WO2023105786A1 - Electric safety device for elevator, and elevator device - Google Patents

Electric safety device for elevator, and elevator device Download PDF

Info

Publication number
WO2023105786A1
WO2023105786A1 PCT/JP2021/045648 JP2021045648W WO2023105786A1 WO 2023105786 A1 WO2023105786 A1 WO 2023105786A1 JP 2021045648 W JP2021045648 W JP 2021045648W WO 2023105786 A1 WO2023105786 A1 WO 2023105786A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
voltage
power supply
contact
elevator
Prior art date
Application number
PCT/JP2021/045648
Other languages
French (fr)
Japanese (ja)
Inventor
猛彦 久保田
Original Assignee
三菱電機株式会社
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.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2023566057A priority Critical patent/JPWO2023105786A1/ja
Priority to PCT/JP2021/045648 priority patent/WO2023105786A1/en
Publication of WO2023105786A1 publication Critical patent/WO2023105786A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices

Definitions

  • the present disclosure relates to elevator electrical safety devices and elevator devices.
  • Patent Document 1 describes an elevator device.
  • the elevator device described in Patent Document 1 includes a door chain circuit in which a contact of a car door switch and a plurality of contacts of a landing door switch are connected in series. If the door chain circuit is closed, the relay contacts are closed. The relay relay contacts are included in the safety chain circuit.
  • Elevator equipment is equipped with an electrical safety device that stops power supply to the hoist when a specific abnormality is detected.
  • a device including a door chain circuit and a safety chain circuit described in Patent Document 1 is an example of an electrical safety device.
  • the present disclosure was made to solve the problems described above. SUMMARY OF THE DISCLOSURE It is an object of the present disclosure to provide an elevator electrical safety device that can reduce costs. Another object of the present disclosure is to provide an elevator system with such an electrical safety device.
  • An elevator electrical safety device includes a single-phase bridge inverter circuit for converting DC voltage to AC voltage from a safety chain circuit including a plurality of safety device contacts connected in series, and a first contact of a car door switch. a first contact circuit connected to a first output on the AC side of the single-phase bridge inverter circuit; a plurality of second contacts of the landing door switch; When the second contact circuit connected to the second output on the AC side of the bridge inverter circuit, the first contact and the plurality of second contacts are closed, the first contact circuit and the second contact circuit are removed from the single-phase bridge inverter circuit. and a single-phase rectifier circuit for converting an AC voltage input through the DC voltage into a DC voltage.
  • the elevator apparatus includes the above electrical safety device, a converter circuit that converts an AC voltage from an AC power supply to a DC voltage, a smoothing capacitor connected to the DC side of the converter circuit, and a an inverter circuit that converts a DC voltage into an AC voltage and drives the motor of the hoist.
  • the cost required for elevator electrical safety devices can be reduced.
  • FIG. 1 is a diagram showing an example of an elevator device according to Embodiment 1;
  • FIG. 1 is a diagram showing an example of an elevator device according to Embodiment 1;
  • FIG. It is a figure which expands and shows an electric safety device. It is a figure for demonstrating the function of an electrical safety device. It is a figure for demonstrating the function of an electrical safety device. It is a figure for demonstrating the function of an electrical safety device. It is a figure for demonstrating the function of an electrical safety device.
  • FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1;
  • FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1;
  • FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1;
  • Embodiment 1. 1 and 2 are diagrams showing an example of an elevator device according to Embodiment 1.
  • the elevator system includes a converter circuit 2, a bus 3, a smoothing capacitor 4, an inverter circuit 5, and a control circuit 6.
  • the converter circuit 2 is connected to the AC power supply 1 via the main breaker.
  • the AC power supply 1 is, for example, a commercial three-phase AC power supply.
  • the converter circuit 2 converts the AC voltage from the AC power supply 1 into a DC voltage.
  • Bus line 3 is connected between converter circuit 2 and inverter circuit 5 .
  • a DC voltage from the converter circuit 2 is supplied to the bus 3 .
  • a smoothing capacitor 4 is connected to the DC side of the converter circuit 2, that is, between the bus lines 3. Smoothing capacitor 4 smoothes the DC voltage from converter circuit 2 .
  • the inverter circuit 5 converts the DC voltage smoothed by the smoothing capacitor 4 into an AC voltage.
  • FIG. 1 shows an example in which the inverter circuit 5 includes an IGBT (Insulated Gate Bipolar Transistor) as a switching element and a freewheeling diode connected in anti-parallel to the IGBT.
  • the inverter circuit 5 is controlled by the control circuit 6 . That is, the control circuit 6 controls switching elements included in the inverter circuit 5 .
  • the elevator device further comprises a car 7, a counterweight 8, a rope 9, and a hoist 10.
  • the hoisting machine 10 comprises a drive sheave 11 , a motor 12 and a braking device 13 .
  • FIG. 2 shows an example of a 1:1 roping elevator system.
  • the rope 9 is wound around the drive sheave 11.
  • a motor 12 generates a force for rotating the drive sheave 11 .
  • the car 7 moves in a direction corresponding to the direction of rotation of the drive sheave 11 . That is, when the motor 12 is driven by the inverter circuit 5, the drive sheave 11 rotates and the car 7 moves.
  • the brake device 13 has a brake coil 14 .
  • the brake device 13 generates a force to prevent the drive sheave 11 from rotating. In the following, this force is also referred to as blocking force.
  • the elevator device further comprises a DC-DC converter 15, a drive circuit 16, a control circuit 17, a control circuit 18, and a power supply circuit 19.
  • the DC-DC converter 15 includes a single-phase bridge inverter circuit 20 , an isolation transformer 21 and a single-phase diode bridge circuit 22 .
  • the drive circuit 16 is a circuit for driving the brake device 13. If the brake coil 14 is not energized, the braking device 13 produces a blocking force. When current flows through the brake coil 14, the blocking force disappears.
  • FIG. 1 shows an example in which the drive circuit 16 includes a MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) as a switching element.
  • Drive circuit 16 is controlled by control circuit 18 . That is, the control circuit 18 controls switching elements included in the drive circuit 16 .
  • the single-phase bridge inverter circuit 20 is connected to the primary side coil of the isolation transformer 21 .
  • the single-phase bridge inverter circuit 20 converts the DC voltage from the bus 3 into AC voltage.
  • the AC voltage converted by the single-phase bridge inverter circuit 20 is supplied to the primary coil of the isolation transformer 21 .
  • the single-phase diode bridge circuit 22 is connected to the secondary side coil of the isolation transformer 21 .
  • the single-phase diode bridge circuit 22 converts AC voltage induced in the secondary coil of the insulating transformer 21 into DC voltage.
  • a DC voltage converted by the single-phase diode bridge circuit 22 is supplied to the drive circuit 16 . That is, the DC-DC converter 15 supplies a DC voltage to the drive circuit 16 .
  • the DC-DC converter 15 functions as a power supply circuit for the drive circuit 16 .
  • FIG. 1 shows an example in which the single-phase bridge inverter circuit 20 includes, as switching elements, IGBTs and freewheeling diodes connected in anti-parallel to the IGBTs.
  • Single-phase bridge inverter circuit 20 is controlled by control circuit 17 . That is, the control circuit 17 controls the DC-DC converter 15 by driving the switching elements included in the single-phase bridge inverter circuit 20 .
  • the power supply circuit 19 supplies a DC voltage to the control circuit 6 .
  • the control circuit 6 controls the inverter circuit 5 by being supplied with a DC voltage from the power supply circuit 19 . If the DC voltage is not supplied from the power supply circuit 19 to the control circuit 6, the motor 12 will not be driven. In other words, the car 7 cannot be moved by the motor 12 unless a DC voltage is supplied from the power supply circuit 19 to the control circuit 6 .
  • the power supply circuit 19 supplies a DC voltage to the control circuit 17 .
  • the control circuit 17 controls the single-phase bridge inverter circuit 20 by being supplied with a DC voltage from the power supply circuit 19 . If no DC voltage is supplied from the power supply circuit 19 to the control circuit 17 , no current will flow through the brake coil 14 . In other words, if the DC voltage is not supplied from the power supply circuit 19 to the control circuit 17, the braking device 13 generates blocking force.
  • the elevator device is further equipped with an electrical safety device 23.
  • FIG. 3 is an enlarged view of the electrical safety device 23.
  • the electrical safety device 23 includes a power supply circuit 24, a safety chain circuit 25, a single-phase bridge inverter circuit 26, a control circuit 27, a contact circuit 28, a contact circuit 29, a single-phase diode bridge circuit 30, a monitoring circuit 31, and a monitoring circuit 32. Prepare.
  • the power supply circuit 24 converts the AC voltage from the AC power supply 1 into a DC voltage.
  • a safety chain circuit 25 is connected between the power supply circuit 24 and the single-phase bridge inverter circuit 26 .
  • a DC voltage converted by the power supply circuit 24 is supplied to the safety chain circuit 25 .
  • the safety chain circuit 25 includes multiple safety device contacts connected in series.
  • a safety device is a device for detecting a specific abnormality that requires power supply to the hoisting machine 10 to be stopped. Each safety device is provided with a safety contact. When a safety device detects a specific fault, the safety device contacts provided in the safety device open.
  • a speed governor that detects overspeed of the car 7 is an example of a safety device. For example, when the governor detects overspeed of the car 7, a safety contact provided to the governor opens.
  • the single-phase bridge inverter circuit 26 converts the DC voltage from the safety chain circuit 25 into AC voltage.
  • the single-phase bridge inverter circuit 26 converts to a square wave AC voltage.
  • FIG. 1 shows an example in which the single-phase bridge inverter circuit 26 includes, as switching elements, IGBTs and freewheeling diodes connected in anti-parallel to the IGBTs.
  • Single-phase bridge inverter circuit 26 is controlled by control circuit 27 . That is, the control circuit 27 controls switching elements included in the single-phase bridge inverter circuit 26 .
  • the contact circuit 28 is connected to one output 26 a on the AC side of the single-phase bridge inverter circuit 26 .
  • the contact circuit 29 is connected to the other output 26 b on the AC side of the single-phase bridge inverter circuit 26 .
  • the car 7 includes a car door 50 and a car door switch 51.
  • a car door 50 opens and closes an entrance formed in the car 7 .
  • the car door switch 51 is a switch for detecting that the car door 50 is in a specific fully closed position. When the car door 50 is in the fully closed position, the contact 51a of the car door switch 51 is closed. If the car door 50 is not in the fully closed position, the contact 51a of the car door switch 51 is open. For example, when the car door 50 moves from the fully closed position, the contact 51a opens.
  • a contact 51 a of the car door switch 51 is included in the contact circuit 28 .
  • a landing door 52 and a landing door switch 53 are provided at each landing where the car 7 stops.
  • the landing door 52 opens and closes an entrance formed in the landing.
  • the landing door switch 53 is a switch for detecting that the landing door 52 is in a specific fully closed position. When the landing door 52 is in the fully closed position, the contact 53a of the landing door switch 53 is closed. If the landing door 52 is not in the fully closed position, the contact 53a of the landing door switch 53 is opened. For example, when the landing door 52 on the first floor moves from the fully closed position, the contact 53a of the landing door switch 53 on the first floor opens.
  • a contact 53 a of the landing door switch 53 is included in the contact circuit 29 .
  • the contacts 53a included in the contact circuit 29 are connected in series. For example, if there are landings on each floor from the first floor to the tenth floor of a building, ten landing door switches 53 are provided in the elevator device. In this case, the contact circuit 29 has ten contacts 53a connected in series, that is, the contact 53a of the landing door switch 53 on the first floor, the contact 53a of the landing door switch 53 on the second floor, . landing door switch 53 contact 53a.
  • a single-phase diode bridge circuit 30 is connected between the contact circuit 28 and the contact circuit 29 .
  • the AC voltage from the single-phase bridge inverter circuit 26 is input to the single-phase diode bridge circuit 30 via the contact circuits 28 and 29 .
  • Single-phase diode bridge circuit 30 is an example of a single-phase rectifier circuit.
  • the single-phase diode bridge circuit 30 converts the input AC voltage into a DC voltage.
  • a DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 .
