WO2014196065A1 - Equipement et système de protection contre les surtensions - Google Patents

Equipement et système de protection contre les surtensions Download PDF

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Publication number
WO2014196065A1
WO2014196065A1 PCT/JP2013/065724 JP2013065724W WO2014196065A1 WO 2014196065 A1 WO2014196065 A1 WO 2014196065A1 JP 2013065724 W JP2013065724 W JP 2013065724W WO 2014196065 A1 WO2014196065 A1 WO 2014196065A1
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WO
WIPO (PCT)
Prior art keywords
bus
overvoltage protection
abnormality detection
detection signal
positive
Prior art date
Application number
PCT/JP2013/065724
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English (en)
Japanese (ja)
Inventor
隆明 石井
荘平 大賀
野中　剛
勝志 寺園
Original Assignee
株式会社安川電機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社安川電機 filed Critical 株式会社安川電機
Priority to JP2015521241A priority Critical patent/JPWO2014196065A1/ja
Priority to PCT/JP2013/065724 priority patent/WO2014196065A1/fr
Publication of WO2014196065A1 publication Critical patent/WO2014196065A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0854—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load responsive to rate of change of current, couple or speed, e.g. anti-kickback protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1216—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage

Definitions

  • the disclosed embodiment relates to an overvoltage protection device and an overvoltage protection system.
  • Patent Document 1 a circuit breaker is disposed between the inverter and the permanent magnet AC motor, and the circuit breaker interrupts the electrical connection between the inverter and the permanent magnet AC motor based on the control of the motor ECU.
  • An overvoltage protection device is described.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide an overvoltage protection device and an overvoltage protection system that can prevent adverse effects due to overvoltage from a rotating electrical machine to a power converter. .
  • an overvoltage protection device connected to a rotating electrical machine, wherein a DC current input unit, a positive DC bus connected to the input unit, and a negative DC bus are connected to the input unit.
  • Power converter comprising: a side DC bus; an AC converter connected to the positive DC bus and the negative DC bus; a first capacitor connected between the positive DC bus and the negative DC bus And a switch provided in a connection path between the AC converter of the power converter and the rotating electrical machine, and an abnormality detection that outputs an abnormality detection signal of at least one of the power converter and the rotating electrical machine
  • the overvoltage protection device having a portion is applied.
  • an overvoltage protection device connected to a rotating electrical machine, wherein a DC current input unit and a positive DC bus connected to the input unit, respectively. And a negative DC bus, an AC converter connected to the positive DC bus and the negative DC bus, a first capacitor connected between the positive DC bus and the negative DC bus, and the positive side At least one of a second capacitor and a resistor, the at least one of the second capacitor and the resistor, and the positive DC bus connected to the first capacitor between the DC bus and the negative DC bus
  • a power converter having an open / close switch provided between the negative DC bus, an abnormality detection unit that outputs an abnormality detection signal of at least one of the power converter and the rotating electrical machine, A switch that is provided in a connection path between the AC converter of the power converter and the rotating electrical machine and that opens in response to the abnormality detection signal from the abnormality detector; the positive DC bus; and
  • An overvoltage protection device having a switch control unit that closes and opens the
  • the overvoltage protection device and the overvoltage protection system of the present invention it is possible to prevent adverse effects due to overvoltage from the rotating electrical machine to the power converter.
  • the overvoltage protection system 1 of the present embodiment includes a rotary motor 2 (rotary electric machine) and an overvoltage protection device 3 connected to the motor 2.
  • the motor 2 is configured as a so-called three-phase AC motor driven by three-phase (for example, U, V, W phase) AC power.
  • the motor 2 is not limited to being configured as a three-phase AC motor driven by three-phase AC power, but is configured as a so-called single-phase AC motor driven by single-phase AC power. Also good.
  • the motor 2 includes a stator and a rotor (none of which is shown) that is rotatably supported by the stator, and is coupled to the rotor by rotating the rotor with respect to the stator.
  • the shaft (not shown) is rotated to output the rotational force.
  • stator is configured as an armature having a winding (not shown), and the rotor is configured as a field having a magnet (not shown) that generates a magnetic field.
  • the stator may be configured as a field having a magnet, and the rotor may be configured as an armature having a winding.
  • the overvoltage protection device 3 cuts off the connection between the inverter device 10 (power conversion device) that converts DC power into AC power and the electromagnetic switch 20 (switch, the AC conversion unit of the power conversion device, and the rotating electrical machine. Means).
