JP2013184750A - Device of controlling elevator of hybrid drive type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently utilize regenerative energy of an elevator.SOLUTION: A device of controlling an elevator of a hybrid drive type includes: an electricity storage device that stores electricity generated in an electricity supply line to a motor for driving a car when the car is operated in a regenerative mode, as electricity for driving the car and for running equipment which is always required to run by electricity for operating an elevator; and a controlling means of carrying out control so that the electricity stored in the electricity storage device is supplied to the electricity supply line and to the equipment which is always required to run, in a state where electricity is not supplied to the electricity supply line from a commercial power supply.

Description

  Embodiments described herein relate generally to a hybrid drive type elevator control apparatus that drives an elevator car using regenerative energy.

  Generally, in an elevator, a car and a counterweight are suspended from both ends of a rope wound around a rotating shaft of an electric motor (winding machine), and the car hangs in a direction opposite to the counterweight through the rope by the rotation of the electric motor. It moves up and down.

  Here, for example, when the car moves downward in the hoistway, if the load of the car at that time is heavier than the counterweight, no power is required, so the motor functions as a generator, and the regeneration Energy is generated. Further, when the car moves upward, if the load on the car at that time is lighter than the counterweight, no power is required, so regenerative energy is generated.

  Driving the car without requiring power in this way is called “regenerative operation”, and the direction in which the car moves at that time is called “regenerative direction”. On the other hand, an operation that requires power is called “powering operation”, and the direction in which the car moves at that time is called “powering direction”.

JP 2004-99309 A

  By the way, with the recent demand for power saving, the power generated during the regenerative operation, that is, regenerative energy is stored in a power storage device such as a large-capacity capacitor, and the regenerative energy stored in the power storage device during the next powering operation. A hybrid drive type elevator that uses a car to drive a car is considered.

  This regenerative energy is supplied to an electric motor for driving the car in the power running operation and used as electric power for assisting the power running operation. On the other hand, this regenerative energy is not used as standby power that is used to supply equipment that needs to be operated at all times, such as buttons on halls and hall indicators on each floor. The current situation is that power is obtained through a power supply line and supplied to these devices. Therefore, even when the car is not driven, the standby power described above is obtained from the customer power source, and none of the regenerative energy is used as standby power.

  The problem to be solved by the present invention is to provide a control device for a hybrid drive type elevator that makes it possible to fully utilize regenerative energy.

  According to the embodiment, the control device for the hybrid drive type elevator includes the electric power generated in the electric power supply line of the electric motor for driving the car during the regenerative operation of the car, the electric power for driving the car, and the elevator operation. Power storage device that stores power that is required to operate equipment that needs to be operated at all times, and power that is stored in the power storage device without supplying power from the commercial power supply to the power supply line And a control means for controlling the supply to equipment that needs to be operated continuously.

The figure which shows the structural example of the control apparatus of the hybrid drive type elevator in 1st Embodiment. The figure which shows the structure of the elevator control apparatus of the hybrid drive type elevator in 1st Embodiment. The figure which shows an example of the external appearance of the hall indicator and hall call button of the hybrid drive type elevator in 1st Embodiment. The flowchart which shows the flow of the operation control of the hybrid drive type elevator in 1st Embodiment. The figure which shows the structure of the elevator control apparatus of the hybrid drive type elevator in 2nd Embodiment. The flowchart which shows the flow of operation control of the hybrid drive type elevator in 2nd Embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
(First embodiment)
First, the first embodiment will be described.
In this embodiment, the electric power stored in the power storage device in the hybrid drive type elevator is supplied not only to the inverter for driving the car, but also to equipment that needs to be constantly operated by electric power for elevator operation, such as landing equipment. Thus, the power stored in the power storage device can be used as so-called standby power, and the power that is the regenerative energy stored in the power storage device is effectively used. In the present embodiment, the landing device refers to a landing destination floor registration device or a hall indicator.

FIG. 1 is a diagram illustrating a configuration of a control device for a hybrid drive elevator according to the first embodiment.
The elevator 10 is suspended from both ends of an electric motor 11 that rotates by receiving predetermined driving electric power, a sheave 12 that rotates by being attached to a rotating shaft of the electric motor 11, and a rope 13 that is wound around the sheave 12. And a counterweight (balance weight) 15 and the like.

  Further, as a driving system for the car 14, a commercial power supply 16 that is a customer power supply, a rectifier 17 that converts an AC voltage of the commercial power supply 16 into a DC voltage, and smoothing capacitors 18a and 18b that smooth the ripple of the DC voltage. And an inverter 19 that converts a DC voltage into an AC voltage having a variable voltage and a variable frequency, and an inverter current detection device 20 that detects a current of the electric motor 11 supplied by the inverter 19.

