JP2005089094A - Elevator control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a capacity of D.C. voltage of a D.C. voltage power source used for landing an elevator at a target story in power failure or failure. <P>SOLUTION: In the elevator control device, when an operation direction is determined from a load signal, the operation direction cannot be determined when a load detection system is damaged and it is required that the D.C. voltage capacity of the D.C. voltage power source is made large in consideration of power operation. In view of the above fact, the operation direction is not selected only by the load signal and it is determined that the elevator carries out the power running in response to magnitude of a torque instruction value outputted in traveling. The traveling direction is thus changed to a regeneration direction and the elevator is controlled so as to land at the target story. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator control device that reduces the power supply capacity of a DC voltage power supply used during a power failure or failure.

  FIG. 11 is a configuration diagram showing an elevator control device that performs operation control for landing an elevator to a target floor in the event of a power failure or failure, rather than control during normal operation. 101 is a battery that outputs a predetermined DC voltage A DC voltage power source 102, which is a power source, is an inverter that converts a DC voltage into predetermined AC power and supplies it to an elevator.

  The elevator includes an electric motor 103 that operates by electric power supplied from an inverter 102, a sheave 104 that rotates by receiving the rotational driving force of the electric motor 103, and a ride suspended from both ends of a rope 105 that is wound around the sheave 104. The car 106, the counterweight 107 and the like are included.

  In the elevator control system, an inverter current detector 108 for detecting an inverter current signal is provided on the output side of the inverter 102. The inverter current signal detected by the detector 108, the speed command signal from the speed command device 109, and the motor A speed control device 111 that outputs a speed control signal based on a deviation from a speed detection signal detected by a speed detector 110 attached to 103 and an output of the speed control device 111 are used to control the inverter 102. And an inverter current control device 112.

  Also, the ride weights and the counterweights at both ends of the rope wrapped around the sheave 104 will be balanced when an appropriate number of people are in the car, that is, when the car reaches the required loading weight. Has been adjusted. Therefore, the elevator operation control is a regenerative operation when the elevator is lifted with fewer people than the required load on the car, or when it is lowered with many passengers in the car, and vice versa. Becomes power running.

  Therefore, a load detection switch 113 for detecting the load on the car 106 and a load signal calculation device 114 for producing a torque compensation signal in accordance with the operation of the load detection switch 113 are provided to perform landing operation up to the target floor at the time of power failure. In this case, the inverter current control device 112 determines which of the elevator upward direction and the downward direction is the regeneration direction based on the output of the speed control device 111 and the load signal generated by the operation of the load detection switch 113. The inverter 102 is controlled based on the determination result.

  By the way, in the elevator control device as described above, when the load detection switch 113 breaks down or the load signal transmission line is disconnected, the inverter current control device 112 cannot recognize the load signal and determines the regeneration direction of the elevator. become unable.

  Therefore, in the conventional apparatus, the DC voltage power source 101 such as a battery power source having a large DC voltage capacity is used so that it can sufficiently handle not only the operation in the regeneration direction but also the operation in the power running direction. There is a problem that cannot cope with energy saving.

  The present invention has been made in view of the above circumstances. Even when the load signal cannot be recognized, it is possible to determine a reliable traveling direction and to land on the destination floor using a small DC voltage output capacity at the time of power failure or failure. It is an object of the present invention to provide an elevator control device.

In order to solve the above problems, an elevator control device according to the present invention includes an inverter that converts a DC output voltage of a DC voltage power source that is selectively used at the time of a power failure or failure into a predetermined AC power, and supplies the AC power to the motor. Speed control means for obtaining and outputting a torque command value corresponding to the deviation between the speed command value of the motor set in the command device and the detected speed of the motor, and detecting a load signal of the car, A load signal calculating means for converting the torque compensation value to a corresponding torque compensation value, and a torque command determining means for calculating a total torque command value of the torque command value output from the speed control means and the torque compensation value converted by the load signal calculating means. And an inverter that controls the inverter based on the real-time command value of the motor current obtained based on the total torque command value and the detected current of the inverter. When the specified torque value is set in advance with the barter current control means and the total torque command value calculated by the torque command determination means exceeds the specified torque value, the traveling direction of the car is determined as the power running direction, Traveling direction reversing means for sending an instruction to change the direction to the regeneration direction to the speed command device is provided.