  • the inverter device 10 includes a converter unit 11 (DC current input unit), a capacitor 12 (first capacitor, means for suppressing rise of voltage between the positive DC bus and the negative DC bus), and an inverter unit 13. (AC converter) and an abnormality detector 14 (means for detecting at least one abnormality of the power converter and the rotating electrical machine).
  • a converter unit 11 DC current input unit
  • a capacitor 12 first capacitor, means for suppressing rise of voltage between the positive DC bus and the negative DC bus
  • an inverter unit 13 AC converter
  • an abnormality detector 14 means for detecting at least one abnormality of the power converter and the rotating electrical machine.
  • the converter unit 11 includes six diodes, rectifies three-phase (for example, R, S, and T-phase) AC power supplied from the three-phase AC power supply 4, and a DC bus P that is a positive DC bus, and DC power is supplied to a DC bus N which is a negative DC bus.
  • the converter unit 11 is not limited to the case where it is configured by six diodes, and may have other configurations.
  • the AC power supply for supplying AC power to the converter unit 11 is not limited to the three-phase AC power supply 4 for supplying three-phase AC power, and may be a single-phase AC power supply for supplying single-phase AC power or the like. .
  • the power source for supplying power to the inverter device 10 is not limited to the AC power source for supplying AC power, but may be a DC power source for supplying DC power.
  • the power source that supplies power to the inverter device 10 is a DC power source, the converter unit 11 is not necessarily required.
  • the capacitor 12 is connected between the DC buses P and N, and absorbs or discharges the electric charge between the DC buses P and N due to capacitance.
  • the inverter unit 13 is connected to the DC buses P and N, and includes six switching elements and six free-wheeling diodes connected in reverse parallel to the six switching elements.
  • the inverter part 13 is not limited to when comprised with six switching elements and six free-wheeling diodes, Other structures may be sufficient.
  • the inverter unit 13 converts DC power into three-phase (for example, U, V, W phase) AC power and supplies it to the motor 2.
  • the abnormality detection unit 14 detects an abnormality in at least one of the inverter device 10 and the motor 2 that is driving the inverter device 10 and outputs a corresponding abnormality detection signal to an open / close switch 25 (described later) of the electromagnetic switch 20.
  • the induced voltage (back electromotive voltage) applied from the motor 2 between the DC buses P and N exceeds the withstand voltage of the inverter device 10, thereby causing the inverter device 10 to There is a risk of adverse effects.
  • the abnormality of at least one of the inverter device 10 and the motor 2 is variously exemplified and is not particularly limited.
  • an abnormality in at least one of the inverter device 10 and the motor 2 is a torque abnormality (overtorque) that deviates from a presumed torque range, and deviates from a presumed speed range.
  • a torque abnormality overtorque
  • the abnormality detection unit 14 detects an overtorque detection signal that is a corresponding abnormality detection signal.
  • the abnormality detection unit 14 detects an overspeed detection signal that is a corresponding abnormality detection signal.
  • a speed deviation abnormality detection signal which is a corresponding abnormality detection signal, is output to the open / close switch 25 (described later) of the electromagnetic switch 20.
  • the abnormality of at least one of the inverter device 10 and the motor 2 is at least one of overtorque, overspeed, and speed deviation abnormality.
  • the case where the detection unit 14 outputs any one of an overtorque detection signal, an overspeed detection signal, and a speed deviation abnormality detection signal will be described.
  • the type of abnormality detection signal output by the abnormality detection unit 14 is the above signal. It is not limited to.
  • the electromagnetic switch 20 includes three contacts 21 to 23, an electromagnetic coil 24 to which single-phase AC power is supplied from the single-phase AC power supply 5, and an open / close switch 25.
  • the power source that supplies power to the electromagnetic coil 24 is not limited to the single-phase AC power source 5 that supplies single-phase AC power, and may be a DC power source that supplies DC power.
  • the contacts 21 to 23 are provided in connection paths w1 to w3 between the inverter unit 13 of the inverter device 10 and the motor 2, respectively. These contacts 21 to 23 are closed when the inverter device 10 is normally driven, that is, when none of the over-torque detection signal, over-speed detection signal, and speed deviation abnormality detection signal is input to the open / close switch 25. Thus, the inverter device 10 and the motor 2 are connected so that three-phase AC power is supplied to the motor 2.
  • the open / close switch 25 is provided on the bus b1 (or the bus b2) among the buses b1 and b2 connected to the electromagnetic coil 24 and the single-phase AC power source 5.