  The commercial power supply 16 is a three-phase power supply. The elevator includes a rectifier 17 for full-wave rectification of the AC voltage generated by the three-phase power source. In the subsequent stage of the rectifier 17 as viewed from the rectifier 17, smoothing capacitors 18a and 18b are provided for absorbing the ripple and smoothing it to a direct current. As a characteristic element in the present embodiment, an open / close switch 54 is provided at the rear stage of the smoothing capacitor 18a and the connection part of the switch 53 as viewed from the rectifier 17 on the high potential side of the power supply line. Further, a smoothing capacitor 18b is provided at the subsequent stage of the switch 54 as viewed from the rectifier 17.

When the switch 54 is short-circuited, the DC voltage smoothed by the smoothing capacitors 18a and 18b is applied to the inverter 19, converted into an AC voltage having a predetermined frequency, and supplied to the motor 11 as drive power. The electric power from 19 is also supplied to equipment such as landing equipment that needs to be constantly operated by electric power for elevator operation.
On the other hand, when the switch 54 is opened, the electric power from the commercial power supply 16 is not supplied to the inverter 19 or the electric motor 11 and is not supplied to equipment that needs to be always operated by electric power for the elevator operation.

  The electric motor 11 is rotationally driven by the power supply as described above, and the sheave 12 is rotated accordingly, and the car 14 and the counterweight 15 hang around the hoistway through the rope 13 wound around the electric motor 11. Move up and down.

The elevator 10 also includes an elevator control device 21 for controlling the operating speed of the car 14 and the like.
FIG. 2 shows the configuration of the elevator control device 21. The elevator control device 21 includes a speed command unit 22, a speed detection unit 23, a speed control unit 24, a load detection switch unit 25, a load signal calculation unit 26, a torque command determination unit 27, an inverter current control unit 28, and an operation command unit. 29.

  The operation command unit 29 issues an operation command for the electric motor 11 in response to call registration. The speed command unit 22 receives an operation command from the operation command unit 29 and outputs a speed command value. The speed detector 23 detects the current speed of the electric motor 11. The speed control unit 24 obtains a deviation between the speed command value and the speed detection value, and outputs a torque command that eliminates the deviation.

  The load detection switch unit 25 is a switch for detecting the load of the car 14, and includes, for example, a plurality of switches that are selectively turned on according to the load value. The load signal calculation unit 26 calculates a torque compensation value based on the load signal output from the load detection switch unit 25.

  Specifically, it is assumed that the load detection switch unit 25 includes three switches a, b, and c. The switch a is turned on when the load value of the car 14 is heavier than a predetermined load weight (weight that counterbalances the counterweight 15), and the switch b is turned on when the load value of the car 14 is a predetermined load weight, The switch c is turned on when the load value of the car 14 is lighter than the predetermined loading weight. The load signal calculation unit 26 outputs, for example, torque compensation values of “−10”, “0”, and “+10” for the ON signals of these switches a, b, and c.

  The torque command determination unit 27 has a final torque command value obtained by adding the torque command value output from the speed control unit 24 and the torque compensation value output from the load signal calculation unit 26 within an allowable range. Determine whether or not. As a result, if the torque command value is outside the allowable range, a limiter is applied so as to be within the allowable range.

  Based on the current value detected by the inverter current detection device 20 and the torque command value output from the torque command determination unit 27, the inverter current control unit 28 controls the current flowing through the motor 11 in accordance with the torque command value. .

In addition to the configuration described above, the elevator 10 further includes a power storage device 30, a charge / discharge circuit 31, and a power storage control device 32 as a hybrid drive system.
The power storage device 30 is a power supply means in the hybrid drive type elevator, and includes, for example, a secondary battery such as a nickel metal hydride battery, a lithium ion battery, or a lithium polymer battery, a large capacity capacitor such as an electric double layer capacitor, and the like. Saving energy by storing regenerative energy (electric power) generated in the power supply line from time to time and discharging the regenerative energy (electric power) stored as described above during the next powering operation or when the switch 54 is opened to the power supply line It aims to make it easier.

  The charge / discharge circuit 31 is a circuit for switching charge / discharge of the power storage device 30. The charging / discharging circuit 31 is connected to a charging switching element 33 and a discharging switching element 34 which are connected in parallel between DC buses which are power supply lines to the inverter 19, and a common connection portion between these switching elements 33 and 34. And a DC reactor 35 having a function of smoothing DC power.