  • FIG. 1 shows an example in which a smoothing capacitor is connected to the DC side of the single-phase diode bridge circuit 30 .
  • the monitoring circuit 31 is connected between the single-phase diode bridge circuit 30 side of the contact circuit 28 and the output 26 b of the single-phase bridge inverter circuit 26 .
  • FIG. 1 shows an example in which the monitoring circuit 31 has a photocoupler as an element for detecting that the contact 51a of the car door switch 51 is short-circuited. That is, if the contact 51 a is short-circuited, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 31 . When the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler, the monitoring circuit 31 outputs a detection signal.
  • the monitoring circuit 32 is connected between the single-phase diode bridge circuit 30 side of the contact circuit 29 and the output 26 a of the single-phase bridge inverter circuit 26 .
  • FIG. 1 shows an example in which the monitoring circuit 32 includes a photocoupler as an element for detecting that all the contacts 53a included in the contact circuit 29 are short-circuited. That is, if all the contacts 53 a are short-circuited, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 32 . When the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler, the monitoring circuit 32 outputs a detection signal.
  • FIGS. 4 to 6 are diagrams for explaining the function of the electrical safety device 23.
  • FIG. 4 to 6 show examples in which the electrical safety device 23 further comprises a monitoring circuit 33.
  • FIG. A monitoring circuit 33 is connected to the DC side of the single-phase diode bridge circuit 30 .
  • the monitoring circuit 33 comprises a photocoupler. When the DC voltage from the single-phase diode bridge circuit 30 is supplied to the photocoupler, the monitoring circuit 33 outputs a detection signal.
  • FIG. 4 shows an example in which the contact 51a and all the contacts 53a included in the contact circuit 29 are closed.
  • the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the single-phase diode bridge circuit 30. Therefore, the DC voltage from the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 .
  • the power supply circuit 19 supplies DC voltage to the control circuit 6 and the control circuit 17 .
  • the DC voltage from the single-phase diode bridge circuit 30 is supplied to the photocoupler of the monitoring circuit 33. Therefore, a detection signal is output from the monitoring circuit 33 .
  • the contact 51 a since the contact 51 a is closed, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 31 . Therefore, a detection signal is output from the monitoring circuit 31 .
  • the contacts 53 a included in the contact circuit 29 are closed, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 32 . Therefore, a detection signal is output from the monitoring circuit 32 .
  • the car door 50 and the landing door 52 of a certain floor are open.
  • the contact of the landing door switch 53 for detecting that the open landing door 52 is in the fully closed position is referred to as "contact 53b" to distinguish it from other contacts 53a.
  • contact 53a represents a closed contact.
  • FIG. 5 shows an example in which the contact 51a itself of the car door switch 51 is open, but for some reason the contact 51a is short-circuited.
  • the contact 53b is open. Therefore, no voltage is generated on the DC side of the single-phase diode bridge circuit 30 . That is, no DC voltage is supplied from the single-phase diode bridge circuit 30 to the power supply circuit 19 . No detection signal is output from the monitoring circuit 33 .
  • FIG. 6 shows an example in which the contact 53b itself is open, but for some reason the contact 53b is short-circuited.
  • the contact 51a is open. Therefore, no voltage is generated on the DC side of the single-phase diode bridge circuit 30 . That is, no DC voltage is supplied from the single-phase diode bridge circuit 30 to the power supply circuit 19 . No detection signal is output from the monitoring circuit 33 .
  • the single-phase diode bridge circuit 30 receives input from the single-phase bridge inverter circuit 26 via the contact circuit 28 and the contact circuit 29 when the contact 51a and all the contacts 53a are closed. Converts AC voltage to DC voltage. Therefore, it is not necessary to equip the electrical safety device 23 with a relay relay. Moreover, since it is not necessary to connect the contact circuit 28 and the contact circuit 29 in series, the wiring can be simplified. In the example shown in this embodiment, the cost required for the electrical safety device 23 can be reduced.
  • the monitoring circuit 31 can monitor the opening and closing of the contact circuit 28 independently.
  • the monitoring circuit 32 can independently monitor the opening and closing of the contact circuit 29 . Therefore, for example, as shown in FIG. 5, it is possible to detect a short circuit of the contact 51a when the car door 50 and the landing door 52 of a certain floor are open. Further, as shown in FIG. 6, it is possible to detect a short circuit of the contact 53b when the car door 50 and the landing door 52 of a certain floor are open.
  • the DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 . Therefore, it is not necessary to provide a contactor to stop power supply to the hoisting machine 10 .
  • FIGS. 7 and 8 are diagrams showing other examples of the elevator device according to Embodiment 1. FIG. Only the differences from the examples shown in FIGS. 1 and 2 will be described in detail below.
  • FIG. 7 shows an example in which an IGBT is employed as the switching element 35, as in FIG. During regenerative operation of the motor 12 , the switching element 35 is turned on as necessary, and the power supplied to the bus 3 is consumed by the resistor 34 .
  • the control circuit 36 controls the switching element 35 .
  • a DC voltage from the power supply circuit 24 is supplied to the control circuit 36 .
  • FIG. 7 shows an example in which the DC voltage from the power supply circuit 24 is also supplied to the control circuit 18 and the control circuit 27 .
  • the power supply circuit 19 includes an upper arm power supply circuit 37 and a lower arm power supply circuit 38 .
  • the control circuit 6 includes a drive circuit 39 and a drive circuit 40 .
  • the control circuit 17 includes a drive circuit 41 and a drive circuit 42 .
  • FIG. 8 shows an example in which the inverter circuit 5 is realized by an IPM (Intelligence Power Module) for driving the motor 12.
  • IPM Intelligent Power Module
  • FIG. The drive circuit 39 is a gate drive circuit for driving switching elements included in the upper arm of the inverter circuit 5 .
  • the drive circuit 39 is connected to each gate driver connected to the switching element included in the upper arm of the inverter circuit 5 among the gate drivers (GD) included in the IPM.
  • GD gate drivers
  • the drive circuit 40 is a gate drive circuit for driving switching elements included in the lower arm of the inverter circuit 5 .
  • the drive circuit 40 is connected to a gate driver connected to a switching element included in the lower arm of the inverter circuit 5 among the gate drivers included in the IPM.
  • FIG. 8 shows an example in which the inverter function of the DC-DC converter 15 is realized by the power supply IPM for the brake device 13 .
  • the drive circuit 41 is a gate drive circuit for driving switching elements included in the upper arm of the single-phase bridge inverter circuit 20 .
  • the drive circuit 41 is connected to each gate driver connected to the switching element included in the upper arm of the single-phase bridge inverter circuit 20 among the gate drivers (GD) included in the IPM.
  • the drive circuit 42 is a gate drive circuit for driving switching elements included in the lower arm of the single-phase bridge inverter circuit 20 .
  • the drive circuit 42 is connected to the gate drivers included in the IPM and connected to the switching elements included in the lower arm of the single-phase bridge inverter circuit 20 .
  • a DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the upper arm power supply circuit 37 .
  • the upper arm power supply circuit 37 is a circuit for providing power necessary to drive the upper arm of the inverter circuit 5 and the upper arm of the single-phase bridge inverter circuit 20 .
  • the upper arm power supply circuit 37 supplies a DC voltage to the drive circuit 39 .
  • the upper arm power supply circuit 37 supplies a DC voltage to the drive circuit 41 .
  • a DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the lower arm power supply circuit 38 .
  • the lower arm power supply circuit 38 is a circuit for providing power necessary to drive the lower arm of the inverter circuit 5 and the lower arm of the single-phase bridge inverter circuit 20 .
  • the lower arm power supply circuit 38 supplies a DC voltage to the drive circuit 40 .
  • the lower arm power supply circuit 38 supplies a DC voltage to the drive circuit 42 .
  • the lower arm power supply circuit 38 is provided independently of the upper arm power supply circuit 37 . For example, no voltage is supplied from the upper arm power supply circuit 37 to the lower arm power supply circuit 38 . No voltage is supplied from the lower arm power supply circuit 38 to the upper arm power supply circuit 37 .
  • FIG. 8 shows an example in which the upper arm power supply circuit 37 includes a switching element and a transformer.
  • the transformer includes secondary coils corresponding to switching elements included in the upper arm of the inverter circuit 5 and the upper arm of the single-phase bridge inverter circuit 20, respectively.
  • the transformer of the upper arm power supply circuit 37 is provided with three secondary coils corresponding to the three switching elements included in the upper arm of the inverter circuit 5 .
  • the AC voltages induced in these three secondary coils are rectified and smoothed, respectively, and supplied to corresponding gate drive circuits in the drive circuit 39 .
  • the upper arm power supply circuit 37 is provided with two secondary coils corresponding to the two switching elements included in the upper arm of the single-phase bridge inverter circuit 20 .
  • the AC voltages induced in these two secondary coils are rectified and smoothed, respectively, and supplied to corresponding gate drive circuits in the drive circuit 41 .
  • FIG. 8 shows an example in which the lower arm power supply circuit 38 includes a switching element and a transformer.
  • the transformer includes a secondary coil corresponding to the lower arm of the inverter circuit 5 and a secondary coil corresponding to the lower arm of the single-phase bridge inverter circuit 20 .
  • the AC voltage induced in the secondary coil corresponding to the lower arm of the inverter circuit 5 is rectified and smoothed and supplied to the drive circuit 40 .
  • the drive circuit 40 includes three gate drive circuits corresponding to the three switching elements included in the lower arm of the inverter circuit 5 .
  • a DC voltage from the lower arm power supply circuit 38 is supplied to each of these three gate drive circuits in the drive circuit 40 .
  • the AC voltage induced in the secondary coil corresponding to the lower arm of the single-phase bridge inverter circuit 20 is rectified and smoothed and supplied to the drive circuit 42 .
  • the drive circuit 42 is provided with two gate drive circuits corresponding to the two switching elements included in the lower arm of the single-phase bridge inverter circuit 20 .
  • a DC voltage from the lower arm power supply circuit 38 is supplied to each of these two gate drive circuits in the drive circuit 42 .
  • both the inverter circuit 5 and the single-phase bridge inverter circuit 20 stop if voltage is not supplied from either the upper arm power supply circuit 37 or the lower arm power supply circuit 38 . That is, the motor 12 is stopped and the braking device 13 generates blocking force. Therefore, the safety of the elevator system can be enhanced.
  • the inverter circuit 5 and the single-phase bridge inverter circuit 20 share the upper arm power supply circuit 37 and the lower arm power supply circuit 38 . Therefore, the power supply circuit 19 can be simplified.
  • FIG. 9 is a diagram showing another example of the elevator device according to Embodiment 1.
  • FIG. 7 and 8 show an example in which the control circuit 18 is supplied with a DC voltage from the power supply circuit 24.
  • the control circuit 18 may be supplied with power based on the DC voltage from the single-phase diode bridge circuit 30 .
  • FIG. 9 shows an example in which the control circuit 18 is supplied with a DC voltage from the power supply circuit 19 .
  • the transformer of the lower arm power supply circuit 38 is further provided with a secondary coil corresponding to the control circuit 18 .
  • the AC voltage induced in the secondary coil is rectified and smoothed and supplied to the control circuit 18 .
  • the control circuit 18 includes a gate driver (GD) corresponding to the switching element included in the drive circuit 16 and a gate drive circuit.
  • a DC voltage from the lower arm power supply circuit 38 is supplied to the gate driving circuit.
  • the control circuit 18 if no voltage is supplied from the lower arm power supply circuit 38, the control circuit 18 also stops. Therefore, the timing at which the braking device 13 generates the blocking force can be further advanced. Thereby, the safety of the elevator system can be further enhanced.
  • the transformer of the upper arm power supply circuit 37 may be provided with a secondary coil corresponding to the control circuit 18 . That is, the control circuit 18 may be supplied with a DC voltage from the upper arm power supply circuit 37 .
  • the electrical safety device according to the present disclosure can be applied to all kinds of elevator devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)