  • the open / close switch 25 is simply opened when the inverter device 10 is normally driven, that is, when none of the over-torque detection signal, over-speed detection signal, and speed deviation abnormality detection signal is input.
  • the current from the phase AC power supply 5 is prevented from flowing into the electromagnetic coil 24 (the electromagnetic coil 24 is not conducted).
  • an electromagnetic switch 20 at least one of overtorque, overspeed, and speed deviation abnormality occurs during driving of the inverter device 10, and an overtorque detection signal, an overspeed detection signal, and a speed deviation abnormality detection signal are detected.
  • the open / close switch 25 When at least one of them is input to the open / close switch 25, the open / close switch 25 is closed to enter a closed state, so that a current from the single-phase AC power supply 5 flows to the electromagnetic coil 24.
  • the contacts 21 to 23 are opened to enter an open state, thereby disconnecting (disconnecting) the connection between the inverter device 10 and the motor 2.
  • the connection between the inverter device 10 and the motor 2 is cut off by the electromagnetic switch 20 will be described.
  • connection between the inverter device 10 and the motor 2 is cut off by a switch other than the electromagnetic switch 20. May be. By the way, a predetermined time is required until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2.
  • the electromagnetic switch 20 when at least one of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is input to the open / close switch 25 of the electromagnetic switch 20, the electromagnetic switch 20 is connected to the inverter device 10 and the motor.
  • the connection with 2 is started.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N until a predetermined time elapses until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2. Thereby, the capacitor 12 suppresses the rise of the voltage between the DC buses P and N due to the induced voltage from the motor 2.
  • FIG. 2 shows a graph in which the horizontal axis represents time t and the vertical axis represents the voltage V applied between the DC buses P and N.
  • the voltage V between the DC buses P and N rises with time t.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N
  • the increase in the voltage V between the DC buses P and N is slower (slower) than in the comparative example.
  • the DC bus P, before the voltage V between the N is an overvoltage exceeding the breakdown voltage V max of the inverter 10, that blocking the connection between the inverter device 10 and the motor 2 by the electromagnetic switch 20 is completed, Eventually, the voltage V between the DC buses P and N becomes constant.
  • the overvoltage protection device 3 of the present embodiment includes the abnormality detection unit 14 and the electromagnetic switch 20.
  • the contacts 21 to 23 of the electromagnetic switch 20 are opened according to an abnormality detection signal from the abnormality detection unit 14, thereby connecting the inverter device 10 and the motor 2. Can be separated.
  • a predetermined time is required until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2.
  • the capacitor 12 is connected between the DC buses P and N.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N, so that the voltage between the DC buses P and N due to the induced voltage from the motor 2 is increased. Can be suppressed.
  • the contacts 21 to 23 of the electromagnetic switch 20 open in response to an abnormality detection signal from the abnormality detection unit 14.
  • the contacts 21 to 23 of the electromagnetic switch 20 By opening the contacts 21 to 23 of the electromagnetic switch 20 according to the abnormality detection signal from the abnormality detection unit 14, the connection between the inverter device 10 and the motor 2 can be reliably disconnected.
  • the abnormality detection unit 14 outputs at least one of an overtorque detection signal, an overspeed detection signal, and a speed deviation abnormality detection signal.
  • the overvoltage protection system 1 of this embodiment includes a motor 2 and an overvoltage protection device 3.
  • the motor 2 is the same as that in the first embodiment.
  • the overvoltage protection device 3 includes an inverter device 10, an electromagnetic switch 20, and a voltage detector 30 provided outside the inverter device 10.
  • the voltage detector 30 may be provided inside the inverter device 10.
  • the inverter device 10 includes a converter unit 11, a capacitor 12, an inverter unit 13, an abnormality detection unit 14, a capacitor 15 (second capacitor), a resistor 16, and an open / close switch 17.
  • the converter unit 11, the capacitor 12, the inverter unit 13, and the abnormality detection unit 14 are the same as those in the first embodiment.
  • the capacitor 15 and the resistor 16 are connected in parallel with the capacitor 12 between the DC buses P and N.
  • the capacitor 15 absorbs or discharges the electric charge between the DC buses P and N due to the capacitance.
  • the resistor 16 consumes power.
  • the open / close switch 17 is provided between the capacitor 15 and the resistor 16 and the DC bus P (or DC bus N).
