet Module, FECCM, (1) for a control cabinet (13), said Function Enhancement Control Cabinet Module, FECCM, (1) being integrated in a housing and comprising at least one energy interface (2) provided at a rear side of the housing of the Function Enhancement Control Cabinet Module, FECCM, (1) for connection of said Function Enhancement Control Cabinet Module, FECCM, (1) to a power distribution system (14) of said control cabinet (13); at least one application device interface (3) provided at a front side of the housing Function Enhancement Control Cabinet Module, FECCM, (1) for connection and power supply of at least one application device (15) to said Function Enhancement Control Cabinet Module, FECCM, (1); and comprising at least one internal bidirectional power supply path, PSP, provided between the energy interface (2) and the application device interface(3), wherein the at least one internal bidirectional power supply path, PSP, is adapted to feed electrical power from the power distribution system (14) connected to the energy interface (2) in a forward power supply direction to the application device (15) connected to the application device interface (3) or is adapted to feed electrical power in a reverse power supply direction from the application device (15) connected to the application device interface (3) to the power distribution system (14) connected to the energy interface (2).

    METHOD AND APPARATUS FOR DETECTION OF A FUSE FAILURE

    公开(公告)号:WO2022200589A1

    公开(公告)日:2022-09-29

    申请号:PCT/EP2022/057954

    申请日:2022-03-25

    Abstract: A method and apparatus for detection of a fuse failure of a protective fuse (5) used to protect an associated load (7) against overcurrent and/or against overload, the method comprising the steps of: measuring(SA) electrical current, Im, flowing through the protective fuse (5) in a current path to said load (7) by means of a current sensor element (2); determining( SB) one or more failure indicators, FIs, each adapted to indicate a possible failure of the protected fuse (5) on the basis of the measured electrical current, Im; and detecting (SC)automatically a failure of the protective fuse (5) if the determined at least one failure indicator, FI, indicates a possible failure of the protective fuse (5) and if the electrical current, Im, measured by the current sensor element (2) has stopped (Im=0) to flow through said protective fuse (5) or is below a predefined current threshold value (Im

    METHOD AND APPARATUS FOR PROTECTION OF AN ELECTRICAL LOAD AGAINST OVERVOLTAGE

    公开(公告)号:WO2022018234A1

    公开(公告)日:2022-01-27

    申请号:PCT/EP2021/070616

    申请日:2021-07-22

    Abstract: A protection apparatus (1) for protection of an electrical load (9), said protection apparatus (1) comprising: at least one input terminal (2) adapted to receive a power supply voltage; at least one semiconductor power switch (5) connected in series to the associated input terminal (2) in a power supply path (10) through which the electrical load (9) connected to an output terminal (3) of said power supply path (10) receives an electrical load current, IL; said protection apparatus (1) further comprising: a control unit (8) having a microprocessor (8A) adapted to control a driver circuit (6) of said protection apparatus (1) to switch the at least one semiconductor power switch (5) provided in the power supply path (10) on or off in response to a received switch command (CMD), said protection apparatus (1) further comprising: at least one overvoltage detection circuit, ODC, (12) connected to an associated power supply path (10) of said protection apparatus (1) and adapted to detect an overvoltage state at the respective power supply path (10) of said protection apparatus (1) and to control the driver circuit (6) directly through control lines (12, 20) connected to a driver input (IN) at a low voltage side (6A) of the driver circuit (6) to switch off the at least one semiconductor power switch (5) provided within the associated power supply path (10) if an overvoltage state has been detected by the overvoltage detection circuit, ODC, (12) to provide protection of the connected electrical load (9) against overvoltage.

    METHOD AND APPARATUS FOR CONTROLLING A POWER SUPPLY TO A PROTECTED ELECTRICAL LOAD

    公开(公告)号:WO2020169774A1

    公开(公告)日:2020-08-27

    申请号:PCT/EP2020/054553

    申请日:2020-02-20

    Abstract: A load control apparatus (1) for controlling a power supply to an electrical load connected to an output terminal (3) of the load control apparatus (1) comprising: an overcurrent protection circuit (1A) having a power switch (5) through which the electrical load receives an electrical load current (I L ) and having a sensor component (4) connected in series with the power switch (5) and adapted to generate directly a voltage drop (ΔU 4 ) corresponding to the current rise speed of the electrical load current (I L ) flowing from an input terminal (2) of the load control apparatus (1) via the sensor component (4) and the power switch (5) to the output terminal (3) and having a driver circuit (6) adapted to detect an occurring overcurrent depending on the voltage drop (ΔU 4 ) generated by the sensor component (4) and/or a voltage drop (ΔU 5 ) along the power switch (5) and adapted to switch off said power switch (5) upon detection of an overcurrent within a switch-off period of less than one millisecond; and/or comprising a power supply control circuit (1C) having a sensor component (9) adapted to measure at the input terminal (2) a supply voltage notified to a control unit (8) of the load control apparatus (1) adapted to control an electrical power supplied to the electrical load.

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