  In the present invention, the total torque command value of the torque command value of the speed control device and the torque compensation value corresponding to the load signal detected by the load detection switch is obtained by the configuration as described above. If the total torque command value exceeds the specified torque value by the traveling direction reversing means, the elevator determines that the elevator is operating in the power running direction and changes the traveling direction to the regenerative direction. Therefore, by using the power energy generated during regenerative operation, control the operation so that the elevator is landed on the destination floor using the DC output voltage of the DC voltage power supply with a relatively small capacity. Is possible.

  The detected speed of the motor is compared with the motor speed command value of the speed command device. If the detected speed is opposite to the motor speed command value and the detected speed exceeds the specified speed value, the running direction is the power running direction. If the operating direction is changed to the regenerative direction, or if the specified inverter current value is set in advance and the detected current value of the inverter exceeds the specified inverter current value, it is determined that the elevator is traveling in the power running direction. The driving direction can be changed to the regenerative direction, and when the vehicle is traveling in the power running direction by various means, the driving direction can be changed to the regenerative direction to reduce the DC voltage capacity of the DC voltage power supply. it can.

  Even if the load signal cannot be recognized, the present invention determines the reliable traveling direction, changes to the regenerative direction in the power running direction at the time of a power failure or failure, and uses a small DC voltage output capacity to reach the destination floor. An elevator control device for landing can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a first embodiment of an elevator control apparatus according to the present invention.

  This elevator control device is configured to extract the drive power of the elevator from a commercial AC power supply (not shown) during normal operation. Here, the operation is to land on the destination floor using a battery power source or the like at the time of a power failure or failure. It is the structure which performs control.

  This elevator control device includes an elevator that lifts and lowers a car, a drive power supply system that has a battery power source that generates necessary AC power and supplies it as drive power for the elevator, and an elevator operation control system. .

  The elevator is suspended at both ends of a motor 1 that rotates by receiving AC power from a drive power supply system, a sheave 2 that rotates by receiving the rotational driving force of the motor 1, and a rope 3 wound around the sheave 2. It consists of a lowered car 4, a counterweight 5, etc.

  The drive power supply system converts a DC voltage power source 6 such as a battery power source, which is a standby power source prepared in the event of a power failure or failure, and a DC voltage output from the DC voltage power source 6 into predetermined AC power. An inverter 7 for output, an inverter current detector 8 provided on the output side of the inverter 7 for detecting an inverter current, a real-time command value of the motor current obtained based on a torque command value described later, and a current detector 8 And an inverter current control device 9 for controlling the constituent elements of the inverter 7 based on the detected inverter current.

  In the elevator operation control system, a speed command value (speed pattern) is set in advance, and when an activation command is received from an elevator control panel (not shown), the speed command device 11 that outputs the speed command value of the motor 1 and the speed of the motor 5 are detected. A speed detector 12 that compares the motor speed command value from the speed command device 11 with the detected speed of the speed detector 12 and calculates and outputs a torque command value that eliminates the deviation. Further, a load detection switch 14, a load signal calculation device 15, a torque command determination device 16 and a traveling direction reversing device 17 are provided as in the conventional case.

  The load detection switch 14 includes, for example, a plurality of switch elements that are selectively turned on in accordance with the load weight of the car 4. For example, the load weight of the car 4 is lighter than a required load weight (balance weight). The switch element 14 (1) that operates at any time, the switch element 14 (2) that operates at an intermediate weight within a predetermined range including a required loading weight, and the switch element 14 (3) that operates at a weight heavier than the intermediate weight. Thus, the load signal due to the ON operation of these switches is sent to the load signal calculation device 15. The load signal calculation device 15 converts a load signal detected by the load detection switches 14 (1) to 14 (3) into a torque compensation value and outputs it, for example, as shown in FIG. The load signals detected at 14 (1), 14 (2), and 14 (3) are converted into torque compensation values (rotational power) of −10, 0, and +10 and output.