  • the open / close switch 17 is opened when the inverter device 10 is normally driven, specifically when a switch control signal to be described later is not input, so that the capacitor 15 and the resistor are connected between the DC buses P and N. 16 is not connected (the capacitor 15 and the resistor 16 are not conducted).
  • the electromagnetic switch 20 is the same as that in the first embodiment.
  • the voltage detector 30 includes a voltage detection unit 31 and a switch control unit 32.
  • the voltage detector 31 detects the voltage between the DC buses P and N.
  • the switch control unit 32 outputs a control signal (hereinafter referred to as “switch control signal” as appropriate) to the open / close switch 17 of the inverter device 10 in accordance with the voltage value between the DC buses P and N detected by the voltage detection unit 31. . Specifically, the switch control unit 32 outputs a switch control signal to the open / close switch 17 when the voltage value between the DC buses P and N detected by the voltage detection unit 31 exceeds a predetermined voltage threshold value. To do.
  • the electromagnetic switch 20 when at least one of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is input to the open / close switch 25 of the electromagnetic switch 20, the electromagnetic switch 20 is connected to the inverter device 10 and the motor.
  • the connection with 2 is started.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N until a predetermined time elapses until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2. Thereby, the capacitor 12 suppresses the rise of the voltage between the DC buses P and N due to the induced voltage from the motor 2.
  • the switch control unit 32 outputs a switch control signal to the open / close switch 17.
  • the open / close switch 17 is closed to enter the closed state, thereby connecting the capacitor 15 and the resistor 16 in parallel with the capacitor 12 between the DC buses P and N.
  • the capacitors 12 and 15 cooperate to absorb the electric charge between the DC buses P and N by their total capacity, thereby suppressing the rise of the voltage between the DC buses P and N due to the induced voltage from the motor 2.
  • the resistor 16 consumes the electric charge stored in the capacitor 12 to reduce the voltage between the DC buses P and N.
  • the switch control unit 32 When the voltage between the DC buses P and N drops to a certain value, the switch control unit 32 outputs a control signal to the open / close switch 17. As a result, the open / close switch 17 is opened to enter the open state, thereby releasing the connection of the capacitor 15 and the resistor 16 between the DC buses P and N.
  • FIG. 4 shows a graph in which the horizontal axis represents time t and the vertical axis represents the voltage V applied between the DC buses P and N.
  • the voltage V between the DC buses P and N rises with time t.
  • the capacitor 15 and the resistor 16 are connected in parallel with the capacitor 12 between the DC buses P and N.
  • the charge between the DC buses P and N is absorbed by the capacitors 12 and 15 and the charge stored in the capacitor 12 is consumed by the resistor 16, thereby increasing the voltage V between the DC buses P and N. Is slower (slower) than the comparative example.
  • a capacitor 15 and a resistor 16 and an open / close switch 17 are provided.
  • the capacitor 15 and the resistor 16 can be connected in parallel between the DC buses P and N in addition to the capacitor 12.
  • the capacitors 12 and 15 cooperate with each other until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2 until the total capacity thereof charges.
  • the resistor 16 consumes the charge accumulated in the capacitor 12 until the predetermined time elapses, so that the voltage between the DC buses P and N can be actively reduced.
  • the switch control unit 32 of the voltage detector 30 closes the open / close switch 17 in accordance with the voltage value between the DC buses P and N.
  • the switch control unit 32 of the voltage detector 30 closes the open / close switch 17 in accordance with the voltage value between the DC buses P and N.
  • the capacitor 15 and the resistor 16 are provided, and when the voltage value between the DC buses P and N drops again to a certain value after the open / close switch 17 is closed as described above.
  • the open / close switch 17 is opened, and the charge stored in the capacitor 15 can be consumed by the resistor 16.
  • the overvoltage protection system 1 of this embodiment includes a motor 2 and an overvoltage protection device 3.
  • the motor 2 is the same as that in the first embodiment.
  • the overvoltage protection device 3 includes an inverter device 10 and an electromagnetic switch 20.
  • the inverter device 10 includes a converter unit 11, a capacitor 12, an inverter unit 13, an abnormality detection unit 14 ′ (means for detecting at least one abnormality among the switch control unit, the power conversion device, and the rotating electric machine), and a capacitor 15. And a resistor 16 and an open / close switch 17 '.
  • the converter unit 11, the capacitor 12, and the inverter unit 13 are the same as those in the first embodiment.