  The elevator control device 21 has a power supply circuit 60. The power supply circuit 60 supplies electric power from the inverter 19 or the power storage device 30 to each part in the elevator control device 21, and in-car devices such as a car operation panel of the car 14 and in-car lighting via a tail cord, And supply to car control equipment.

  As a characteristic element in the present embodiment, a switch 53 is provided between the charge / discharge circuit 31 and the power supply line. The switch 53 is a switch that can be switched to the customer power source side or the elevator equipment side. This switch 53 is switched to the elevator device side when power is supplied from the power storage device 30 to the inverter 19, the elevator control device 21, etc., and the customer is charged when charging the power from the commercial power supply 16 to the power storage device 30. Switching to the power supply side.

  When the switch 53 is switched to the customer power supply side with the switch 54 on the power supply line side open, the smoothing capacitor 18a on the collector side of the switching element 33 and the high potential side of the power supply line. Are electrically connected, and the emitter side of the switching element 34 and the low potential side of the power supply line are electrically connected, so that the commercial power supply 16 and the power storage device 30 are electrically connected, The power storage device 30 and the elevator control device 21 are not electrically connected.

  On the other hand, when the switch 53 is switched to the elevator device side with the switch 54 on the power supply line side opened, there is no electrical connection between the collector side of the switching element 33 and the low potential side of the power supply line. Are connected, and the inverter 19 on the emitter side of the switching element 34 and the inverter 19 on the high potential side of the power supply line are electrically connected, the power storage device 30 and the inverter 19 are electrically connected, and the power storage device 30 And the elevator control device 21 are electrically connected, while the commercial power supply 16 and the power storage device 30 are not electrically connected.

  In the present embodiment, the switch 54 on the power supply line side is opened and the switch 53 is switched to the elevator device side except when the stored power of the power storage device 30 is insufficient, and in this state, the regenerative operation is performed. The electric power generated at the time can be stored in the power storage device 30, and the stored power can be supplied to the inverter 19, the elevator control device 21, the landing destination floor registration device 71, and the hall indicator 72.

  The power storage control device 32 monitors the voltage between the DC buses, that is, the voltages of the smoothing capacitors 18a and 18b, determines whether the operation state of the car 14 is the regenerative operation or the power running operation based on the voltage value, and the operation state Accordingly, the charge / discharge circuit 31 is controlled to charge / discharge the power storage device 30.

  Specifically, the power storage control device 32 drives the voltage detector 41 that detects the DC bus voltage (the voltage of the smoothing capacitor 18 a or the voltage of the smoothing capacitor 18 b), and the charge / discharge circuit 31 to the power storage device 30. A charge / discharge control unit 42 that controls charging / discharging, a voltage detection unit 43 that detects the voltage of the power storage device 30, and a voltage change monitoring unit 44 that monitors the voltage change of the power storage device 30 detected by the voltage detection unit 43, A voltage command unit 45 for issuing a voltage command, a current detection unit 46 for detecting a current flowing into the power storage device 30, and the like.

  In a state where the switch 53 is switched to the elevator equipment side and the switch 54 is short-circuited, the three-phase AC voltage supplied from the commercial power supply 16 is converted into a DC voltage by the rectifier 17 and then the inverter 19 It is converted into a desired AC voltage and supplied to the electric motor 11. At this time, when the car 14 is in a regenerative operation, the regenerative energy is returned from the inverter 19 to the input terminal side, so that the DC bus voltage increases.

  In a normal elevator, when the DC bus voltage becomes equal to or higher than a certain value, the switching element 51 provided on the input terminal side of the inverter 19 is controlled and the regenerative resistor 52 heats the energy. On the other hand, the hybrid drive elevator includes a power storage device 30 in order to effectively use the regenerative energy.

  Here, the operation of charging and discharging the regenerative energy in the hybrid drive elevator including the power storage device 30 will be briefly described.

(A) Regenerative energy charging operation As described above, during the regenerative operation of the car 14 with the switch 54 short-circuited, the regenerative energy is returned from the inverter 19 to the input terminal side, so that the smoothing capacitors 18a, 18b Thus, the regenerative energy is accumulated, and the voltage between the DC buses which are power supply lines to the inverter 19 gradually increases. The voltage increase at this time is detected by the voltage detection unit 41 in the power storage control device 32.

  Further, as described above, during the regenerative operation of the car 14 in the state where the switch 53 is switched to the elevator equipment side and the switch 54 is opened, the regenerative energy is returned from the inverter 19, so that the smoothing capacitor 18b Thus, the regenerative energy is accumulated, and the voltage between the DC buses which are power supply lines to the inverter 19 gradually increases. The voltage increase at this time is detected by the voltage detection unit 41 in the power storage control device 32.