  The torque command determination device 16 has a function of calculating and outputting a total torque command value of the torque command value from the speed control device 13 and the torque compensation value from the load signal calculation device 15. When the predetermined torque value is set in advance and the total torque command value from the torque command determination device 16 is larger than the specified torque value, the traveling direction reversing device 17 determines that the traveling direction of the elevator is the power running direction, It has a function of sending an instruction to change the operation direction to the regeneration direction to the speed command device 11.

  Next, the operation of the control device as described above will be described.

  Now, at the time of a power failure or failure of an elevator facility, a drive power supply system including a DC voltage power source 6 such as a battery power source is selected based on a control instruction from an elevator control panel (not shown) or the like. As a result, the DC voltage of the DC voltage power supply 6 is sent to the inverter 7, where the drive power is supplied to the motor 1 under the inverter element control by the inverter current control device 9 to rotate it.

  At this time, the speed control device 13 outputs a torque command value such that the detected speed of the speed detector 12 follows the motor speed command value of the speed command device 11, and the load signal calculation device 15 receives the load detection switch 14. A torque compensation value based on the load signal resulting from the ON operation of any one of (1), 14 (2), and 14 (3) is calculated and output and sent to the torque command determination device 16.

  The torque command determination device 16 determines the total torque command value of the torque compensation value and the torque command value and sends it to the traveling direction reversing device 17. The traveling direction reversing device 17 compares the total torque command value from the torque command determining device 16 with the specified torque value, and determines that the traveling direction of the elevator is the power running direction when the total torque command value is larger than the specified torque value. Then, a signal for changing the operation direction to the regeneration direction is sent to the speed command device 11.

  FIG. 3 is a waveform diagram illustrating the relationship between the speed and torque when the elevator starts from a power failure or failure. That is, FIG. 5A is a waveform diagram showing a speed command value output from the speed command device 11, and the waveform from the zero value to the minus (−) side is the speed command value in the power running direction, and from the zero value to the plus ( The waveform in the (+) direction represents the speed command value in the regeneration direction.

  That is, when a speed command value as shown in FIG. 9A is output from the speed command device 11, a speed feedback signal as shown in FIG. That is, the speed control device 13 sends a torque command value such that the detected speed of the speed detector 12 follows the motor speed command value of the speed command device 11 to the inverter current control device 9 to drive-control the motor 1.

  In this state, at the time of a power failure or failure of the elevator equipment, the torque command determination device 16 determines from the load detection signal detected by the load detection switch 14 that the traveling direction is traveling downward, but the speed control device 13. When the total torque command value of the torque command value and the torque compensation value of the load signal calculation device 15 exceeds the specified torque value as shown in FIG. It is determined that the vehicle is traveling in the power running direction, and an instruction to temporarily decelerate and stop is issued to the speed command device 11, the operation direction is changed from the speed command device 11, and an electric motor speed command value that travels in the regeneration direction is output. And sent to the inverter current control device 4.

  Therefore, according to the above embodiment, the total torque command value of the torque command value of the speed control device 13 and the torque compensation value corresponding to the load signal detected by the load detection switch 14 is extracted, and this total torque is extracted. The command value is compared with the specified torque value. If the total torque command value exceeds the specified torque value in the traveling direction reversing device 17, it is determined that the elevator is operating in the power running direction, and the traveling direction is changed to the regenerative direction. Since the speed command device 11 is instructed to do so, it is possible to control the operation so that the elevator is landed on the destination floor using the power energy generated during the regenerative operation, and thus the DC output of the DC voltage power supply 6 having a relatively small capacity Even if the voltage is applied, the operation of the elevator can be reliably controlled, and thus the DC voltage power source 6 can be reduced in size or energy saving.

(Second Embodiment)
FIG. 4 is a block diagram showing a second embodiment of the elevator control apparatus according to the present invention. In the figure, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be given in the description of FIG.

  This elevator control device detects a speed command device 11 that outputs a speed command value of the electric motor 1 and a speed of the electric motor 1 in addition to a driving power supply system including components 6 to 9 that generate and output required AC power. A speed detector 12, a speed control device 13 that calculates and outputs a torque command value that eliminates a deviation between the motor speed command value and the detected speed, a load detection switch 14, a load signal calculation device 15, and the like. The point is the same structure as FIG.