  • the abnormality detection unit 14 Similar to the above-described abnormality detection unit 14, the abnormality detection unit 14 'detects a corresponding over-torque detection signal when detecting the above-described over-torque, and detects a corresponding over-speed detection when detecting the above-described over-speed.
  • a corresponding speed deviation abnormality detection signal is output to the opening / closing switch 25 and the opening / closing switch 17 ′ of the electromagnetic switch 20.
  • the capacitor 15 and the resistor 16 are the same as those in the second embodiment.
  • the open / close switch 17 ' is provided between the capacitor 15 and the resistor 16 and the DC bus P (or DC bus N).
  • the opening / closing switch 17 ′ is in an open state when the inverter device 10 is normally driven, specifically, when any of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is not input.
  • the capacitor 15 and the resistor 16 are not connected between the DC buses P and N (the capacitor 15 and the resistor 16 are not conducted).
  • the open / close switch 17 ′ generates at least one of overtorque, overspeed, and speed deviation abnormality during driving of the inverter device 10, and includes an overtorque detection signal, an overspeed detection signal, and a speed deviation abnormality detection signal. When at least one of them is input, the closing operation is performed and the capacitor 15 and the resistor 16 are connected in parallel with the capacitor 12 between the DC buses P and N.
  • the electromagnetic switch 20 is the same as that in the first embodiment.
  • the electromagnetic switch 20 when at least one of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is input to the open / close switch 25 of the electromagnetic switch 20, the electromagnetic switch 20 is connected to the inverter device 10 and the motor. The connection with 2 is started. At the same time, when at least one of the over-torque detection signal, the over-speed detection signal, and the speed deviation abnormality detection signal is input to the open / close switch 17 ′, the open / close switch 17 ′ is closed to enter the closed state.
  • the capacitor 15 and the resistor 16 are connected in parallel with the capacitor 12 between the DC buses P and N.
  • the capacitors 12 and 15 work together until the electromagnetic switch 20 completes the disconnection of the connection between the inverter device 10 and the motor 2, and the DC bus P is determined by their total capacity. , N is absorbed, the rise of the voltage between the DC buses P, N due to the induced voltage from the motor 2 is suppressed. At the same time, the resistor 16 consumes the electric charge stored in the capacitor 12 to reduce the voltage between the DC buses P and N.
  • the capacitors 12 and 15 cooperate until the electromagnetic switch 20 completes a predetermined time until the connection between the inverter device 10 and the motor 2 is completed.
  • the resistor 16 consumes the charge accumulated in the capacitor 12 until the predetermined time elapses, so that the voltage between the DC buses P and N can be actively reduced.
  • the abnormality detection unit 14 ' closes the open / close switch 17' in response to the abnormality detection signal.
  • the capacitor 15 and the resistor 16 are connected in parallel between the DC buses P and N in addition to the capacitor 12, thereby adversely affecting the inverter device 10 due to overvoltage caused by the induced voltage from the motor 2. Can be reliably prevented.
  • the inverter device 10 to which no abnormality detection signal is output is normally driven, it is possible to avoid unnecessary loss by opening the open / close switch 17 ′.
  • the overvoltage protection system 1 of the present embodiment includes a variable field motor device 6 (rotary electric machine), an overvoltage protection device 3, and a field adjustment mechanism 8 (field adjustment unit).
  • variable field motor device 6 has a rotary motor 2 'and a hydraulic drive mechanism 7 (variable field mechanism, mechanical drive mechanism).
  • the motor 2 ' is configured as a three-phase AC motor.
  • the motor 2 ' is not limited to the case where it is configured as a three-phase AC motor, and may be configured as a single-phase AC motor or the like.
  • the motor 2 ' has a stator 110 and a rotor 120 supported so as to be rotatable with respect to the stator 110. By rotating with respect to the stator 110, the shaft 130 coupled to the rotor 120 is rotated to output a rotational force.
  • the stator 110 includes a winding 111 formed of an air-core coil and an iron core 112, and is configured as an armature.
  • the rotor 120 includes a magnetic pole portion 121 that generates a magnetic field and an iron core 122, and is configured as a field.
  • the magnetic pole part 121 is divided into three in the axial direction, and the load-side magnetic pole part 121b and the anti-load-side magnetic pole part 121c can be rotated relative to the central magnetic pole part 121a fixed to the outer periphery of the shaft 130. ing.
  • Each of the magnetic pole portions 121a, 121b, and 121c is configured by mounting a magnet 123 that generates a magnetic field in a substantially V-shaped mounting hole provided in the iron core 122 with the magnetization direction facing or back.