Abstract

This electric safety device (23) comprises, e.g., a single-phase bridge inverter circuit (26), a contact circuit (28), a contact circuit (29), and a single-phase diode bridge circuit (30). The single-phase bridge inverter circuit (26) converts a DC voltage from a safety chain circuit (25) to an AC voltage. When a contact (51a) and a plurality of contacts (53a) are closed, the single-phase diode bridge circuit (30) converts the AC voltage inputted from the single-phase bridge inverter circuit (30) via the contact circuit (28) and the contact circuit (29) to a DC voltage.

Description

エレベーターの電気安全装置及びエレベーター装置Elevator electrical safety device and elevator device
　本開示は、エレベーターの電気安全装置とエレベーター装置とに関する。 The present disclosure relates to elevator electrical safety devices and elevator devices.
　特許文献１に、エレベーター装置が記載されている。特許文献１に記載されたエレベーター装置は、かご戸スイッチの接点と乗場戸スイッチの複数の接点とが直列に接続されたドアチェーン回路を備える。ドアチェーン回路が閉じていれば、中継リレーの接点が閉じられる。中継リレーの接点は、安全チェーン回路に含まれる。 Patent Document 1 describes an elevator device. The elevator device described in Patent Document 1 includes a door chain circuit in which a contact of a car door switch and a plurality of contacts of a landing door switch are connected in series. If the door chain circuit is closed, the relay contacts are closed. The relay relay contacts are included in the safety chain circuit.
日本特開平７－２４７２号公報Japanese Patent Laid-Open No. 7-2472
　エレベーター装置には、特定の異常が検出された際に巻上機への給電を停止するための電気安全装置が備えられる。特許文献１に記載されたドアチェーン回路及び安全チェーン回路を含む装置は、電気安全装置の一例である。 　Elevator equipment is equipped with an electrical safety device that stops power supply to the hoist when a specific abnormality is detected. A device including a door chain circuit and a safety chain circuit described in Patent Document 1 is an example of an electrical safety device.
　特許文献１に記載されたエレベーター装置では、電気安全装置を実現するために中継リレーが必要になる。また、かご戸スイッチの接点と乗場戸スイッチの接点とを直列に接続するため、配線が複雑になる。このため、電気安全装置に必要なコストが高くなるといった問題があった。 In the elevator device described in Patent Document 1, a relay relay is required to realize an electrical safety device. Moreover, since the contact of the car door switch and the contact of the landing door switch are connected in series, the wiring becomes complicated. Therefore, there is a problem that the cost required for the electrical safety device increases.
　本開示は、上述のような課題を解決するためになされた。本開示の目的は、コストを低減できるエレベーターの電気安全装置を提供することである。本開示の他の目的は、そのような電気安全装置を備えたエレベーター装置を提供することである。 The present disclosure was made to solve the problems described above. SUMMARY OF THE DISCLOSURE It is an object of the present disclosure to provide an elevator electrical safety device that can reduce costs. Another object of the present disclosure is to provide an elevator system with such an electrical safety device.
　本開示に係るエレベーターの電気安全装置は、直列に接続された複数の安全装置接点を含む安全チェーン回路からの直流電圧を交流電圧に変換する単相ブリッジインバータ回路と、かご戸スイッチの第１接点を含み、単相ブリッジインバータ回路の交流側の第１出力に接続された第１接点回路と、乗場戸スイッチの複数の第２接点を含み、複数の第２接点が直列に接続され、単相ブリッジインバータ回路の交流側の第２出力に接続された第２接点回路と、第１接点及び複数の第２接点が閉じられると、単相ブリッジインバータ回路から第１接点回路及び第２接点回路を介して入力される交流電圧を直流電圧に変換する単相整流回路と、を備える。 An elevator electrical safety device according to the present disclosure includes a single-phase bridge inverter circuit for converting DC voltage to AC voltage from a safety chain circuit including a plurality of safety device contacts connected in series, and a first contact of a car door switch. a first contact circuit connected to a first output on the AC side of the single-phase bridge inverter circuit; a plurality of second contacts of the landing door switch; When the second contact circuit connected to the second output on the AC side of the bridge inverter circuit, the first contact and the plurality of second contacts are closed, the first contact circuit and the second contact circuit are removed from the single-phase bridge inverter circuit. and a single-phase rectifier circuit for converting an AC voltage input through the DC voltage into a DC voltage.
　本開示に係るエレベーター装置は、上記電気安全装置と、交流電源からの交流電圧を直流電圧に変換するコンバータ回路と、コンバータ回路の直流側に接続された平滑コンデンサと、平滑コンデンサによって平滑化された直流電圧を交流電圧に変換し、巻上機のモータを駆動するインバータ回路と、を備える。 The elevator apparatus according to the present disclosure includes the above electrical safety device, a converter circuit that converts an AC voltage from an AC power supply to a DC voltage, a smoothing capacitor connected to the DC side of the converter circuit, and a an inverter circuit that converts a DC voltage into an AC voltage and drives the motor of the hoist.
　本開示によれば、エレベーターの電気安全装置に必要なコストを低減できる。 According to the present disclosure, the cost required for elevator electrical safety devices can be reduced.
実施の形態１におけるエレベーター装置の例を示す図である。1 is a diagram showing an example of an elevator device according to Embodiment 1; FIG. 実施の形態１におけるエレベーター装置の例を示す図である。1 is a diagram showing an example of an elevator device according to Embodiment 1; FIG. 電気安全装置を拡大して示す図である。It is a figure which expands and shows an electric safety device. 電気安全装置の機能を説明するための図である。It is a figure for demonstrating the function of an electrical safety device. 電気安全装置の機能を説明するための図である。It is a figure for demonstrating the function of an electrical safety device. 電気安全装置の機能を説明するための図である。It is a figure for demonstrating the function of an electrical safety device. 実施の形態１におけるエレベーター装置の他の例を示す図である。FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1; 実施の形態１におけるエレベーター装置の他の例を示す図である。FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1; 実施の形態１におけるエレベーター装置の他の例を示す図である。FIG. 5 is a diagram showing another example of the elevator device according to Embodiment 1;
　以下に、図面を参照して詳細な説明を行う。重複する説明は、適宜簡略化或いは省略する。各図において、同一の符号は同一の部分又は相当する部分を示す。 A detailed description is given below with reference to the drawings. Duplicate descriptions are appropriately simplified or omitted. In each figure, the same reference numerals denote the same or corresponding parts.
実施の形態１．
　図１及び図２は、実施の形態１におけるエレベーター装置の例を示す図である。エレベーター装置は、コンバータ回路２、母線３、平滑コンデンサ４、インバータ回路５、及び制御回路６を備える。 Embodiment 1.
1 and 2 are diagrams showing an example of an elevator device according to Embodiment 1. FIG. The elevator system includes a converter circuit 2, a bus 3, a smoothing capacitor 4, an inverter circuit 5, and a control circuit 6.
　コンバータ回路２は、メインブレーカを介して交流電源１に接続される。交流電源１は、例えば商用の三相交流電源である。コンバータ回路２は、交流電源１からの交流電圧を直流電圧に変換する。コンバータ回路２とインバータ回路５との間に母線３が接続される。コンバータ回路２からの直流電圧は、母線３に供給される。 The converter circuit 2 is connected to the AC power supply 1 via the main breaker. The AC power supply 1 is, for example, a commercial three-phase AC power supply. The converter circuit 2 converts the AC voltage from the AC power supply 1 into a DC voltage. Bus line 3 is connected between converter circuit 2 and inverter circuit 5 . A DC voltage from the converter circuit 2 is supplied to the bus 3 .
　コンバータ回路２の直流側、即ち母線３間に、平滑コンデンサ４が接続される。平滑コンデンサ４は、コンバータ回路２からの直流電圧を平滑化する。インバータ回路５は、平滑コンデンサ４によって平滑化された直流電圧を交流電圧に変換する。図１は、インバータ回路５が、スイッチング素子として、ＩＧＢＴ（Ｉｎｓｕｌａｔｅｄ　Ｇａｔｅ　Ｂｉｐｏｌａｒ　Ｔｒａｎｓｉｓｔｏｒ）と当該ＩＧＢＴに対して逆並列に接続された還流用のダイオードとを備える例を示す。インバータ回路５は、制御回路６によって制御される。即ち、制御回路６は、インバータ回路５に含まれるスイッチング素子を制御する。 A smoothing capacitor 4 is connected to the DC side of the converter circuit 2, that is, between the bus lines 3. Smoothing capacitor 4 smoothes the DC voltage from converter circuit 2 . The inverter circuit 5 converts the DC voltage smoothed by the smoothing capacitor 4 into an AC voltage. FIG. 1 shows an example in which the inverter circuit 5 includes an IGBT (Insulated Gate Bipolar Transistor) as a switching element and a freewheeling diode connected in anti-parallel to the IGBT. The inverter circuit 5 is controlled by the control circuit 6 . That is, the control circuit 6 controls switching elements included in the inverter circuit 5 .
　エレベーター装置は、かご７、つり合いおもり８、ロープ９、及び巻上機１０を更に備える。巻上機１０は、駆動綱車１１、モータ１２、及びブレーキ装置１３を備える。 The elevator device further comprises a car 7, a counterweight 8, a rope 9, and a hoist 10. The hoisting machine 10 comprises a drive sheave 11 , a motor 12 and a braking device 13 .
　かご７は、昇降路を上下に移動する。かご７及びつり合いおもり８は、ロープ９によって昇降路に吊り下げられる。つり合いおもり８は、かご７が移動する方向とは逆の方向に昇降路を上下に移動する。図２は、１：１ローピング方式のエレベーター装置を一例として示す。 Car 7 moves up and down the hoistway. The car 7 and counterweight 8 are suspended in the hoistway by ropes 9 . The counterweight 8 moves up and down the hoistway in a direction opposite to the direction in which the car 7 moves. FIG. 2 shows an example of a 1:1 roping elevator system.
　ロープ９は、駆動綱車１１に巻き掛けられる。モータ１２は、駆動綱車１１を回転させるための力を発生させる。駆動綱車１１が回転すると、駆動綱車１１の回転方向に応じた方向にかご７が移動する。即ち、モータ１２がインバータ回路５によって駆動されることにより、駆動綱車１１が回転し、かご７が移動する。ブレーキ装置１３は、ブレーキコイル１４を備える。ブレーキ装置１３は、駆動綱車１１が回転することを阻止するための力を発生させる。以下においては、当該力を阻止力ともいう。 The rope 9 is wound around the drive sheave 11. A motor 12 generates a force for rotating the drive sheave 11 . When the drive sheave 11 rotates, the car 7 moves in a direction corresponding to the direction of rotation of the drive sheave 11 . That is, when the motor 12 is driven by the inverter circuit 5, the drive sheave 11 rotates and the car 7 moves. The brake device 13 has a brake coil 14 . The brake device 13 generates a force to prevent the drive sheave 11 from rotating. In the following, this force is also referred to as blocking force.
　エレベーター装置は、ＤＣ－ＤＣコンバータ１５、駆動回路１６、制御回路１７、制御回路１８、及び電源回路１９を更に備える。ＤＣ－ＤＣコンバータ１５は、単相ブリッジインバータ回路２０、絶縁トランス２１、及び単相ダイオードブリッジ回路２２を備える。 The elevator device further comprises a DC-DC converter 15, a drive circuit 16, a control circuit 17, a control circuit 18, and a power supply circuit 19. The DC-DC converter 15 includes a single-phase bridge inverter circuit 20 , an isolation transformer 21 and a single-phase diode bridge circuit 22 .
　駆動回路１６は、ブレーキ装置１３を駆動するための回路である。ブレーキコイル１４に電流が流れていなければ、ブレーキ装置１３は阻止力を発生させる。ブレーキコイル１４に電流が流れると、当該阻止力は消失する。図１は、駆動回路１６が、スイッチング素子として、ＭＯＳＦＥＴ（Ｍｅｔａｌ－Ｏｘｉｄｅ－Ｓｅｍｉｃｏｎｄｕｃｔｏｒ　Ｆｉｅｌｄ　Ｅｆｆｅｃｔ　Ｔｒａｎｓｉｓｔｏｒ）を備える例を示す。駆動回路１６は、制御回路１８によって制御される。即ち、制御回路１８は、駆動回路１６に含まれるスイッチング素子を制御する。 The drive circuit 16 is a circuit for driving the brake device 13. If the brake coil 14 is not energized, the braking device 13 produces a blocking force. When current flows through the brake coil 14, the blocking force disappears. FIG. 1 shows an example in which the drive circuit 16 includes a MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) as a switching element. Drive circuit 16 is controlled by control circuit 18 . That is, the control circuit 18 controls switching elements included in the drive circuit 16 .
　単相ブリッジインバータ回路２０は、絶縁トランス２１の一次側コイルに接続される。単相ブリッジインバータ回路２０は、母線３からの直流電圧を交流電圧に変換する。単相ブリッジインバータ回路２０によって変換された交流電圧は、絶縁トランス２１の一次側コイルに供給される。 The single-phase bridge inverter circuit 20 is connected to the primary side coil of the isolation transformer 21 . The single-phase bridge inverter circuit 20 converts the DC voltage from the bus 3 into AC voltage. The AC voltage converted by the single-phase bridge inverter circuit 20 is supplied to the primary coil of the isolation transformer 21 .