  In this elevator control device, the difference is that the detected speed of the speed detector 12 and the motor speed command value of the speed command device 11 are immediately after the start of the rescue operation after the car 4 is stopped due to a power failure or failure of the elevator equipment. When the detected speed is in the direction opposite to the motor speed command value, a speed detection determining device 21 that determines that the load signal is not balanced is set in advance with a specified speed value, and the detected speed is the motor speed. There is provided a traveling direction reversing device 22 that determines that the traveling direction is the power running direction when the detected speed exceeds the specified speed value in the direction opposite to the command value and changes the driving direction to the regenerative direction.

  FIG. 5 is a diagram showing operation waveforms at the start after a power failure of the elevator equipment. Now, after the car 4 is stopped due to a power failure in the elevator equipment, immediately after the start of the rescue operation, the speed command device 11 outputs a speed command value as shown in FIG. When the detection speed in the opposite direction is detected from the loader 12 as shown in FIG. 5B, the result is influenced by the torque compensation value based on the load signal detected by the load detection switch 14. It is determined that the balanced state is not taken, and the traveling direction reversing device 22 is notified. In this traveling direction reversing device 22, the speed detected by the speed detector 12 at the start after the car stops is compared with the motor speed command value of the speed command device 11, and the detected speed of the speed detector 12 is used as the speed command. If the detected speed exceeds the specified speed value as shown in FIG. 5C, the load signal is not balanced and the direction of travel is determined. An instruction to change to the regenerative direction is issued, and a torque command value as shown in FIG. 5D is output from the speed control unit 13 via the speed command device 11 to control the operation of the elevator in the regenerative direction.

  Therefore, according to the embodiment as described above, when the detected speed of the speed detector 12 is opposite to the motor speed command value of the speed command device 11 and the detected speed exceeds the specified speed value, the load signal It is judged that the balance is not balanced, and the traveling direction is changed to the regenerative direction. Therefore, it is possible to control the operation so that the elevator is landed on the destination floor using the electric power energy generated during the regenerative operation. Even with the DC output voltage of the capacity DC voltage power supply 6, the elevator can be reliably operated and controlled, and as a result, the DC voltage power supply 6 can be reduced in size or energy saving.

(Third embodiment)
FIG. 6 is a block diagram showing a third embodiment of the elevator control apparatus according to the present invention. In the figure, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and details will be given in the description of FIG.

  The elevator control device includes a drive power supply system including a DC voltage power supply 6, an inverter 7, an inverter current detector 8, an inverter current control device 9 and the like, a speed command device 11 that outputs a speed command value of the motor 1, an electric motor A speed detector 12 for detecting the speed of 1, a speed control device 13 for calculating and outputting a torque command value that eliminates a deviation between the motor speed command value and the detected speed, a load detection switch 14, and a load signal calculation device 15. The point where the elevator control system which consists of etc. is provided is the same as FIG.1 and FIG.4.

  In this elevator control device, the difference is that the specified inverter current value is set in advance, and when the inverter detected current value detected by the inverter current detector 8 exceeds the specified inverter current value, the elevator travels in the power running direction. When receiving a determination signal indicating that the vehicle is traveling in the power running direction from the inverter current detection determination device 31 and a speed command device, an instruction to change the driving direction in the regeneration direction is received. 11 is provided with a travel direction reversing device 32 that feeds the motor 11.

  Therefore, according to such an embodiment, the inverter current detection determination device 31 takes in the inverter detection current value from the inverter current detector 8, compares the inverter detection current value with the specified inverter current value, and determines the inverter detection current value. When the specified inverter current value is exceeded, it is determined that the vehicle is traveling in the power running direction, and the running direction reversing device 32 performs control to change the direction from power running operation to regenerative operation. Energy can be used to control the landing of the elevator on the destination floor, and therefore the elevator can be reliably operated at the required floor in the event of a power failure or failure while suppressing the DC output voltage capacity of the DC voltage power supply 1. .

(Fourth embodiment)
FIG. 7 is a block diagram showing a fourth embodiment of the elevator control apparatus according to the present invention. In the figure, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and details will be given in the description of FIG.