  • a hydraulic control unit (not shown) provided in the variable field motor device 6 passes through the magnetizing side oil introducing path 132 and the demagnetizing side oil introducing path 133 provided in the shaft 130, and the hydraulic pressure provided in the shaft 130. Hydraulic pressure is supplied to the chamber 134. Accordingly, the hydraulic control unit moves the movable pressure receiving plate 150 mounted in the hydraulic chamber 134 in the circumferential direction, and the load side field pole portion 121b and the anti-load side magnetic pole portion fastened integrally with the pressure receiving plate 150. By rotating the 121c relative to the magnetic pole part 121a at the center, the interlinkage magnetic flux interlinking between the stator 110 and the rotor 120 is changed.
  • the hydraulic drive mechanism 7 includes the hydraulic control unit, the magnetizing side oil introducing path 132, the demagnetizing side oil introducing path 133, the hydraulic chamber 134, the pressure receiving plate 150, and the like.
  • the hydraulic drive mechanism 7 supplies the hydraulic pressure to the hydraulic chamber 134 under the control of the hydraulic control unit, thereby rotating the load-side field pole portion 121b and the anti-load-side magnetic pole portion 121c relative to the central magnetic pole portion 121a.
  • the flux linkage is changed by mechanical adjustment of the rotor 120, such as moving it.
  • the overvoltage protection device 3 includes an inverter device 10 and an electromagnetic switch 20.
  • the inverter device 10 includes a converter unit 11, a capacitor 12, an inverter unit 13, and an abnormality detection unit 14 ′′ (means for detecting at least one abnormality among the power conversion device and the rotating electric machine).
  • the converter unit 11, the capacitor 12, and the inverter unit 13 are the same as those in the first embodiment.
  • the abnormality detection unit 14 detects a corresponding overtorque signal when detecting the above-described overtorque, and detects a corresponding overspeed detection when detecting the above-described overspeed.
  • a corresponding speed deviation abnormality detection signal is output to the open / close switch 25 of the electromagnetic switch 20 and the field adjustment mechanism 8.
  • the electromagnetic switch 20 is the same as that in the first embodiment.
  • the field adjustment mechanism 8 weakens the magnetic field factor with respect to the hydraulic control unit of the hydraulic drive mechanism 7 when any of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is input.
  • a control signal for setting to 0 is output.
  • the field ratio is a ratio of an induced voltage constant in a state where the load-side magnetic pole part 121b and the anti-load-side magnetic pole part 121c are relatively rotated with respect to the central magnetic pole part 121a.
  • the hydraulic control unit of the hydraulic drive mechanism 7 controls the hydraulic pressure supplied to the hydraulic chamber 134 in accordance with the control signal input from the field adjustment mechanism 8, and the load side field pole part 121 b and the central magnetic pole part 121 a The relative rotation of the non-load-side magnetic pole part 121c is controlled.
  • the hydraulic drive mechanism 7 reduces the induced voltage generated from the motor 2 ′ by changing the flux linkage to weaken or adjust the magnetic field to zero.
  • a relatively large response delay occurs until the magnetic flux change is completed.
  • the electromagnetic switch 20 when at least one of the overtorque detection signal, the overspeed detection signal, and the speed deviation abnormality detection signal is input to the open / close switch 25 of the electromagnetic switch 20, the electromagnetic switch 20 is connected to the inverter device 10 and the motor. The connection with 2 'is started.
  • the field adjustment mechanism 8 when at least one of an overtorque detection signal, an overspeed detection signal, and a speed deviation abnormality detection signal is input to the field adjustment mechanism 8, the field adjustment mechanism 8 becomes a hydraulic control unit of the hydraulic drive mechanism 7. A control signal is output.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N until a predetermined time elapses until the electromagnetic switch 20 completes the disconnection between the inverter device 10 and the motor 2 '. As a result, the capacitor 12 suppresses the rise of the voltage between the DC buses P and N due to the induced voltage from the motor 2 '.
  • the field adjustment mechanism 8 sets the field ratio to the hydraulic control unit of the hydraulic drive mechanism 7 of the variable field motor device 6 in accordance with the abnormality detection signal from the abnormality detection unit 14 ′′. Since the induced voltage generated from the motor 2 'can be reduced, the voltage between the DC buses P and N can be reduced until the inverter device 10 and the motor 2' are completely shut off. The rising edge can be further reliably suppressed.
