JPH05132262A - Ropeless elevator system - Google Patents

Abstract

PURPOSE:To provide a ropeless elevator system that is excellent in safety and reliability by installing plural units of linear synchronous motors and plural units of drive controllers in equal number to the motors. CONSTITUTION:This elevator system is provided with plural units of linear synchronous motors composed of two armature coils 22A, 22B installed in an elevator shaft at the side of a building and field permanent magnets 25A, 25B set up in an elevator car 24, and plural units of drive controllers 27A, 27B driving these plural linear synchronous motors. With this constitution, even if the linear synchronous motor or the drive controller on one side becomes out of order, the elevator cage is liftable by the motor and the controller on the other, so that safety and reliability in this ropeless elevator system are improvable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low press elevator apparatus, and more particularly to a low press elevator apparatus using a linear synchronous motor.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram showing a general elevator apparatus using a conventional rope. In the figure, 1 is a machine room at the uppermost part of the elevator hoistway, 2 is an elevator car hoist, 3 is a warp wheel, 4 is a rope hung on the hoisting machine 2 and the warp wheel 3, and 5 is a rope 4. An elevator car attached at one end, 6 is a rope 4
7 is a counterweight attached to the other end of the elevator, 7 is a governor device for detecting the falling speed of the elevator car 5, 8 is a governor rope for actuating the emergency stop 9 when the governor device 7 is activated, 10 is a hoist 2 Reducer, 11 is a drive motor for a winder, 12 is a braking device for the drive motor 11, 13 is an encoder for detecting the speed of the drive motor 11 and the position of the elevator, and 14 is the drive motor 11
A control device for an elevator including an inverter for controlling the motor, 15 is a power supply no-fuse breaker for the control device 14 for the elevator, and 16 is an elevator car 5 manually placed at a fixed position in the building when the control device 14 for the elevator or the like fails. It is a rescue hand-wound handle to be operated by.

In the conventional elevator apparatus having such a structure, since the brake device 12 and the hoisting machine 2 are inside the machine room 1 of the building, even when the elevator control device 14 or the like fails, the hand-wound handle The elevator car 5 can be moved up and down by means of 16, which makes it possible to easily rescue passengers trapped in the elevator car 5.

However, in such a conventional elevator apparatus, since there is a rope 4 for suspending an elevator car 5 and a counterweight 6, a rope weight is taken into consideration when it is used as a lifting apparatus for a skyscraper Diug of 1000 m or more, for example. Etc. becomes a problem and is not practical. Therefore, as a means for solving such a problem, a linear synchronous motor composed of an armature coil arranged on the building side and a permanent magnet or a superconducting coil arranged on the car side is used to connect the rope. A low-press elevator device that directly goes up and down without doing so is conceivable.

FIG. 8 is a perspective view showing such a conventional low press elevator apparatus. In the figure, 20 is an elevator hoistway provided on the building side, 21A and 21B are linear synchronous motor yokes installed so as to face the right and left sides of the elevator hoistway 20, and 22A and 22B are yokes 21A and 21B. Armature coils of linear synchronous motors installed so as to face each other, 23 is an elevator guide rail, 24 is an elevator car, and 25 is an elevator car.
A and 25B (see FIG. 9) are field permanent magnets of a linear synchronous motor that are attached to the elevator car 24 so as to face the right and left sides, and 26A and 26B are on the right and left sides of the upper part of the elevator car 24. Attached buffer. Thus, here, the elevator is driven by two sets of left and right linear synchronous motors.