  Also in this elevator control device, a speed command device 11 that outputs a speed command value of the electric motor 1 in addition to a drive power supply system including a DC voltage power source 6, an inverter 7, an inverter current detector 8, an inverter current control device 9, and the like. A speed detector 12 that detects the speed of the electric motor 1, a speed control device 13 that calculates and outputs a torque command value that eliminates the deviation between the motor speed command value and the detected speed, a load detection switch 14, and a load signal calculation device The elevator control system comprising 15 etc. is provided in exactly the same way as in FIGS.

  In this elevator control device, particularly different points are a voltage detector 41 for detecting the DC voltage of the DC voltage power source 6, a specified voltage value set in advance, and a detected voltage value and a specified voltage detected by the voltage detector 41. DC voltage that compares the value and pays attention to the fact that the DC output voltage of DC voltage power supply 1 drops during power running, and determines that the elevator is traveling in the power running direction when the detected voltage value falls below the specified voltage value When the detection determination device 42 and the determination signal indicating that the vehicle is traveling in the power running direction are received from the DC voltage detection determination device 42, the traveling direction inversion is sent to the speed command device 11 to send an instruction to change the driving direction to the regeneration direction. A device 43 is provided.

  Therefore, according to the embodiment as described above, it is determined that the elevator is traveling in the power running direction when the detected voltage value output from the DC voltage power source 1 is lower than the specified voltage value, and regeneration is performed from the power running operation. Since the direction is changed to operation, the elevator can be reliably operated and controlled even with a DC output voltage of the DC voltage power supply 6 having a relatively small capacity, and thus the DC voltage power supply 6 can be reduced in size or energy-saving.

(Fifth embodiment)
FIG. 8 is a block diagram showing a fifth embodiment of the elevator control apparatus according to the present invention. In the figure, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and details will be given in the description of FIG.

  Also in this elevator control device, a speed command device 11 that outputs a speed command value of the electric motor 1 in addition to a drive power supply system including a DC voltage power source 6, an inverter, an inverter current detector 8, an inverter current control device 9, and the like, A speed detector 12 that detects the speed of the electric motor 1, a speed control device 13 that calculates and outputs a torque command value that eliminates the deviation between the motor speed command value and the detected speed, a load detection switch 14, and a load signal calculation device The point that an elevator control system consisting of 15 etc. is provided is the same as in FIGS.

  In this elevator control device, the difference is that the car position detector 51 for detecting the car position of the car 4 and a predetermined torque value are set in advance, and the total torque command values of the speed control device 13 and the load signal calculation device 15 are set. Torque command determination device 16 that determines that the vehicle is traveling in the power running direction and a determination signal that the vehicle is traveling in the power running direction from this torque command determination device 16 When the direction is changed from driving to regenerative operation, the distance from the current car position from the car position detector 51 to the target floor to be landed and the current car position from the car position detector 51 when powering the car is landing from the current car position. A traveling direction reversing device 5 that compares the distance to the destination floor to be transmitted and sends an instruction to the speed command device 11 for a power running operation or a regenerative operation that should be performed in a short distance direction. Door is provided.

  Therefore, according to such an embodiment, at the time of a power failure or failure, it is determined whether the current traveling direction of the elevator is a power running direction or a regenerative direction, and if it is a power running direction, it is changed to the regenerative direction in principle. When driving in the power running direction is very close to the floor where the current car position and the floor that should be landed due to failure, etc., the power running operation is continued, so the elevator can be quickly controlled to the floor where it is required, The DC voltage output capacity of the DC voltage power supply 6 can be reduced.

(Sixth embodiment)
FIG. 9 is a block diagram showing a sixth embodiment of the elevator control apparatus according to the present invention.

  Since this elevator control device has substantially the same configuration as that in FIG. 1, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and will be described in detail in FIG. 1 is set, and when the total torque command value of the speed control device 13 and the load signal calculation device 15 exceeds the first specified torque value, it is determined that the vehicle is traveling in the power running direction. 16 and a traveling direction reversing device 17 that gives an instruction to change the direction from the power running operation to the regenerative operation when a determination signal indicating that the vehicle is traveling in the power running direction is received from the torque command determination device 16, and a load abnormality is estimated in advance. When a second specified torque value of an allowable size is set and the total torque command value output from the torque command determination device 16 exceeds the second specified torque value, the load is abnormal. A load abnormality detecting device 61 for notifying is provided.