  • variable field motor device 6 includes the hydraulic drive mechanism 7 in particular.
  • the hydraulic drive mechanism 7 changes the linkage flux in response to this, and the induced voltage generated from the motor 2 ′ can be reduced.
  • the rise of the voltage between the DC buses P and N can be more reliably suppressed until the inverter device 10 and the motor 2 'are completely shut off.
  • the hydraulic drive mechanism 7 changes the flux linkage by mechanical adjustment with respect to the rotor 120.
  • the hydraulic drive mechanism 7 changes the flux linkage in order to reduce the induced voltage in this way, a relatively large response delay occurs until the magnetic flux change is completed. Therefore, the function of suppressing the rise of the voltage between the DC buses P and N by the capacitor 12 as described above is particularly effective.
  • the field adjustment mechanism 8 outputs a control signal that weakens or sets the field factor to 0 to the hydraulic control unit of the hydraulic drive mechanism 7.
  • the overvoltage protection system 1 includes a variable field motor device 6, an overvoltage protection device 3, and a field adjustment mechanism 8.
  • variable field motor device 6 is the same as that in the fourth embodiment.
  • the overvoltage protection device 3 has an inverter device 10.
  • the inverter device 10 includes a converter unit 11, a capacitor 12, an inverter unit 13, and an abnormality detection unit 14 ⁇ / b> A (means for detecting at least one abnormality among the power conversion device and the rotating electric machine).
  • the converter unit 11, the capacitor 12, and the inverter unit 13 are the same as those in the first embodiment.
  • the abnormality detection unit 14A detects a corresponding overtorque signal when detecting the above-described overtorque, and detects a corresponding overspeed detection signal when detecting the above-described overspeed.
  • a corresponding speed deviation abnormality detection signal is output to the field adjustment mechanism 8.
  • the field adjustment mechanism 8 is the same as that in the fourth embodiment.
  • the field adjustment mechanism 8 controls the hydraulic control of the hydraulic drive mechanism 7.
  • a control signal is output to the unit.
  • the field adjustment mechanism 8 controls the hydraulic control unit of the hydraulic drive mechanism 7 of the variable field motor device 6 in accordance with the abnormality detection signal from the abnormality detection unit 14A. Outputs a control signal that weakens the magnetic field. Thereby, the induced voltage generated from the motor 2 'can be reduced.
  • the capacitor 12 is connected between the DC buses P and N.
  • the capacitor 12 absorbs the electric charge between the DC buses P and N, so that the voltage between the DC buses P and N due to the induced voltage from the motor 2 is increased. Can be suppressed.
  • the inverter device 10 includes the abnormality detection units 14, 14 ′, 14 ′′, 14A has been described, but the present invention is not limited to this.
  • An anomaly detection unit may be provided outside.
  • the said 2nd Embodiment demonstrated the case where the inverter apparatus 10 was provided with the capacitor
  • the present invention can be applied to the case where the inverter device 10 includes any one of the capacitor 15 and the resistor 16 connected in parallel with the capacitor 12 between the DC buses P and N.
  • variable field motor device 6 includes the hydraulic drive mechanism 7 .
  • the present invention is not limited to this.
  • the variable field motor device 6 has a mechanism (variable field mechanism, mechanical drive mechanism) that changes the linkage flux by mechanical adjustment to a rotor different from the mechanism in which the hydraulic drive mechanism 7 changes the linkage flux. ) May be provided.
  • the variable field motor device 6 may include a mechanism (variable field mechanism) that changes the flux linkage by adjusting the rotor other than mechanical (for example, electrical adjustment).
  • the overvoltage protection device 3 includes the inverter device 10 that converts DC power into AC power.
  • the present invention is not limited to this.
  • the present invention can be applied to a case where the overvoltage protection device 3 includes a converter device, a power conditioner, or the like that converts AC power to DC power as a power converter.
  • the overvoltage protection device 3 includes the motors 2 and 2 ′ that are AC motors driven by AC power.
  • the present invention is not limited to this.
  • the present invention can also be applied when the overvoltage protection device 3 includes a DC motor (rotary electric machine) that is driven by DC power.
  • the overvoltage protection system 1 includes the motors 2 and 2 ′ that are electric motors.
  • the present invention is not limited to this.
  • the present invention can also be applied when the overvoltage protection system 1 includes a generator (rotating electric machine).