　単相ダイオードブリッジ回路２２は、絶縁トランス２１の二次側コイルに接続される。単相ダイオードブリッジ回路２２は、絶縁トランス２１の二次側コイルに誘導された交流電圧を直流電圧に変換する。単相ダイオードブリッジ回路２２によって変換された直流電圧は、駆動回路１６に供給される。即ち、ＤＣ－ＤＣコンバータ１５は、駆動回路１６に対して直流電圧を供給する。ＤＣ－ＤＣコンバータ１５は、駆動回路１６に対する電源回路として機能する。 The single-phase diode bridge circuit 22 is connected to the secondary side coil of the isolation transformer 21 . The single-phase diode bridge circuit 22 converts AC voltage induced in the secondary coil of the insulating transformer 21 into DC voltage. A DC voltage converted by the single-phase diode bridge circuit 22 is supplied to the drive circuit 16 . That is, the DC-DC converter 15 supplies a DC voltage to the drive circuit 16 . The DC-DC converter 15 functions as a power supply circuit for the drive circuit 16 .
　図１は、単相ブリッジインバータ回路２０が、スイッチング素子として、ＩＧＢＴと当該ＩＧＢＴに対して逆並列に接続された還流用のダイオードとを備える例を示す。単相ブリッジインバータ回路２０は、制御回路１７によって制御される。即ち、制御回路１７は、単相ブリッジインバータ回路２０に含まれるスイッチング素子を駆動することにより、ＤＣ－ＤＣコンバータ１５を制御する。 FIG. 1 shows an example in which the single-phase bridge inverter circuit 20 includes, as switching elements, IGBTs and freewheeling diodes connected in anti-parallel to the IGBTs. Single-phase bridge inverter circuit 20 is controlled by control circuit 17 . That is, the control circuit 17 controls the DC-DC converter 15 by driving the switching elements included in the single-phase bridge inverter circuit 20 .
　電源回路１９は、制御回路６に直流電圧を供給する。制御回路６は、電源回路１９から直流電圧が供給されることにより、インバータ回路５を制御する。電源回路１９から制御回路６に直流電圧が供給されなければ、モータ１２は駆動しない。即ち、電源回路１９から制御回路６に直流電圧が供給されなければ、モータ１２によってかご７を移動させることはできない。 The power supply circuit 19 supplies a DC voltage to the control circuit 6 . The control circuit 6 controls the inverter circuit 5 by being supplied with a DC voltage from the power supply circuit 19 . If the DC voltage is not supplied from the power supply circuit 19 to the control circuit 6, the motor 12 will not be driven. In other words, the car 7 cannot be moved by the motor 12 unless a DC voltage is supplied from the power supply circuit 19 to the control circuit 6 .
　また、電源回路１９は、制御回路１７に直流電圧を供給する。制御回路１７は、電源回路１９から直流電圧が供給されることにより、単相ブリッジインバータ回路２０を制御する。電源回路１９から制御回路１７に直流電圧が供給されなければ、ブレーキコイル１４に電流は流れない。即ち、電源回路１９から制御回路１７に直流電圧が供給されなければ、ブレーキ装置１３は阻止力を発生させる。 Also, the power supply circuit 19 supplies a DC voltage to the control circuit 17 . The control circuit 17 controls the single-phase bridge inverter circuit 20 by being supplied with a DC voltage from the power supply circuit 19 . If no DC voltage is supplied from the power supply circuit 19 to the control circuit 17 , no current will flow through the brake coil 14 . In other words, if the DC voltage is not supplied from the power supply circuit 19 to the control circuit 17, the braking device 13 generates blocking force.
　エレベーター装置は、電気安全装置２３を更に備える。図３は、電気安全装置２３を拡大して示す図である。電気安全装置２３は、電源回路２４、安全チェーン回路２５、単相ブリッジインバータ回路２６、制御回路２７、接点回路２８、接点回路２９、単相ダイオードブリッジ回路３０、監視回路３１、及び監視回路３２を備える。 The elevator device is further equipped with an electrical safety device 23. FIG. 3 is an enlarged view of the electrical safety device 23. As shown in FIG. The electrical safety device 23 includes a power supply circuit 24, a safety chain circuit 25, a single-phase bridge inverter circuit 26, a control circuit 27, a contact circuit 28, a contact circuit 29, a single-phase diode bridge circuit 30, a monitoring circuit 31, and a monitoring circuit 32. Prepare.
　電源回路２４は、交流電源１からの交流電圧を直流電圧に変換する。電源回路２４と単相ブリッジインバータ回路２６との間に安全チェーン回路２５が接続される。電源回路２４によって変換された直流電圧は、安全チェーン回路２５に供給される。 The power supply circuit 24 converts the AC voltage from the AC power supply 1 into a DC voltage. A safety chain circuit 25 is connected between the power supply circuit 24 and the single-phase bridge inverter circuit 26 . A DC voltage converted by the power supply circuit 24 is supplied to the safety chain circuit 25 .
　安全チェーン回路２５には、直列に接続された複数の安全装置接点が含まれる。安全装置は、巻上機１０への給電を停止する必要がある特定の異常を検出するための装置である。各安全装置に安全装置接点が備えられる。安全装置が特定の異常を検出すると、その安全装置に備えられた安全装置接点が開放する。かご７の過速度を検出する調速機は、安全装置の一例である。例えば、調速機がかご７の過速度を検出すると、調速機に備えられた安全装置接点が開放する。 The safety chain circuit 25 includes multiple safety device contacts connected in series. A safety device is a device for detecting a specific abnormality that requires power supply to the hoisting machine 10 to be stopped. Each safety device is provided with a safety contact. When a safety device detects a specific fault, the safety device contacts provided in the safety device open. A speed governor that detects overspeed of the car 7 is an example of a safety device. For example, when the governor detects overspeed of the car 7, a safety contact provided to the governor opens.
　単相ブリッジインバータ回路２６は、安全チェーン回路２５からの直流電圧を交流電圧に変換する。例えば、単相ブリッジインバータ回路２６は、方形波の交流電圧に変換する。図１は、単相ブリッジインバータ回路２６が、スイッチング素子として、ＩＧＢＴと当該ＩＧＢＴに対して逆並列に接続された還流用のダイオードとを備える例を示す。単相ブリッジインバータ回路２６は、制御回路２７によって制御される。即ち、制御回路２７は、単相ブリッジインバータ回路２６に含まれるスイッチング素子を制御する。 The single-phase bridge inverter circuit 26 converts the DC voltage from the safety chain circuit 25 into AC voltage. For example, the single-phase bridge inverter circuit 26 converts to a square wave AC voltage. FIG. 1 shows an example in which the single-phase bridge inverter circuit 26 includes, as switching elements, IGBTs and freewheeling diodes connected in anti-parallel to the IGBTs. Single-phase bridge inverter circuit 26 is controlled by control circuit 27 . That is, the control circuit 27 controls switching elements included in the single-phase bridge inverter circuit 26 .
　接点回路２８は、単相ブリッジインバータ回路２６の交流側の一方の出力２６ａに接続される。接点回路２９は、単相ブリッジインバータ回路２６の交流側のもう一方の出力２６ｂに接続される。 The contact circuit 28 is connected to one output 26 a on the AC side of the single-phase bridge inverter circuit 26 . The contact circuit 29 is connected to the other output 26 b on the AC side of the single-phase bridge inverter circuit 26 .
　図２に示すように、かご７は、かご戸５０、及びかご戸スイッチ５１を備える。かご戸５０は、かご７に形成された出入口を開閉する。かご戸スイッチ５１は、かご戸５０が特定の全閉位置にあることを検出するためのスイッチである。かご戸５０が全閉位置にあれば、かご戸スイッチ５１の接点５１ａは閉じている。かご戸５０が全閉位置になければ、かご戸スイッチ５１の接点５１ａは開放する。例えば、かご戸５０が全閉位置から移動すると、接点５１ａは開放する。かご戸スイッチ５１の接点５１ａは、接点回路２８に含まれる。 As shown in FIG. 2, the car 7 includes a car door 50 and a car door switch 51. A car door 50 opens and closes an entrance formed in the car 7 . The car door switch 51 is a switch for detecting that the car door 50 is in a specific fully closed position. When the car door 50 is in the fully closed position, the contact 51a of the car door switch 51 is closed. If the car door 50 is not in the fully closed position, the contact 51a of the car door switch 51 is open. For example, when the car door 50 moves from the fully closed position, the contact 51a opens. A contact 51 a of the car door switch 51 is included in the contact circuit 28 .
　かご７が停止する各乗場に、乗場戸５２、及び乗場戸スイッチ５３が設けられる。乗場戸５２は、乗場に形成された出入口を開閉する。乗場戸スイッチ５３は、乗場戸５２が特定の全閉位置にあることを検出するためのスイッチである。乗場戸５２が全閉位置にあれば、乗場戸スイッチ５３の接点５３ａは閉じている。乗場戸５２が全閉位置になければ、乗場戸スイッチ５３の接点５３ａは開放する。例えば、１階の乗場戸５２が全閉位置から移動すると、１階の乗場戸スイッチ５３の接点５３ａは開放する。 A landing door 52 and a landing door switch 53 are provided at each landing where the car 7 stops. The landing door 52 opens and closes an entrance formed in the landing. The landing door switch 53 is a switch for detecting that the landing door 52 is in a specific fully closed position. When the landing door 52 is in the fully closed position, the contact 53a of the landing door switch 53 is closed. If the landing door 52 is not in the fully closed position, the contact 53a of the landing door switch 53 is opened. For example, when the landing door 52 on the first floor moves from the fully closed position, the contact 53a of the landing door switch 53 on the first floor opens.
　乗場戸スイッチ５３の接点５３ａは、接点回路２９に含まれる。接点回路２９に含まれる接点５３ａは、直列に接続される。例えば、建物の１階から１０階の各階に乗場があれば、エレベーター装置には１０個の乗場戸スイッチ５３が備えられる。かかる場合、接点回路２９には、直列に接続された１０個の接点５３ａ、即ち１階の乗場戸スイッチ５３の接点５３ａ、２階の乗場戸スイッチ５３の接点５３ａ、・・・、及び１０階の乗場戸スイッチ５３の接点５３ａが含まれる。 A contact 53 a of the landing door switch 53 is included in the contact circuit 29 . The contacts 53a included in the contact circuit 29 are connected in series. For example, if there are landings on each floor from the first floor to the tenth floor of a building, ten landing door switches 53 are provided in the elevator device. In this case, the contact circuit 29 has ten contacts 53a connected in series, that is, the contact 53a of the landing door switch 53 on the first floor, the contact 53a of the landing door switch 53 on the second floor, . landing door switch 53 contact 53a.
　単相ダイオードブリッジ回路３０は、接点回路２８と接点回路２９との間に接続される。接点５１ａと全ての接点５３ａとが閉じられると、単相ブリッジインバータ回路２６からの交流電圧が接点回路２８及び接点回路２９を介して単相ダイオードブリッジ回路３０に入力される。単相ダイオードブリッジ回路３０は、単相整流回路の一例である。単相ダイオードブリッジ回路３０は、入力された交流電圧を直流電圧に変換する。単相ダイオードブリッジ回路３０によって変換された直流電圧は、電源回路１９に供給される。なお、図１は、単相ダイオードブリッジ回路３０の直流側に平滑コンデンサが接続される例を示す。 A single-phase diode bridge circuit 30 is connected between the contact circuit 28 and the contact circuit 29 . When the contacts 51 a and all the contacts 53 a are closed, the AC voltage from the single-phase bridge inverter circuit 26 is input to the single-phase diode bridge circuit 30 via the contact circuits 28 and 29 . Single-phase diode bridge circuit 30 is an example of a single-phase rectifier circuit. The single-phase diode bridge circuit 30 converts the input AC voltage into a DC voltage. A DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 . Note that FIG. 1 shows an example in which a smoothing capacitor is connected to the DC side of the single-phase diode bridge circuit 30 .
　監視回路３１は、接点回路２８の単相ダイオードブリッジ回路３０側と単相ブリッジインバータ回路２６の出力２６ｂとの間に接続される。図１は、監視回路３１が、かご戸スイッチ５１の接点５１ａが短絡していることを検出するための素子として、フォトカプラを備える例を示す。即ち、接点５１ａが短絡していれば、単相ブリッジインバータ回路２６からの交流電圧が監視回路３１のフォトカプラに供給される。単相ブリッジインバータ回路２６からの交流電圧が当該フォトカプラに供給されると、監視回路３１から検出信号が出力される。 The monitoring circuit 31 is connected between the single-phase diode bridge circuit 30 side of the contact circuit 28 and the output 26 b of the single-phase bridge inverter circuit 26 . FIG. 1 shows an example in which the monitoring circuit 31 has a photocoupler as an element for detecting that the contact 51a of the car door switch 51 is short-circuited. That is, if the contact 51 a is short-circuited, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 31 . When the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler, the monitoring circuit 31 outputs a detection signal.
　監視回路３２は、接点回路２９の単相ダイオードブリッジ回路３０側と単相ブリッジインバータ回路２６の出力２６ａとの間に接続される。図１は、監視回路３２が、接点回路２９に含まれる全ての接点５３ａが短絡していることを検出するための素子として、フォトカプラを備える例を示す。即ち、全ての接点５３ａが短絡していれば、単相ブリッジインバータ回路２６からの交流電圧が監視回路３２のフォトカプラに供給される。単相ブリッジインバータ回路２６からの交流電圧が当該フォトカプラに供給されると、監視回路３２から検出信号が出力される。 The monitoring circuit 32 is connected between the single-phase diode bridge circuit 30 side of the contact circuit 29 and the output 26 a of the single-phase bridge inverter circuit 26 . FIG. 1 shows an example in which the monitoring circuit 32 includes a photocoupler as an element for detecting that all the contacts 53a included in the contact circuit 29 are short-circuited. That is, if all the contacts 53 a are short-circuited, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 32 . When the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler, the monitoring circuit 32 outputs a detection signal.