  Therefore, according to the embodiment as described above, the load abnormality detection device 61 notifies that the load is abnormal when the total torque command value from the torque command determination device 16 exceeds the second specified torque value. Therefore, overcurrent protection and abnormal running of the motor can be prevented beforehand.

(Seventh embodiment)
FIG. 10 is a block diagram showing a seventh embodiment of the elevator control apparatus according to the present invention.

  Since this elevator control device has substantially the same configuration as that in FIG. 1, the same or equivalent components as in FIG. 1 are denoted by the same reference numerals, and the details will be left to the description of FIG. When the direction reversal detector 71 for detecting the traveling direction of the elevator on the output side of the reversing unit 17 and the direction reversal signal installed in the car 8 and reversing the traveling direction from the direction reversal detector 71 are displayed or Guiding means 72 for notifying that the traveling direction of the car is reversed by voice is provided.

  According to such an embodiment, since appropriate guidance is output in the car when the traveling direction is reversed, the anxiety of passengers in the car can be resolved and the safety of the passengers can be ensured.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  In addition, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Further, each of the above embodiments includes various higher-level and lower-level inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, the omitted part is used when the extracted invention is implemented. Is appropriately supplemented by well-known conventional techniques.

The block diagram which shows one Embodiment of the elevator control apparatus which concerns on this invention. The figure explaining the relationship between the load detection switch which detects the load of a passenger car, and a torque compensation value. The wave form diagram explaining the relationship between the speed at the time of the elevator start by a power failure, and a torque. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The wave form diagram explaining the relationship between the speed at the time of the elevator start by a power failure, and a torque. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The block diagram which shows other embodiment of the elevator control apparatus which concerns on this invention. The block diagram of the conventional elevator control apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electric motor, 2 ... Sheave, 3 ... Rope, 4 ... Riding car, 5 ... Counterweight, 6 ... DC voltage power supply, 7 ... Inverter, 8 ... Inverter current detector, 9 ... Inverter current control apparatus, 11 ... Speed command Device: 12 ... Speed detector, 13 ... Speed control device, 14 ... Load detection switch, 15 ... Load signal calculation device, 16 ... Torque command determination device, 17, 22, 32, 43, 52 ... Travel direction reversing device, 21 DESCRIPTION OF SYMBOLS ... Speed detection judgment device, 31 ... Inverter current detection judgment device, 42 ... DC voltage detection judgment device, 51 ... Car position detector, 61 ... Load abnormality detection device, 71 ... Travel direction inversion detection device, 72 ... Guide device.

Claims (7)