FIG. 9 is a block diagram showing an example of the connection relationship between the drive control device and the linear synchronous motor of the conventional low press elevator device of FIG. In the figure, 22A1 is an armature coil disposed below the left armature coil 22A,
22A2 is an armature coil arranged below the armature coil 22A1, 22B1 is an armature coil arranged below the right armature coil 22B, 22B2 is an armature coil arranged below the armature coil 22B1, Reference numeral 27 is a drive control device for driving each armature coil of the linear synchronous motor, 28 is a three-phase power supply line, and 29 is an armature coil 22A, 22B from the drive control device 27 via the three-phase power supply line 28.
A switch 30 for switching power supply to the armature coil 2 from the drive control device 27 via the three-phase power supply line 28.
2A1 and 22B1 is a changeover switch for changing over the power supply to the armature coils 22A2 and 22B2 from the drive control device 27 through the three-phase power supply line 28. As described above, in the linear synchronous motor, since the armature coils, which are the stators, are usually arranged on the building side, the coil length is required for the hoistway length, that is, the building height. Therefore, the armature coil is usually divided as shown in FIG. Therefore, the three-phase output of the drive control device 27 that drives each armature coil of the linear synchronous motor is sequentially switched by the changeover switches 29 to 31 according to the movement of the car of the elevator, and power is supplied to each armature coil. Thus, here, the elevator car is driven by a pair of left and right linear synchronous motors. Since the changeover switches 29 to 31 are not directly related to the present invention, the description thereof will be omitted, but it is generally performed by detecting the position of the elevator car. Further, since the principle of the linear synchronous motor or the like and the brake device for emergency stop are not directly related to the present invention, the description thereof will be omitted.

[0007]

Since the conventional low-press elevator system is constructed as described above, for example, an abnormality such as a failure of the linear synchronous motor or the drive control device causes the elevator car to stop between floors. In the case of time, since there is no rope, it is not possible to deal with this by providing a manual winding handle in the machine room like a conventional elevator device, and it is difficult to rescue passengers trapped in the elevator car. It was very problematic in terms of safety and reliability.

The present invention has been made in order to solve such a problem. For example, even when an elevator car stops between floors due to a failure of a linear synchronous motor, a drive control device, or the like, it is immediately possible. To be safe to deal with this,
The object is to obtain a low-press elevator device with excellent reliability.

[0009]

A low-press elevator apparatus according to the present invention comprises an armature coil laid in an elevator hoistway on a building side and a permanent magnet for a field installed on a car side of an elevator, or a super magnet. In a low-press elevator device driven by a linear synchronous motor composed of a conductive coil, a plurality of linear synchronous motors and the same number of drive control devices as the linear synchronous motors respectively driving the plurality of linear synchronous motors are provided. Be prepared.

A linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the car side of the elevator, or a linear synchronous motor composed of a superconducting coil. In a press elevator device, a plurality of linear synchronous motors, drive control devices of the same number as the linear synchronous motors respectively driving the plurality of linear synchronous motors, and signals between the elevator car and each drive control device It is provided with a plurality of transmitting means for transmitting and an abnormality detecting means for detecting an abnormality of the transmitting means.

An uninterruptible power supply is provided for at least one of the plurality of drive control devices.

A standby power source is provided for at least one of the plurality of drive control devices.

Further, a transfer means for mutually transferring the current command calculated by the drive control device is provided between the plurality of drive control devices, and if the error between the current command values is less than a predetermined value, the average value of each of them is calculated. The current command value of the actual linear synchronous motor is used, and if it is a predetermined value or more, each drive control device temporarily issues a stop command.

A linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the car side of the elevator, or a linear synchronous motor composed of a superconducting coil. In a press elevator apparatus, a plurality of linear synchronous motors, a converter for converting at least input AC power into DC power, and DC power from the converter are converted into AC power, and the plurality of linear synchronous motors are respectively driven. And a drive control device having the same number of inverters as the linear synchronous motor.

[0015]

In the present invention, a separate drive control device is provided for each of the plurality of linear synchronous motors. As a result, even if one of the linear synchronous motors or the drive control device fails, the other linear synchronous motor and the drive control device can move the elevator car up and down.

Further, a plurality of transmission means for transmitting signals between the elevator car and each drive control device, and an abnormality detection means for detecting an abnormality of these transmission means are provided. In this way, if one of the transmission means becomes abnormal, the other transmission means can be used, and the low press elevator can be operated stably even when the transmission line on the building side and the elevator car side is abnormal. Becomes

An uninterruptible power supply is provided for at least one of the plurality of drive control devices. As a result, the low press elevator can be operated normally even when the input power source of the drive control device is interrupted or lowered.

A standby power source is provided for at least one of the plurality of drive control devices. As a result, the low press elevator can be operated normally even when the input power source of the drive control device is interrupted or lowered.

Further, a transfer means for mutually transferring the current command calculated by these drive control devices is provided between the plurality of drive control devices, and if the error of the mutual current command values is less than a predetermined value, the average value of each of them. Is an actual current command value of the linear synchronous motor, and if it is a predetermined value or more, each drive control device once issues a stop command. Thereby, the reliability of the low press elevator device can be further improved.