　図４から図６は、電気安全装置２３の機能を説明するための図である。図４から図６は、電気安全装置２３が監視回路３３を更に備える例を示す。監視回路３３は、単相ダイオードブリッジ回路３０の直流側に接続される。図４から図６に示す例では、監視回路３３はフォトカプラを備える。単相ダイオードブリッジ回路３０からの直流電圧が当該フォトカプラに供給されると、監視回路３３から検出信号が出力される。 4 to 6 are diagrams for explaining the function of the electrical safety device 23. FIG. 4 to 6 show examples in which the electrical safety device 23 further comprises a monitoring circuit 33. FIG. A monitoring circuit 33 is connected to the DC side of the single-phase diode bridge circuit 30 . In the examples shown in FIGS. 4-6, the monitoring circuit 33 comprises a photocoupler. When the DC voltage from the single-phase diode bridge circuit 30 is supplied to the photocoupler, the monitoring circuit 33 outputs a detection signal.
　図４に示す例では、かご戸５０と全ての乗場戸５２とが閉じられている。即ち、図４は、接点５１ａと接点回路２９に含まれる全ての接点５３ａとが閉じている例を示す。 In the example shown in FIG. 4, the car door 50 and all the landing doors 52 are closed. That is, FIG. 4 shows an example in which the contact 51a and all the contacts 53a included in the contact circuit 29 are closed.
　図４に示す例では、単相ブリッジインバータ回路２６からの交流電圧が単相ダイオードブリッジ回路３０に供給される。このため、単相ダイオードブリッジ回路３０からの直流電圧が電源回路１９に供給される。電源回路１９は、制御回路６及び制御回路１７に直流電圧を供給する。 In the example shown in FIG. 4, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the single-phase diode bridge circuit 30. Therefore, the DC voltage from the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 . The power supply circuit 19 supplies DC voltage to the control circuit 6 and the control circuit 17 .
　図４に示す例では、単相ダイオードブリッジ回路３０からの直流電圧が監視回路３３のフォトカプラに供給される。このため、監視回路３３から検出信号が出力される。 In the example shown in FIG. 4, the DC voltage from the single-phase diode bridge circuit 30 is supplied to the photocoupler of the monitoring circuit 33. Therefore, a detection signal is output from the monitoring circuit 33 .
　また、接点５１ａが閉じられているため、単相ブリッジインバータ回路２６からの交流電圧が監視回路３１のフォトカプラに供給される。このため、監視回路３１から検出信号が出力される。同様に、接点回路２９に含まれる全ての接点５３ａが閉じられているため、単相ブリッジインバータ回路２６からの交流電圧が監視回路３２のフォトカプラに供給される。このため、監視回路３２から検出信号が出力される。 Also, since the contact 51 a is closed, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 31 . Therefore, a detection signal is output from the monitoring circuit 31 . Similarly, since all the contacts 53 a included in the contact circuit 29 are closed, the AC voltage from the single-phase bridge inverter circuit 26 is supplied to the photocoupler of the monitoring circuit 32 . Therefore, a detection signal is output from the monitoring circuit 32 .
　図５及び図６に示す例では、かご戸５０とある階の乗場戸５２とが開いている。図５及び図６に関する説明では、開いている乗場戸５２が全閉位置にあることを検出するための乗場戸スイッチ５３の接点を「接点５３ｂ」と表記し、他の接点５３ａと区別する。即ち、図５及び図６では、接点５３ａは閉じている接点を表す。 In the examples shown in FIGS. 5 and 6, the car door 50 and the landing door 52 of a certain floor are open. 5 and 6, the contact of the landing door switch 53 for detecting that the open landing door 52 is in the fully closed position is referred to as "contact 53b" to distinguish it from other contacts 53a. 5 and 6, contact 53a represents a closed contact.
　図５は、かご戸スイッチ５１の接点５１ａ自体は開放しているが、何らかの理由によって接点５１ａが短絡している例を示す。図５示す例では、接点５３ｂは開放している。このため、単相ダイオードブリッジ回路３０の直流側に電圧は発生しない。即ち、単相ダイオードブリッジ回路３０から電源回路１９に対して直流電圧は供給されない。監視回路３３から検出信号は出力されない。 FIG. 5 shows an example in which the contact 51a itself of the car door switch 51 is open, but for some reason the contact 51a is short-circuited. In the example shown in FIG. 5, the contact 53b is open. Therefore, no voltage is generated on the DC side of the single-phase diode bridge circuit 30 . That is, no DC voltage is supplied from the single-phase diode bridge circuit 30 to the power supply circuit 19 . No detection signal is output from the monitoring circuit 33 .
　一方、かご戸スイッチ５１の接点５１ａが短絡しているため、監視回路３１には電圧が発生する。このため、監視回路３１から検出信号が出力される。また、接点５３ｂは開放しているため、監視回路３２に電圧は発生しない。このため、監視回路３２から検出信号は出力されない。 On the other hand, since the contact 51a of the car door switch 51 is short-circuited, a voltage is generated in the monitoring circuit 31. Therefore, a detection signal is output from the monitoring circuit 31 . Also, since the contact 53b is open, no voltage is generated in the monitoring circuit 32. FIG. Therefore, the detection signal is not output from the monitoring circuit 32 .
　図６は、接点５３ｂ自体は開放しているが、何らかの理由によって接点５３ｂが短絡している例を示す。図６示す例では、接点５１ａは開放している。このため、単相ダイオードブリッジ回路３０の直流側に電圧は発生しない。即ち、単相ダイオードブリッジ回路３０から電源回路１９に対して直流電圧は供給されない。監視回路３３から検出信号は出力されない。 FIG. 6 shows an example in which the contact 53b itself is open, but for some reason the contact 53b is short-circuited. In the example shown in FIG. 6, the contact 51a is open. Therefore, no voltage is generated on the DC side of the single-phase diode bridge circuit 30 . That is, no DC voltage is supplied from the single-phase diode bridge circuit 30 to the power supply circuit 19 . No detection signal is output from the monitoring circuit 33 .
　一方、接点５３ｂが短絡しているため、監視回路３２には電圧が発生する。このため、監視回路３２から検出信号が出力される。また、接点５１ａは開放しているため、監視回路３１に電圧は発生しない。このため、監視回路３１から検出信号は出力されない。 On the other hand, since the contact 53b is short-circuited, a voltage is generated in the monitoring circuit 32. Therefore, a detection signal is output from the monitoring circuit 32 . Also, since the contact 51a is open, no voltage is generated in the monitoring circuit 31. FIG. Therefore, the detection signal is not output from the monitoring circuit 31 .
　なお、図６に示す例において接点５３ｂが短絡していなければ、単相ダイオードブリッジ回路３０の直流側に電圧は発生しない。監視回路３１に電圧は発生しない。監視回路３２に電圧は発生しない。このため、監視回路３１～３３の何れの回路からも検出信号は出力されない。 In the example shown in FIG. 6, no voltage is generated on the DC side of the single-phase diode bridge circuit 30 if the contact 53b is not short-circuited. No voltage is generated in the monitoring circuit 31 . No voltage is generated in the monitoring circuit 32 . Therefore, no detection signal is output from any of the monitoring circuits 31-33.
　本実施の形態に示す例では、単相ダイオードブリッジ回路３０は、接点５１ａと全ての接点５３ａとが閉じられると、単相ブリッジインバータ回路２６から接点回路２８及び接点回路２９を介して入力される交流電圧を直流電圧に変換する。このため、電気安全装置２３に中継リレーを備える必要がない。また、接点回路２８と接点回路２９とを直列で接続する必要がないため、配線を簡素化できる。本実施の形態に示す例であれば、電気安全装置２３に必要なコストを低減できる。 In the example shown in this embodiment, the single-phase diode bridge circuit 30 receives input from the single-phase bridge inverter circuit 26 via the contact circuit 28 and the contact circuit 29 when the contact 51a and all the contacts 53a are closed. Converts AC voltage to DC voltage. Therefore, it is not necessary to equip the electrical safety device 23 with a relay relay. Moreover, since it is not necessary to connect the contact circuit 28 and the contact circuit 29 in series, the wiring can be simplified. In the example shown in this embodiment, the cost required for the electrical safety device 23 can be reduced.
　本実施の形態に示す例では、監視回路３１によって接点回路２８の開閉を独立に監視できる。監視回路３２によって接点回路２９の開閉を独立に監視できる。このため、例えば、図５に示すように、かご戸５０とある階の乗場戸５２とが開いている時の接点５１ａの短絡を検出することが可能である。また、図６に示すように、かご戸５０とある階の乗場戸５２とが開いている時の接点５３ｂの短絡を検出することが可能である。 In the example shown in the present embodiment, the monitoring circuit 31 can monitor the opening and closing of the contact circuit 28 independently. The monitoring circuit 32 can independently monitor the opening and closing of the contact circuit 29 . Therefore, for example, as shown in FIG. 5, it is possible to detect a short circuit of the contact 51a when the car door 50 and the landing door 52 of a certain floor are open. Further, as shown in FIG. 6, it is possible to detect a short circuit of the contact 53b when the car door 50 and the landing door 52 of a certain floor are open.
　本実施の形態に示す例では、単相ダイオードブリッジ回路３０によって変換された直流電圧が電源回路１９に供給される。このため、巻上機１０への給電を停止するために、コンタクタを備える必要がない。 In the example shown in this embodiment, the DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the power supply circuit 19 . Therefore, it is not necessary to provide a contactor to stop power supply to the hoisting machine 10 .
　図７及び図８は、実施の形態１におけるエレベーター装置の他の例を示す図である。以下においては、図１及び図２に示す例と相違する点についてのみ詳しく説明する。 7 and 8 are diagrams showing other examples of the elevator device according to Embodiment 1. FIG. Only the differences from the examples shown in FIGS. 1 and 2 will be described in detail below.
　エレベーター装置では、母線３間に、抵抗３４、及びスイッチング素子３５が直列に接続される。図７は、図１と同様に、スイッチング素子３５として、ＩＧＢＴが採用される例を示す。モータ１２の回生運転時に、必要に応じてスイッチング素子３５がオンになり、母線３に供給される電力が抵抗３４によって消費される。 In the elevator device, a resistor 34 and a switching element 35 are connected in series between the busbars 3. FIG. 7 shows an example in which an IGBT is employed as the switching element 35, as in FIG. During regenerative operation of the motor 12 , the switching element 35 is turned on as necessary, and the power supplied to the bus 3 is consumed by the resistor 34 .
　制御回路３６は、スイッチング素子３５を制御する。図７に示す例では、電源回路２４からの直流電圧が制御回路３６に供給される。図７は、電源回路２４からの直流電圧が制御回路１８及び制御回路２７にも供給される例を示す。 The control circuit 36 controls the switching element 35 . In the example shown in FIG. 7, a DC voltage from the power supply circuit 24 is supplied to the control circuit 36 . FIG. 7 shows an example in which the DC voltage from the power supply circuit 24 is also supplied to the control circuit 18 and the control circuit 27 .
　図７及び図８に示す例では、電源回路１９は、上アーム用電源回路３７、及び下アーム用電源回路３８を備える。制御回路６は、駆動回路３９、及び駆動回路４０を備える。制御回路１７は、駆動回路４１、及び駆動回路４２を備える。 In the examples shown in FIGS. 7 and 8, the power supply circuit 19 includes an upper arm power supply circuit 37 and a lower arm power supply circuit 38 . The control circuit 6 includes a drive circuit 39 and a drive circuit 40 . The control circuit 17 includes a drive circuit 41 and a drive circuit 42 .
　図８は、インバータ回路５がモータ１２を駆動するためのＩＰＭ（Ｉｎｔｅｌｌｉｇｅｎｃｅ　Ｐｏｗｅｒ　Ｍｏｄｕｌｅ）で実現される例を示す。駆動回路３９は、インバータ回路５の上アームに含まれるスイッチング素子を駆動するためのゲート駆動回路である。駆動回路３９は、当該ＩＰＭに含まれるゲートドライバ（ＧＤ）のうち、インバータ回路５の上アームに含まれるスイッチング素子に接続された各ゲートドライバに接続される。 FIG. 8 shows an example in which the inverter circuit 5 is realized by an IPM (Intelligence Power Module) for driving the motor 12. FIG. The drive circuit 39 is a gate drive circuit for driving switching elements included in the upper arm of the inverter circuit 5 . The drive circuit 39 is connected to each gate driver connected to the switching element included in the upper arm of the inverter circuit 5 among the gate drivers (GD) included in the IPM.
　駆動回路４０は、インバータ回路５の下アームに含まれるスイッチング素子を駆動するためのゲート駆動回路である。駆動回路４０は、当該ＩＰＭに含まれるゲートドライバのうち、インバータ回路５の下アームに含まれるスイッチング素子に接続されたゲートドライバに接続される。 The drive circuit 40 is a gate drive circuit for driving switching elements included in the lower arm of the inverter circuit 5 . The drive circuit 40 is connected to a gate driver connected to a switching element included in the lower arm of the inverter circuit 5 among the gate drivers included in the IPM.