In the elevator control device that controls the car at the time of power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
Torque command determination means for calculating a total torque command value between the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means;
Inverter current control means for controlling the inverter based on the real-time command value of the motor current obtained based on the total torque command value and the detected current of the inverter;
When the specified torque value is set in advance and the total torque command value calculated by the torque command determination means exceeds the specified torque value, the traveling direction of the car is determined as the power running direction and the traveling direction is changed to the regenerative direction. Traveling direction reversing means for sending an instruction to the speed command device,
An elevator control device that reduces a direct-current output voltage capacity of a direct-current voltage power source used at the time of a power failure or failure. In the elevator control device that controls the car at the time of power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
Based on the real-time command value of the motor current obtained based on the total torque command value of the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means, and the detected current of the inverter Inverter current control means for controlling the inverter,
Speed detection determination means for comparing the detected speed of the motor with the motor speed command value of the speed command device and determining that the load signal is not balanced when the detected speed is in a direction opposite to the motor speed command value; ,
If the specified speed value is set in advance, the detected speed is in the direction opposite to the motor speed command value, and the detected speed exceeds the specified speed value, the traveling direction is determined as the power running direction and the driving direction is changed to the regenerative direction. Traveling direction reversing means for sending an instruction to the speed command device,
An elevator control device that reduces a direct-current output voltage capacity of a direct-current voltage power source used at the time of a power failure or failure. In the elevator control device that controls the car at the time of power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
Based on the real-time command value of the motor current obtained based on the total torque command value of the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means, and the detected current of the inverter Inverter current control means for controlling the inverter;
When a specified inverter current value is set in advance and the detected current value of the inverter exceeds the specified inverter current value, an inverter current detection determining means for determining that the elevator is traveling in the power running direction, and this inverter current detection determining means When receiving a determination signal that the vehicle is traveling in the power running direction, the vehicle includes a traveling direction reversing unit that sends an instruction to change the driving direction to the regeneration direction to the speed command device,
An elevator control device that reduces a direct-current output voltage capacity of a direct-current voltage power source used at the time of a power failure or failure. In the elevator control device that controls the car in the event of a power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
Based on the real-time command value of the motor current obtained based on the total torque command value of the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means, and the detected current of the inverter Inverter current control means for controlling the inverter;
A voltage detector for detecting a DC voltage of the DC voltage power supply;
When the specified voltage value is set in advance, the detected voltage value detected by the voltage detector is compared with the specified voltage value, and the elevator is running in the power running direction when the detected voltage value falls below the specified voltage value DC voltage detection judgment means for judging,
When a determination signal indicating that the vehicle is traveling in the power running direction is received from the DC voltage detection determination unit, the vehicle includes a traveling direction reversing unit that sends an instruction to change the driving direction to the regenerative direction to the speed command device,
An elevator control device that reduces a direct-current output voltage capacity of a direct-current voltage power source used at the time of a power failure or failure. In the elevator control device that controls the car in the event of a power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
When a predetermined torque value is set in advance and a total torque command value calculated from the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means exceeds the specified torque value, Torque command determination means for determining that the vehicle is running in the power running direction;
Inverter current control means for controlling the inverter based on the real-time command value of the motor current obtained based on the total torque command value calculated by the torque command determination means and the detected current of the inverter;
Car position detecting means for detecting a car position of the car;
Based on the car position detected by the car position detecting means and the distance to the destination floor to be landed, when it is determined that the distance is closer to the driving direction than the power running direction, the driving direction is set to the regenerating direction. A traveling direction reversing means for sending an instruction to change to the speed command device;
An elevator control device that reduces a direct-current output voltage capacity of a direct-current voltage power source used at the time of a power failure or failure. In the elevator control device that controls the car in the event of a power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
A first specified torque value is set in advance, and a total torque command value calculated from a torque command value output from the speed control means and a torque compensation value converted by the load signal calculation means is the first specified torque. Torque command determining means for determining that the vehicle is traveling in the power running direction when the value is exceeded;
Inverter current control means for controlling the inverter based on the real-time command value of the motor current obtained based on the total torque command value calculated by the torque command determination means and the detected current of the inverter;
A traveling direction reversing means for sending an instruction to change the direction from a power running operation to a regenerative operation to the speed command device when receiving a determination signal indicating that the vehicle is traveling in the power running direction from the torque command determination means;
A load abnormality detecting means for notifying that a load abnormality is detected when a second prescribed torque value having a magnitude that can be presumed to be a load abnormality is set in advance and the total torque command value exceeds the second prescribed torque value; An elevator control device comprising: In the elevator control device that controls the car at the time of power failure or failure, the car and the counterweight are suspended at both ends of the rope wound around the rotating shaft system of the electric motor.
An inverter that converts a DC output voltage of a DC voltage power source that is selectively used in the event of a power failure or failure into predetermined AC power and supplies the AC to the motor;
Speed control means for obtaining and outputting a torque command value corresponding to a deviation between the speed command value of the motor set in the speed command device and the detected speed of the motor;
A load signal calculation means for detecting a load signal of the car and converting it to a torque compensation value corresponding to the load signal;
When a predetermined torque value is set in advance and a total torque command value calculated from the torque command value output from the speed control means and the torque compensation value converted by the load signal calculation means exceeds the specified torque value, Torque command determination means for determining that the vehicle is running in the power running direction;
Inverter current control means for controlling the inverter based on the real-time command value of the motor current obtained based on the total torque command value calculated by the torque command determination means and the detected current of the inverter;
A traveling direction reversing means for sending an instruction to change the direction from a power running operation to a regenerative operation to the speed command device when receiving a determination signal indicating that the vehicle is traveling in the power running direction from the torque command determination means;
A reversing direction detecting means for detecting reversal of the traveling direction by the traveling direction reversing means, and a guidance device that is installed in the car and guides the passenger to reverse when receiving a reversal detection signal from the reversing direction detecting means. An elevator control device comprising:

Images