Further, at least a converter for converting input AC power into DC power and a converter for converting DC power from this converter into AC power and driving the plurality of linear synchronous motors with the same number of inverters as the linear synchronous motors, respectively. A drive control device having the same is provided. This can simplify the entire configuration.

[0021]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention,
The parts corresponding to those in FIG. 9 are designated by the same reference numerals, and the duplicate description thereof will be omitted. In the figure, 27A and 27B are drive control devices for driving a linear synchronous motor, and 28A and 28B.
Is a three-phase power supply line, 29A is a changeover switch for switching power supply from the drive control device 27A to the armature coil 22A via the three-phase power supply line 28A, and 30A is a drive control device 27A.
From the drive control device 27A to the armature coil 22A2 via the three-phase power supply line 28A, the changeover switch 31A switches the power supply to the armature coil 22A1 via the three-phase power supply line 28A.
9B is a changeover switch for switching the power supply from the drive control device 27B to the armature coil 22B via the three-phase power supply line 28B, and 30B is a three-phase power supply line 2 from the drive control device 27B.
8B, a changeover switch for switching the power supply to the armature coil 22B1, 31B is a changeover switch for switching the power supply from the drive control device 27B to the armature coil 22B2 via the three-phase power supply line 28B, and 32 is the drive control device 27A and High-speed optical fiber cables 33A, 33B as transfer means for interconnecting the drive control devices 27B
Is a power transformer that connects the drive control devices 27A and 27B to different power sources. Although a pair of left and right linear synchronous motors are provided here, a plurality of linear synchronous motors may be provided.

Here, the armature coils 22A and 22B, 2
2A1 and 22B1, 22A2 and 22B2, and drive controllers 27A and 27B, so that it is necessary to completely synchronize and supply current, the two drive controllers 27A and 27B.
B is interconnected by the high-speed optical fiber cable 32 as described above, and is adapted to perform high-speed data transfer comparison of current command signals. Also, the armature coil 22A on one side
22A2 and permanent magnet 25A or armature coils 22B-2
The thrust generated by the linear synchronous motor on only one side by 2B2 and the permanent magnet 25B is sufficient to operate the low press elevator device, for example, the elevator car is moved up and down, or is made stationary, or is lowered at a predetermined speed. It is assumed that there is a thrust to do so. As a result, even if the drive control device or the linear synchronous motor on one side fails, if the drive control device and the linear synchronous motor on the other side are operating normally, there will be no problem in operating the low press elevator device. Does not occur. Also, in normal operation, a predetermined current is passed through the left and right linear synchronous motors to raise and lower the elevator. However, when a linear synchronous motor on one side fails, another linear synchronous motor on one side has twice the predetermined current. To flush. This makes it possible to secure the necessary thrust on the elevator car.