　また、図８は、ＤＣ－ＤＣコンバータ１５のインバータ機能がブレーキ装置１３に対する電源用のＩＰＭで実現される例を示す。駆動回路４１は、単相ブリッジインバータ回路２０の上アームに含まれるスイッチング素子を駆動するためのゲート駆動回路である。駆動回路４１は、当該ＩＰＭに含まれるゲートドライバ（ＧＤ）のうち、単相ブリッジインバータ回路２０の上アームに含まれるスイッチング素子に接続された各ゲートドライバに接続される。 Also, FIG. 8 shows an example in which the inverter function of the DC-DC converter 15 is realized by the power supply IPM for the brake device 13 . The drive circuit 41 is a gate drive circuit for driving switching elements included in the upper arm of the single-phase bridge inverter circuit 20 . The drive circuit 41 is connected to each gate driver connected to the switching element included in the upper arm of the single-phase bridge inverter circuit 20 among the gate drivers (GD) included in the IPM.
　駆動回路４２は、単相ブリッジインバータ回路２０の下アームに含まれるスイッチング素子を駆動するためのゲート駆動回路である。駆動回路４２は、当該ＩＰＭに含まれるゲートドライバのうち、単相ブリッジインバータ回路２０の下アームに含まれるスイッチング素子に接続されたゲートドライバに接続される。 The drive circuit 42 is a gate drive circuit for driving switching elements included in the lower arm of the single-phase bridge inverter circuit 20 . The drive circuit 42 is connected to the gate drivers included in the IPM and connected to the switching elements included in the lower arm of the single-phase bridge inverter circuit 20 .
　上アーム用電源回路３７には、単相ダイオードブリッジ回路３０によって変換された直流電圧が供給される。上アーム用電源回路３７は、インバータ回路５の上アーム及び単相ブリッジインバータ回路２０の上アームを駆動するために必要な電源を提供するための回路である。上アーム用電源回路３７は、駆動回路３９に直流電圧を供給する。また、上アーム用電源回路３７は、駆動回路４１に直流電圧を供給する。 A DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the upper arm power supply circuit 37 . The upper arm power supply circuit 37 is a circuit for providing power necessary to drive the upper arm of the inverter circuit 5 and the upper arm of the single-phase bridge inverter circuit 20 . The upper arm power supply circuit 37 supplies a DC voltage to the drive circuit 39 . Also, the upper arm power supply circuit 37 supplies a DC voltage to the drive circuit 41 .
　下アーム用電源回路３８には、単相ダイオードブリッジ回路３０によって変換された直流電圧が供給される。下アーム用電源回路３８は、インバータ回路５の下アーム及び単相ブリッジインバータ回路２０の下アームを駆動するために必要な電源を提供するための回路である。下アーム用電源回路３８は、駆動回路４０に直流電圧を供給する。また、下アーム用電源回路３８は、駆動回路４２に直流電圧を供給する。下アーム用電源回路３８は、上アーム用電源回路３７とは独立して設けられる。例えば、上アーム用電源回路３７から下アーム用電源回路３８に電圧は供給されない。下アーム用電源回路３８から上アーム用電源回路３７に電圧は供給されない。 A DC voltage converted by the single-phase diode bridge circuit 30 is supplied to the lower arm power supply circuit 38 . The lower arm power supply circuit 38 is a circuit for providing power necessary to drive the lower arm of the inverter circuit 5 and the lower arm of the single-phase bridge inverter circuit 20 . The lower arm power supply circuit 38 supplies a DC voltage to the drive circuit 40 . Also, the lower arm power supply circuit 38 supplies a DC voltage to the drive circuit 42 . The lower arm power supply circuit 38 is provided independently of the upper arm power supply circuit 37 . For example, no voltage is supplied from the upper arm power supply circuit 37 to the lower arm power supply circuit 38 . No voltage is supplied from the lower arm power supply circuit 38 to the upper arm power supply circuit 37 .
　図８は、上アーム用電源回路３７が、スイッチング素子、及びトランスを備える例を示す。当該トランスには、インバータ回路５の上アームと単相ブリッジインバータ回路２０の上アームとに含まれるスイッチング素子のそれぞれに対応する二次側コイルが備えられる。図８に示す例では、上アーム用電源回路３７のトランスに、インバータ回路５の上アームに含まれる３つのスイッチング素子に対応して３つの二次側コイルが備えられる。これら３つの二次側コイルに誘導された交流電圧は、それぞれが整流及び平滑化され、駆動回路３９内の対応するゲート駆動用の回路に供給される。 FIG. 8 shows an example in which the upper arm power supply circuit 37 includes a switching element and a transformer. The transformer includes secondary coils corresponding to switching elements included in the upper arm of the inverter circuit 5 and the upper arm of the single-phase bridge inverter circuit 20, respectively. In the example shown in FIG. 8 , the transformer of the upper arm power supply circuit 37 is provided with three secondary coils corresponding to the three switching elements included in the upper arm of the inverter circuit 5 . The AC voltages induced in these three secondary coils are rectified and smoothed, respectively, and supplied to corresponding gate drive circuits in the drive circuit 39 .
　また、図８に示す例では、上アーム用電源回路３７に、単相ブリッジインバータ回路２０の上アームに含まれる２つのスイッチング素子に対応して２つの二次側コイルが備えられる。これら２つの二次側コイルに誘導された交流電圧は、それぞれが整流及び平滑化され、駆動回路４１内の対応するゲート駆動用の回路に供給される。 In addition, in the example shown in FIG. 8 , the upper arm power supply circuit 37 is provided with two secondary coils corresponding to the two switching elements included in the upper arm of the single-phase bridge inverter circuit 20 . The AC voltages induced in these two secondary coils are rectified and smoothed, respectively, and supplied to corresponding gate drive circuits in the drive circuit 41 .
　図８は、下アーム用電源回路３８が、スイッチング素子、及びトランスを備える例を示す。当該トランスには、インバータ回路５の下アームに対応する二次側コイルと単相ブリッジインバータ回路２０の下アームに対応する二次側コイルとが備えられる。インバータ回路５の下アームに対応する二次側コイルに誘導された交流電圧は、整流及び平滑化され、駆動回路４０に供給される。駆動回路４０には、インバータ回路５の下アームに含まれる３つのスイッチング素子に対応して３つのゲート駆動用の回路が備えられる。下アーム用電源回路３８からの直流電圧は、駆動回路４０内で、これら３つのゲート駆動用の回路のそれぞれに供給される。 FIG. 8 shows an example in which the lower arm power supply circuit 38 includes a switching element and a transformer. The transformer includes a secondary coil corresponding to the lower arm of the inverter circuit 5 and a secondary coil corresponding to the lower arm of the single-phase bridge inverter circuit 20 . The AC voltage induced in the secondary coil corresponding to the lower arm of the inverter circuit 5 is rectified and smoothed and supplied to the drive circuit 40 . The drive circuit 40 includes three gate drive circuits corresponding to the three switching elements included in the lower arm of the inverter circuit 5 . A DC voltage from the lower arm power supply circuit 38 is supplied to each of these three gate drive circuits in the drive circuit 40 .
　また、単相ブリッジインバータ回路２０の下アームに対応する二次側コイルに誘導された交流電圧は、整流及び平滑化され、駆動回路４２に供給される。駆動回路４２には、単相ブリッジインバータ回路２０の下アームに含まれる２つのスイッチング素子に対応して２つのゲート駆動用の回路が備えられる。下アーム用電源回路３８からの直流電圧は、駆動回路４２内で、これら２つのゲート駆動用の回路のそれぞれに供給される。 Also, the AC voltage induced in the secondary coil corresponding to the lower arm of the single-phase bridge inverter circuit 20 is rectified and smoothed and supplied to the drive circuit 42 . The drive circuit 42 is provided with two gate drive circuits corresponding to the two switching elements included in the lower arm of the single-phase bridge inverter circuit 20 . A DC voltage from the lower arm power supply circuit 38 is supplied to each of these two gate drive circuits in the drive circuit 42 .
　図７及び図８に示す例では、上アーム用電源回路３７又は下アーム用電源回路３８の一方から電圧が供給されなければ、インバータ回路５及び単相ブリッジインバータ回路２０の双方が停止する。即ち、モータ１２が停止し、ブレーキ装置１３が阻止力を発生させる。このため、エレベーター装置の安全性を高めることができる。 In the examples shown in FIGS. 7 and 8, both the inverter circuit 5 and the single-phase bridge inverter circuit 20 stop if voltage is not supplied from either the upper arm power supply circuit 37 or the lower arm power supply circuit 38 . That is, the motor 12 is stopped and the braking device 13 generates blocking force. Therefore, the safety of the elevator system can be enhanced.
　図７及び図８に示す例では、インバータ回路５及び単相ブリッジインバータ回路２０が上アーム用電源回路３７と下アーム用電源回路３８とを共用する。このため、電源回路１９を簡素化することができる。 In the examples shown in FIGS. 7 and 8, the inverter circuit 5 and the single-phase bridge inverter circuit 20 share the upper arm power supply circuit 37 and the lower arm power supply circuit 38 . Therefore, the power supply circuit 19 can be simplified.
　図９は、実施の形態１におけるエレベーター装置の他の例を示す図である。図７及び図８は、制御回路１８が電源回路２４から直流電圧を供給される例を示す。制御回路１８は、単相ダイオードブリッジ回路３０からの直流電圧に基づく電源供給が行われても良い。図９は、制御回路１８が電源回路１９から直流電圧を供給される例を示す。 FIG. 9 is a diagram showing another example of the elevator device according to Embodiment 1. FIG. 7 and 8 show an example in which the control circuit 18 is supplied with a DC voltage from the power supply circuit 24. FIG. The control circuit 18 may be supplied with power based on the DC voltage from the single-phase diode bridge circuit 30 . FIG. 9 shows an example in which the control circuit 18 is supplied with a DC voltage from the power supply circuit 19 .
　図９に示す例では、下アーム用電源回路３８のトランスに、制御回路１８に対応する二次側コイルが更に備えられる。当該二次側コイルに誘導された交流電圧は、整流及び平滑化され、制御回路１８に供給される。制御回路１８には、駆動回路１６に含まれるスイッチング素子に対応したゲートドライバ（ＧＤ）とゲート駆動用の回路とが備えられる。下アーム用電源回路３８からの直流電圧は、当該ゲート駆動用の回路に供給される。 In the example shown in FIG. 9 , the transformer of the lower arm power supply circuit 38 is further provided with a secondary coil corresponding to the control circuit 18 . The AC voltage induced in the secondary coil is rectified and smoothed and supplied to the control circuit 18 . The control circuit 18 includes a gate driver (GD) corresponding to the switching element included in the drive circuit 16 and a gate drive circuit. A DC voltage from the lower arm power supply circuit 38 is supplied to the gate driving circuit.
　図９に示す例では、下アーム用電源回路３８から電圧が供給されなければ、制御回路１８も停止する。このため、ブレーキ装置１３が阻止力を発生させるタイミングを更に早めることができる。これにより、エレベーター装置の安全性を更に高めることができる。 In the example shown in FIG. 9, if no voltage is supplied from the lower arm power supply circuit 38, the control circuit 18 also stops. Therefore, the timing at which the braking device 13 generates the blocking force can be further advanced. Thereby, the safety of the elevator system can be further enhanced.
　他の例として、上アーム用電源回路３７のトランスに、制御回路１８に対応する二次側コイルが備えられても良い。即ち、制御回路１８は、上アーム用電源回路３７から直流電圧が供給されても良い。 As another example, the transformer of the upper arm power supply circuit 37 may be provided with a secondary coil corresponding to the control circuit 18 . That is, the control circuit 18 may be supplied with a DC voltage from the upper arm power supply circuit 37 .
　本開示に係る電気安全装置は、あらゆる種類のエレベーター装置に適用できる。 The electrical safety device according to the present disclosure can be applied to all kinds of elevator devices.
　１　交流電源、　２　コンバータ回路、　３　母線、　４　平滑コンデンサ、　５　インバータ回路、　６　制御回路、　７　かご、　８　つり合いおもり、　９　ロープ、　１０　巻上機、　１１　駆動綱車、　１２　モータ、　１３　ブレーキ装置、　１４　ブレーキコイル、　１５　ＤＣ－ＤＣコンバータ、　１６　駆動回路、　１７～１８　制御回路、　１９　電源回路、　２０　単相ブリッジインバータ回路、　２１　絶縁トランス、　２２　単相ダイオードブリッジ回路、　２３　電気安全装置、　２４　電源回路、　２５　安全チェーン回路、　２６　単相ブリッジインバータ回路、　２７　制御回路、　２８～２９　接点回路、　３０　単相ダイオードブリッジ回路、　３１～３３　監視回路、　３４　抵抗、　３５　スイッチング素子、　３６　制御回路、　３７　上アーム用電源回路、　３８　下アーム用電源回路、　３９～４２　駆動回路、　５０　かご戸、　５１　かご戸スイッチ、　５１ａ　接点、　５２　乗場戸、　５３　乗場戸スイッチ、　５３ａ　接点 1 AC power supply, 2 converter circuit, 3 busbar, 4 smoothing capacitor, 5 inverter circuit, 6 control circuit, 7 cage, 8 counterweight, 9 rope, 10 hoisting machine, 11 drive sheave, 12 motor, 13 brake device, 14 Brake coil 15 DC-DC converter 16 Drive circuit 17-18 Control circuit 19 Power circuit 20 Single-phase bridge inverter circuit 21 Insulation transformer 22 Single-phase diode bridge circuit 23 Electrical safety device 24 Power circuit , 25 Safety chain circuit, 26 Single-phase bridge inverter circuit, 27 Control circuit, 28-29 Contact circuit, 30 Single-phase diode bridge circuit, 31-33 Monitoring circuit, 34 Resistor, 35 Switching element, 36 Control circuit, 37 Upper arm power supply circuit, 38 lower arm power supply circuit, 39-42 drive circuit, 50 car door, 51 car door switch, 51a contact, 52 landing door, 53 landing door switch, 53a contact