  • Overvoltage protection system 2 Motor (rotary electric machine) 3 Overvoltage protection device 6 Variable control motor device (rotary electric machine) 7 Hydraulic drive mechanism (variable field mechanism, mechanical drive mechanism) 8 Field adjustment mechanism (Field adjustment mechanism) 10 Inverter device (power converter) 11 Converter section (DC current input section) 12 capacitor (first capacitor, means for suppressing the rise of the voltage between the positive DC bus and the negative DC bus) 13 Inverter part (AC converter) 14 Abnormality detection unit (means for detecting an abnormality of at least one of the power converter and the rotating electrical machine) 14 'abnormality detection unit (means for detecting an abnormality of at least one of the switch control unit, the power converter, and the rotating electrical machine) 14 ′′ abnormality detection unit (means for detecting abnormality of at least one of the power converter and the rotating electric machine) 14A Abnormality detection unit (means for detecting an abnormality in at least one of the power converter and the rotating electrical machine) 15 Capacitor (second capacitor) 16 Resistance 17 Open / close switch 20 Electrom

Abstract

Le problème à résoudre par la présente invention est d'empêcher une machine électrique tournante d'affecter un appareil de conversion électronique de puissance en raison d'une surtension. La solution de l'invention porte sur un équipement (3) de protection contre les surtensions qui comporte : un appareil (10) inverseur, qui comporte une section (11) de conversion, des bus (P, N) de courant continu qui sont raccordés à la section (11) de conversion, une section (13) d'onduleur qui est raccordée aux bus (P, N) de courant continu, et un condensateur (12) qui est branché entre les bus (P, N) de courant continu ; un commutateur électromagnétique (20) qui est disposé sur les trajets (w1-w3) de raccordement entre un moteur électrique (2) et la section (13) d'onduleur de l'appareil (10) inverseur ; et une section (14) de détection d'anomalies, qui émet un signal de détection d'anomalies de l'appareil (10) inverseur et/ou du moteur électrique (2).
PCT/JP2013/065724 2013-06-06 2013-06-06 Equipement et système de protection contre les surtensions WO2014196065A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015521241A JPWO2014196065A1 (ja) 2013-06-06 2013-06-06 過電圧保護装置及び過電圧保護システム
PCT/JP2013/065724 WO2014196065A1 (fr) 2013-06-06 2013-06-06 Equipement et système de protection contre les surtensions

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108134375A (zh) * 2018-03-09 2018-06-08 核工业理化工程研究院 永磁同步电机控制电路的保护装置
JP2019176559A (ja) * 2018-03-27 2019-10-10 株式会社Ｓｕｂａｒｕ 車両用電源装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0919003A (ja) * 1995-06-27 1997-01-17 Honda Motor Co Ltd 電動車両におけるコンデンサの劣化判定装置
JP2003333862A (ja) * 2002-05-15 2003-11-21 Toshiba Corp 電力変換装置
WO2007072622A1 (fr) * 2005-12-21 2007-06-28 Honda Motor Co., Ltd. Moteur électrique
WO2011104848A1 (fr) * 2010-02-25 2011-09-01 三菱電機株式会社 Dispositif de conversion électrique
WO2012105266A1 (fr) * 2011-02-03 2012-08-09 パナソニック株式会社 Dispositif d'entraînement de moteur
JP2013046440A (ja) * 2011-08-22 2013-03-04 Yaskawa Electric Corp 回転電機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0919003A (ja) * 1995-06-27 1997-01-17 Honda Motor Co Ltd 電動車両におけるコンデンサの劣化判定装置
JP2003333862A (ja) * 2002-05-15 2003-11-21 Toshiba Corp 電力変換装置
WO2007072622A1 (fr) * 2005-12-21 2007-06-28 Honda Motor Co., Ltd. Moteur électrique
WO2011104848A1 (fr) * 2010-02-25 2011-09-01 三菱電機株式会社 Dispositif de conversion électrique
WO2012105266A1 (fr) * 2011-02-03 2012-08-09 パナソニック株式会社 Dispositif d'entraînement de moteur
JP2013046440A (ja) * 2011-08-22 2013-03-04 Yaskawa Electric Corp 回転電機

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108134375A (zh) * 2018-03-09 2018-06-08 核工业理化工程研究院 永磁同步电机控制电路的保护装置
JP2019176559A (ja) * 2018-03-27 2019-10-10 株式会社Ｓｕｂａｒｕ 車両用電源装置
JP7041567B2 (ja) 2018-03-27 2022-03-24 株式会社Subaru 車両用電源装置

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