FIG. 2 shows the drive control devices 27A and 27 of FIG.
It is a block diagram which shows an example of the concrete circuit structure of B. 41
A and 41B are no-fuse breakers connected to the power transformers 33A and 33B (FIG. 1), 42A and 42B, respectively.
B is a reactor connected to the no-fuse breakers 41A and 41B, 43A and 43B are connected to the reactors 42A and 42B, respectively, and is a semiconductor device having a self-erasing function, such as a transistor, or a GTO, IGB.
It is a converter capable of regenerating AC voltage composed of forced commutation elements such as T and FET to DC voltage. Usually, in a low-press elevator device to which a linear synchronous motor is applied, since the regenerative mode is set at the time of descending, the amount of regenerative energy is large, and the function of regenerating this regenerative energy to the power source is important. Therefore, converters 43A, 4
3B is also designed to have this power regeneration function.
Since the principle of the power regeneration function is not directly related to the present invention, its explanation is omitted. 44
A and 44B are smoothing capacitors connected to the output sides of the converters 43A and 43B, respectively, and 45A and 45B are connected to both ends of the capacitors 44A and 44B, respectively, and are semiconductor elements having a self-erasing function, such as transistors or GTOs or IGBTs. , An inverter for converting a DC voltage composed of a forced commutation element such as FET into a three-phase AC current, and 46A and 46B are converters 43A and 4A, respectively.
A current detector for detecting the input current I _AC supplied to 3B,
47A and 47B are armature coils 22A and 22 of the linear synchronous motors on the left and right of the inverters 45A and 45B, respectively.
A current detector for detecting the motor current supplied to B, etc., 4
8A and 48B generate PWM (pulse width) signals in response to the input voltage V _AC , the input current I _AC , the converter feedback voltage V _DC, etc. supplied to the converters 43A and 43B, respectively, and control the converters 43A and 43B. Converter voltage controller for adjusting the output voltage of the converter, 49A, 4
9B compares the motor current detected by the current detectors 47A and 47B with a current command signal I _COM, which will be described later, and generates a PWM signal according to the comparison result.
An inverter current control unit for controlling A and 45B so that a predetermined three-phase current flows to the armature coils 22A and 22B of the linear synchronous motor, 50A and 50B are antennas (not shown) and transmissions from the elevator car 24. A position / speed detecting unit for detecting a position signal and a speed signal transmitted via an inductive wireless transmission device or a leaky coaxial cable 53 as means, 51A and 51B are respectively the position / speed detecting unit 50.
The output signals from A and 50B are standardized to a predetermined value, the position command signal internally generated by the signal from the call button 54, the position with respect to the speed command signal, and the speed deviation are obtained, and the voltage command is given. The signal V _COM is supplied to the converter voltage control units 48A and 48B, respectively, and the current command signal I _COM is supplied to the inverter current control unit 49, respectively.
Position / speed control unit for supplying A and 49B, 52A and 52
B checks based on the output signals of the current detectors 47A and 47B whether or not the motor current flows above a predetermined value, and the position / speed detectors 50A and 5A respectively.
Based on the output signal from 0B, it is checked whether the speed of the elevator car 24 is within a predetermined value, and when there is an abnormality, the output signal EMSTOP is output to the converter voltage control unit 48A, the inverter current control unit 49A and the position / speed. The control unit 51A and the converter voltage control unit 48B,
Inverter current controller 49B and position / speed controller 51
It is an abnormality detection unit for supplying to B.

Now, for example, when an abnormality occurs on the drive control device 27A side, the abnormality detection section 52A generates an output signal EMSTOP indicating the abnormality, which stops the operation of the converter voltage control section 48A and also causes an inverter current control section. 49A cuts off the motor current, and causes the position / speed control unit 51A to change the speed command to a stop command, and further, via the position / speed control unit 51A and the optical fiber cable 32, the position / speed of the drive control device 27B. The fact that the drive control device 27A side is abnormal is transmitted to the control unit 51B. As a result, the drive control device 27A enters the abnormal operation mode and stops its operation, and the drive control device 27B sets the armature coil 22.
The motor current is increased and control is performed to output the necessary thrust so that only the right side linear synchronous motor composed of B and the permanent magnet 25B can be operated.

Further, the drive control device 27A and the drive control device 2
7B, one side does not work, no fuse breaker 41
Even when the A and 41B are cut off and repaired, the other one needs to operate normally, and therefore the signals transmitted to each other need to be insulated. Therefore, the drive control device 27 (not shown) is also provided.
Fiber optic cable 32 between A and drive controller 27B
An electrical insulating means, for example, a photocoupler is inserted in this. Further, when the current command signal is generated, the necessary current amplitude command signal and current phase command signal are the drive control device 2
Since it is necessary to exchange data at high speed between the 7A and the drive control device 27B, high-speed data transmission is performed by the optical fiber cable 32. The data transmitted alternately are
If the speed control units 51A and 51B compare and the comparison error is less than or equal to a predetermined value, the average value of the two is used as command data, and if the comparison error is greater than or equal to the predetermined value, a stop command is output for safety.