Claims (8)

  1. 　直列に接続された複数の安全装置接点を含む安全チェーン回路からの直流電圧を交流電圧に変換する単相ブリッジインバータ回路と、
    　かご戸スイッチの第１接点を含み、前記単相ブリッジインバータ回路の交流側の第１出力に接続された第１接点回路と、
    　乗場戸スイッチの複数の第２接点を含み、前記複数の第２接点が直列に接続され、前記単相ブリッジインバータ回路の交流側の第２出力に接続された第２接点回路と、
    　前記第１接点及び前記複数の第２接点が閉じられると、前記単相ブリッジインバータ回路から前記第１接点回路及び前記第２接点回路を介して入力される交流電圧を直流電圧に変換する単相整流回路と、
    を備えたエレベーターの電気安全装置。     a single-phase bridge inverter circuit for converting a DC voltage to an AC voltage from a safety chain circuit including a plurality of safety contacts connected in series;
    a first contact circuit including a first contact of a car door switch and connected to a first output on the AC side of the single-phase bridge inverter circuit;
    a second contact circuit including a plurality of second contacts of a landing door switch, wherein the plurality of second contacts are connected in series and connected to a second output on the AC side of the single-phase bridge inverter circuit;
    When the first contact and the plurality of second contacts are closed, the single-phase converts an AC voltage input from the single-phase bridge inverter circuit via the first contact circuit and the second contact circuit into a DC voltage. a rectifier circuit;
    Elevator electrical safety device with
  2. 　前記第１接点回路の前記単相整流回路側と前記第２出力との間に接続された第１監視回路と、
    　前記第２接点回路の前記単相整流回路側と前記第１出力との間に接続された第２監視回路と、
    を更に備えた請求項１に記載のエレベーターの電気安全装置。     a first monitoring circuit connected between the single-phase rectifier circuit side of the first contact circuit and the second output;
    a second monitoring circuit connected between the single-phase rectifier circuit side of the second contact circuit and the first output;
    The elevator electrical safety device of claim 1, further comprising:
  3. 　請求項１又は請求項２に記載された前記電気安全装置と、
    　交流電源からの交流電圧を直流電圧に変換するコンバータ回路と、
    　前記コンバータ回路の直流側に接続された平滑コンデンサと、
    　前記平滑コンデンサによって平滑化された直流電圧を交流電圧に変換し、巻上機のモータを駆動するインバータ回路と、
    を備えたエレベーター装置。     The electrical safety device according to claim 1 or claim 2;
    a converter circuit that converts an AC voltage from an AC power supply to a DC voltage;
    a smoothing capacitor connected to the DC side of the converter circuit;
    an inverter circuit that converts the DC voltage smoothed by the smoothing capacitor into an AC voltage to drive the motor of the hoist;
    Elevator device with
  4. 　前記電気安全装置は、前記交流電源からの交流電圧を直流電圧に変換し、前記安全チェーン回路に供給する第１電源回路を更に備えた請求項３に記載のエレベーター装置。 The elevator apparatus according to claim 3, wherein the electrical safety device further comprises a first power supply circuit that converts an AC voltage from the AC power supply into a DC voltage and supplies the DC voltage to the safety chain circuit.
  5. 　前記インバータ回路を制御する第１制御回路と、
    　前記巻上機のブレーキ装置を駆動するための回路に対して直流電圧を供給する第２電源回路と、
    　前記第２電源回路を制御する第２制御回路と、
    　前記第１制御回路及び前記第２制御回路に直流電圧を供給する第３電源回路と、
    を更に備え、
    　前記第３電源回路は、前記単相整流回路から直流電圧が供給される請求項３又は請求項４に記載のエレベーター装置。     a first control circuit that controls the inverter circuit;
    a second power supply circuit that supplies a DC voltage to a circuit for driving the braking device of the hoist;
    a second control circuit that controls the second power supply circuit;
    a third power supply circuit that supplies a DC voltage to the first control circuit and the second control circuit;
    further comprising
    5. The elevator apparatus according to claim 3, wherein the third power supply circuit is supplied with a DC voltage from the single-phase rectifier circuit.
  6. 　前記第１制御回路は、
    　前記インバータ回路の上アームに含まれるスイッチング素子を駆動するための第１駆動回路と、
    　前記インバータ回路の下アームに含まれるスイッチング素子を駆動するための第２駆動回路と、
    を備え、
    　前記第３電源回路は、
    　前記第１駆動回路に直流電圧を供給する上アーム用電源回路と、
    　前記上アーム用電源回路とは独立して設けられ、前記第２駆動回路に直流電圧を供給する下アーム用電源回路と、
    を備えた請求項５に記載のエレベーター装置。     The first control circuit is
    a first drive circuit for driving a switching element included in the upper arm of the inverter circuit;
    a second drive circuit for driving a switching element included in the lower arm of the inverter circuit;
    with
    The third power supply circuit is
    an upper arm power supply circuit that supplies a DC voltage to the first drive circuit;
    a lower arm power supply circuit provided independently of the upper arm power supply circuit for supplying a DC voltage to the second drive circuit;
    6. The elevator system of claim 5, comprising:
  7. 　前記第２制御回路は、
    　前記第２電源回路の上アームに含まれるスイッチング素子を駆動するための第３駆動回路と、
    　前記第２電源回路の下アームに含まれるスイッチング素子を駆動するための第４駆動回路と、
    を備え、
    　前記上アーム用電源回路は、前記第３駆動回路に直流電圧を供給し、
    　前記下アーム用電源回路は、前記第４駆動回路に直流電圧を供給する請求項６に記載のエレベーター装置。     The second control circuit is
    a third drive circuit for driving a switching element included in the upper arm of the second power supply circuit;
    a fourth drive circuit for driving a switching element included in the lower arm of the second power supply circuit;
    with
    The upper arm power supply circuit supplies a DC voltage to the third drive circuit,
    7. The elevator apparatus according to claim 6, wherein the lower arm power supply circuit supplies DC voltage to the fourth drive circuit.
  8. 　前記ブレーキ装置を駆動するための前記回路を制御する第３制御回路を更に備え、
    　前記第３電源回路は、前記第３制御回路に直流電圧を供給する請求項５から請求項７の何れか一項に記載のエレベーター装置。     further comprising a third control circuit for controlling the circuit for driving the braking device;
    8. The elevator apparatus according to any one of claims 5 to 7, wherein the third power supply circuit supplies DC voltage to the third control circuit.
PCT/JP2021/045648 2021-12-10 2021-12-10 Electric safety device for elevator, and elevator device WO2023105786A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2023566057A JPWO2023105786A1 (en) 2021-12-10 2021-12-10
PCT/JP2021/045648 WO2023105786A1 (en) 2021-12-10 2021-12-10 Electric safety device for elevator, and elevator device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/045648 WO2023105786A1 (en) 2021-12-10 2021-12-10 Electric safety device for elevator, and elevator device