Example 2. FIG. 3 is a block diagram showing another embodiment of the present invention. In the present embodiment, compared with the first embodiment, the drive control devices for driving the armature coils of the left and right linear synchronous motors are not separately provided, but the converter is common.
Only the inverter, the inverter current control unit, and the current detector for detecting the motor current are separately provided, and the other remaining portions are configured as a common circuit. Therefore, in FIG. 3, parts corresponding to those in FIG. 2 are designated by the same reference numerals, and detailed description thereof will be omitted. In FIG. 3, 27C is a drive controller, 41
Is a no-fuse breaker connected to a power transformer (not shown), 42 is a reactor connected to the no-fuse breaker 41, 43 is connected to the reactor 42, and is a semiconductor element having a self-erasing function, such as a transistor or GTO, It is a converter capable of regenerating AC voltage composed of forced commutation elements such as IGBT and FET to DC voltage. Usually, in a low-press elevator device to which a linear synchronous motor is applied, since the regenerative mode is set at the time of descending, the amount of regenerative energy is large, and the function of regenerating this regenerative energy to the power source is important. Therefore, the converter 43 also has the power regeneration function.
Since the principle of the power regeneration function is not directly related to the present invention, its explanation is omitted. 44 is a smoothing capacitor connected to the output side of the converter 43, 46 is a current detector for detecting the input current I _AC supplied to the converter 43, and 48 is an input voltage V _AC and input current I supplied to the converter 43. A converter voltage controller for generating a PWM (pulse width) signal in response to _AC , converter feedback voltage V _DC, etc., and controlling the converter 43 to adjust its output voltage, 50 is an elevator car 24
Position and speed signals detected from the induction wireless transmission device or leaky coaxial cable 53
The speed detection unit 51 normalizes the output signal from the position / speed detection unit 50 to a predetermined value, and a position command signal internally generated by a signal from the call button 54 and the position of the speed command signal, Velocity deviation is obtained and this is used as voltage command signal V
_It is supplied to the converter voltage control unit 48 as _COM and the inverter current control unit 49 is supplied as current command signal I _COM.
The position / speed control unit 52 for supplying A and 49B checks whether or not the motor current is flowing over a predetermined value based on the output signals of the current detection units 47A and 47B, and the position / speed detection unit. Based on the output signal from 50, it is checked whether the speed of the elevator car 24 is within a predetermined value, and when there is an abnormality, the output signal EMST
It is an abnormality detection unit that supplies OP to the converter voltage control unit 48, the inverter current control unit 49A, the inverter current control unit 49B, and the position / speed control unit 51, respectively.

In this embodiment, the main circuit inverter 45 is used.
It is a double system for failures such as A and 45B, but is a single system for other failures. However, even when the abnormality detection unit 52 detects an abnormality, high-speed data transmission using an optical fiber cable or the like is not necessary, so the overall configuration is very simple.

Example 3. FIG. 4 is a block diagram showing another embodiment of the present invention. The parts corresponding to those in FIG. 2 are designated by the same reference numerals and the detailed description thereof will be omitted. In FIG. 4, 61A
Is a cross guide wire for inductive radio or a leaky coaxial cable for transmitting a signal between the drive control device 27A and the elevator car 24, and 61B is a signal between the drive control device 27B and the elevator car 24. A crossing induction wire for inductive radio or a leaky coaxial cable as a transmission means for transmitting,
62A and 62B are attached to the car 24 of the elevator, and are antennas 63 for communicating with the crossing induction wires for induction radio or the leaky coaxial cables 61A and 61B, respectively.
A and 63B are data anomaly detectors for detecting an error in data transmitted via a crossing induction wire for inductive radio or leaky coaxial cables 61A and 61B, 64A and 64B, respectively.
Is the position / speed detection unit 50 of the drive control device 27A.
A and a changeover switch provided between the position / speed detection unit 27B of the drive control device 27B and the data abnormality detection unit 63A, and 65A and 65B are respectively the drive control device 27A.
The switch is provided between the position / speed detecting unit 50A, the position / speed detecting unit 27B of the drive control device 27B, and the data abnormality detecting unit 63B.

The data abnormality detection units 63A and 63B detect data abnormality between the elevator car 24 and the data transmission line, and use either the induction radio cross induction line or the leaky coaxial cables 61A and 61B. When is abnormal, the changeover switches 64A and 64B and the changeover switches 65A and 65B are controlled to be changed. That is, for example, when the crossing induction wire for induction radio or the line of the leaky coaxial cable 61A becomes abnormal, the changeover switch 64A,
64B is opened and the changeover switches 65A and 65B are controlled to be closed, and conversely, when the line of the induction radio cross induction line or the leaky coaxial cable 61B is abnormal, the changeover switches 64A and 64B are closed. , Changeover switch 65
A and 65B are controlled to open. By controlling in this way, even when one of the transmission lines on the building side and the car side is abnormal, it is possible to stably operate the low press elevator by using the other transmission line.

Example 4. FIG. 5 is a configuration diagram showing another embodiment of the present invention. The portions corresponding to those in FIG. 4 are designated by the same reference numerals, and detailed description thereof will be omitted. In FIG. 5, 66 is a power transformer 33 as an input power source of the drive control device 27B.
A and fuseless breaker 41B of drive control device 27B
It is an uninterruptible power supply (CVCF) inserted between and. With this configuration, even if a power failure occurs, the drive control device 27B for the right linear synchronous motor operates normally, so it is not necessary to stop the low press elevator. Of course, the uninterruptible power supply 66 may be inserted between the power transformer 33A and the no-fuse breaker 41A of the drive control device 27A as an input power source of the drive control device 27A for the left side linear synchronous motor, or drive control of both of them. Device 27A, 27B
It may be inserted into and has the same effect.

Example 5. FIG. 6 is a block diagram showing another embodiment of the present invention, in which the portions corresponding to those in FIG. 4 are designated by the same reference numerals, and detailed description thereof will be omitted. In FIG. 6, reference numeral 67 denotes a battery as a backup power source, the positive electrode side of which is connected to the output terminal P of the converter 43B through a charging current limiting resistor 68 and an output diode 69 which are connected in parallel, and drive control is performed. It is connected to the control power supply CP of the device 27B and its negative side is connected to the output terminal N of the converter 43B. In this case, the voltage of the battery 67 is usually lower than the steady value of the output voltage of the converter 43B, so that the control power supply CP of the drive control device 27B is supplied from the battery 67. Further, since the output voltage of the computer 43B decreases when the low press elevator is moved up and down, when used in the down mode, that is, the regenerative mode, electric power is regenerated from the linear synchronous motor to the output terminals P and N of the converter 43B. .. Therefore, since the battery 67 operates in the charging direction, there is no particular problem even if the battery voltage is low. Of course, a standby power source such as the battery 67 may be provided for the drive control device 27A for the left linear synchronous motor, or may be provided for both drive control devices 27A and 27B.
Has the same effect. In each of the above-mentioned embodiments, the control power supply CP of the drive control device is omitted.

[0032]

As described above, according to the present invention, the armature coil laid in the elevator hoistway on the building side and the field permanent magnet or superconducting coil installed on the elevator car side are used. In the low-press elevator apparatus driven by the linear synchronous motor, the plurality of linear synchronous motors and the same number of drive control devices as the linear synchronous motors respectively driving the plurality of linear synchronous motors are provided. Even if one of the linear synchronous motors or the drive control device fails, the other linear synchronous motor and the drive control device can raise and lower the elevator car, so that the passengers trapped in the elevator car can easily be operated at the time of failure. It has the effect of being able to be rescued and improving the safety and reliability of the low press elevator device.

A linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the car side of the elevator, or a linear synchronous motor composed of a superconducting coil. In a press elevator device, a plurality of linear synchronous motors, drive control devices of the same number as the linear synchronous motors respectively driving the plurality of linear synchronous motors, and signals between the elevator car and each drive control device Since a plurality of transmitting means for transmitting and an abnormality detecting means for detecting an abnormality of the transmitting means are provided, even if one linear synchronous motor or the drive control device fails, the other linear synchronous motor and the drive control device The car of the elevator can be raised and lowered, so that the passengers trapped in the car of the elevator can be easily rescued in the event of a failure. If the transmission means of the above becomes abnormal, the other transmission means can be used, and even if the transmission line between the building side and the elevator car side is abnormal, it becomes possible to operate the low press elevator stably, It is possible to improve the safety and reliability of the elevator device.

Further, since the uninterruptible power supply is provided for at least one of the plurality of drive control devices, it is possible to operate the low press elevator normally even when the input power supply of the drive control devices is interrupted or lowered. There is an effect that becomes.

Further, since the standby power supply is provided for at least one of the plurality of drive control devices, it is possible to operate the low press elevator normally even when the input power supply of the drive control device is interrupted or reduced. Has the effect of becoming.