Publications (1)

Publication Number Publication Date
WO2023105786A1 true WO2023105786A1 (en) 2023-06-15

Family

ID=86729905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/045648 WO2023105786A1 (en) 2021-12-10 2021-12-10 Electric safety device for elevator, and elevator device

Country Status (2)

Country Link
JP (1) JPWO2023105786A1 (en)
WO (1) WO2023105786A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04266388A (en) * 1990-12-26 1992-09-22 Mitsubishi Electric Corp Control device for elevator
JPH09208164A (en) * 1996-02-06 1997-08-12 Mitsubishi Electric Corp Elevator door device
JP2004217338A (en) * 2003-01-10 2004-08-05 Toshiba Corp Door device for elevator
JP2013234073A (en) * 2013-07-23 2013-11-21 Otis Elevator Co Elevator having shallow pit and/or low overhead
JP2018102033A (en) * 2016-12-19 2018-06-28 株式会社安川電機 Motor control system, startup method therefor, and auxiliary device for motor control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04266388A (en) * 1990-12-26 1992-09-22 Mitsubishi Electric Corp Control device for elevator
JPH09208164A (en) * 1996-02-06 1997-08-12 Mitsubishi Electric Corp Elevator door device
JP2004217338A (en) * 2003-01-10 2004-08-05 Toshiba Corp Door device for elevator
JP2013234073A (en) * 2013-07-23 2013-11-21 Otis Elevator Co Elevator having shallow pit and/or low overhead
JP2018102033A (en) * 2016-12-19 2018-06-28 株式会社安川電機 Motor control system, startup method therefor, and auxiliary device for motor control

Also Published As

Publication number Publication date
JPWO2023105786A1 (en) 2023-06-15

Similar Documents

Publication Publication Date Title
US9873591B2 (en) Brake controller, elevator system and a method for performing an emergency stop with an elevator hoisting machine driven with a frequency converter
US7176653B2 (en) Electric motor drive
US8207700B2 (en) Electric motor drive
JP4986541B2 (en) Elevator control device
CN108946369B (en) Method for performing manual driving in elevator after main power supply is turned off
US20130133987A1 (en) Electricity supply apparatus and an elevator system
WO2006074696A1 (en) Operation device for an elevator system
JP4864620B2 (en) Three-phase load operation device
WO2023105786A1 (en) Electric safety device for elevator, and elevator device
JPH11322208A (en) Elevator controller
JPH05132262A (en) Ropeless elevator system
JP3669761B2 (en) Elevator operation device
JP7375503B2 (en) elevator power supply
JPH0368637B2 (en)
KR20070097098A (en) Operation device for an elevator system
JP2009220907A (en) Control device of elevator
JPH0859125A (en) Operation of linear motor elevator
JPS61112537A (en) Elevator controller

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21967278

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023566057

Country of ref document: JP