Further, a transfer means for mutually transferring the current command calculated by the drive control device is provided between the plurality of drive control devices, and if the error of the mutual current command values is less than a predetermined value, the average value of each is calculated. As the current command value of the actual linear synchronous motor,
If it is equal to or more than the predetermined value, the stop command is once generated in each drive control device, so that it is possible to further improve the reliability of the low press elevator device.

A linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the car side of the elevator, or a linear synchronous motor composed of a superconducting coil. In a press elevator apparatus, a plurality of linear synchronous motors, a converter for converting at least input AC power into DC power, and DC power from the converter are converted into AC power, and the plurality of linear synchronous motors are respectively driven. Since the linear synchronous motor and the drive controller having the same number of inverters are provided, even if one of the linear synchronous motors or the inverter fails, the other linear synchronous motor and the drive controller that works in the normal inverter drive the elevator car. Can be raised and lowered, making it easier for passengers to be trapped in the elevator car during a breakdown Can be rescued, safety rope-elevator apparatus with a simple structure, an effect that the reliability can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a specific example of a main part of an embodiment of the present invention.

FIG. 3 is a configuration diagram showing another embodiment of the present invention.

FIG. 4 is a configuration diagram showing another embodiment of the present invention.

FIG. 5 is a configuration diagram showing another embodiment of the present invention.

FIG. 6 is a configuration diagram showing another embodiment of the present invention.

FIG. 7 is a configuration diagram showing an elevator apparatus using a conventional rope.

FIG. 8 is a perspective view showing a conventional low press elevator apparatus.

FIG. 9 is a configuration diagram showing a conventional low press elevator apparatus.

[Explanation of symbols]

22A-22A2 armature coil 22B-22B2 armature coil 24 elevator car 25A, 25B permanent magnet 27A-27C drive control device 32 optical fiber cable 33A, 33B power transformer 43, 43A, 43B converter 45A, 45B inverter 53 induction wireless transmission Device or leaky coaxial cable 61A, 61B Cross induction wire for inductive radio or leaky coaxial cable 63A, 63B Data abnormality detection unit 66 Uninterruptible power supply 67 Battery

Claims (10)

[Claims] 1. A motor driven by a linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side, a field permanent magnet installed on the car side of the elevator, or a superconducting coil. A low-press elevator apparatus, comprising: a plurality of linear synchronous motors; and a drive control device for driving each of the plurality of linear synchronous motors. 2. The low press elevator apparatus according to claim 1, further comprising transmission means for transmitting a signal between the elevator car and the drive control device. 3. A linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the car side of the elevator, or a linear synchronous motor composed of a superconducting coil. In a press elevator device, a plurality of linear synchronous motors, drive control devices of the same number as the linear synchronous motors respectively driving the plurality of linear synchronous motors, and signals between the elevator car and each drive control device A low-press elevator apparatus comprising: a plurality of transmitting means for transmitting and an abnormality detecting means for detecting an abnormality of the transmitting means. 4. The low press elevator device according to claim 1, wherein an uninterruptible power supply is provided for at least one of the plurality of drive control devices. 5. The low press elevator apparatus according to claim 1, wherein a standby power source is provided for at least one of the plurality of drive control devices. 6. A transfer means for mutually transferring the current command calculated by the drive control device is provided between a plurality of drive control devices, and if the error between the current command values is less than a predetermined value, the average value of each of them is calculated. The low press elevator apparatus according to any one of claims 1 to 5, wherein an actual current command value of the linear synchronous motor is used, and if it is equal to or more than a predetermined value, each drive control device temporarily issues a stop command. 7. The low press elevator apparatus according to claim 1, wherein each of the plurality of drive control devices receives power from a separate power supply system. 8. The low press elevator apparatus according to claim 1, wherein the plurality of drive control devices are completely insulated. 9. A motor driven by a linear synchronous motor composed of an armature coil laid in the elevator hoistway on the building side and a field permanent magnet installed on the elevator car side, or a superconducting coil. In a press elevator apparatus, a plurality of linear synchronous motors, at least a converter that converts input AC power into DC power, and DC power from the converter that converts AC power to drive the plurality of linear synchronous motors. And a drive controller having the same number of inverters as the linear synchronous motors. 10. The low press elevator apparatus according to claim 9, further comprising transmission means for transmitting a signal between the elevator car and the drive control device.