  Here, in the power storage control device 32, when the voltage between the DC buses becomes equal to or higher than a preset reference value, the voltage command unit 45 reduces the voltage until the voltage is suitable for charging the power storage device 30, and then performs charge / discharge. The charging switching element 33 in the circuit 31 is turned on to charge the power storage device 30.

  The voltage change of the power storage device 30 at this time is monitored by the voltage change monitoring unit 44 through the voltage detection unit 43 and given to the voltage command unit 45. At this time, the current flowing into the power storage device 30 is detected by the current detection unit 46, and the charge current is controlled by the charge / discharge control unit 42. As a result, regenerative energy can be stored in the power storage device 30.

(B) In the state where the regenerative energy discharge operation switch 53 is switched to the elevator apparatus side and the switch 54 is opened, the direct current smoothed by the smoothing capacitor 18b is converted to the inverter 19 during the power running operation of the car 14. Therefore, the voltage between the DC buses that is a power supply line to the inverter 19 is lower than that at the time of stop. The voltage drop at this time is detected by the voltage detection unit 41 in the power storage control device 32.

  Further, when the car 54 is in a power-running operation with the switch 54 short-circuited, the direct current smoothed by the smoothing capacitors 18 a and 18 b is supplied to the inverter 19. Therefore, the direct current that is a power supply line to the inverter 19 is used. The bus-to-bus voltage is lower than when it is stopped. The voltage drop at this time is detected by the voltage detection unit 41 in the power storage control device 32.

  In the power storage control device 32, when the DC bus voltage falls below a preset reference value, the voltage of the power storage device 30 is boosted to the target value set by the voltage command unit 45 and matched to the DC bus voltage. As a result, the discharge switching element 34 in the charge / discharge circuit 31 is turned on to discharge the regenerative energy accumulated in the power storage device 30 to the power supply line. At this time, the current flowing out from the power storage device 30 is detected by the current detection unit 46, and the discharge current is controlled by the charge / discharge control unit 42.

In addition, as a characteristic element of the present embodiment, the elevator control device 21 further includes a car position detection unit 61, a power usage calculation unit 62, a charge necessity determination unit 63, and a switch (SW) switching unit 64.
The sheave 12 is provided with a pulse generator (PG) 12a which is a car movement amount detecting device. The pulse generator 12 a outputs a pulse signal corresponding to the rotation angle of the sheave 12 to the elevator control device 21.

  The car position detector 61 of the elevator control device 21 detects the position of the car 14 based on the number of accumulated pulses obtained as a result of the up / down counting of the pulse signal from the pulse generator 12a.

FIG. 3 is a diagram illustrating an example of the appearance of the hall indicator and hall call button of the hybrid drive elevator according to the first embodiment.
In the present embodiment, as shown in FIG. 3, a landing door 70, a landing destination floor registration device 71, and a hall indicator 72 are provided at the landing on each floor. In this embodiment, it is assumed that one landing is provided on each floor, and one landing door 70, one landing destination registration device 71, and one hall indicator 72 are provided on each floor landing.

  The lighting lamp of the landing destination floor registration device 71 is pressed from the power storage device 30 until the car 14 responds to the installation floor when the destination floor registration from the installation floor is performed. Lights when power is supplied.

The hall indicator 72 is normally lit by power supply from the power storage device 30 and displays the car position of the car 14.
Based on the car position detected by the car position detecting unit 61 and the information on the destination floor registered by the operation of the landing destination floor registration apparatus 71, the power consumption calculating unit 62 of the elevator control device 21 calculates from the current car position. The electric power used for raising / lowering the car 14 to the floor of the response destination is calculated. This electric power includes driving power for raising and lowering the car 14, and electric power for lighting the landing destination floor registration device 71 and the hall indicator 72 of each floor during raising and lowering and for a certain period of time after the raising and lowering.

  The charging necessity determining unit 63 compares the value of the used power calculated by the used power calculating unit 62 with the stored power derived from the voltage detected by the voltage detecting unit 43 of the power storage control device 32, so that the car 14. Charging the power storage device 30 from the commercial power source 16 as a customer power source by determining whether or not the power required to travel from the current car position to the floor of the response destination is stored in the power storage device 30 It is determined whether or not it is necessary.

  In addition, the charging necessity determining unit 63 determines whether the electric power required for the car 14 to travel from the current car position to the floor of the response destination and the electric power stored in the electric power storage device 30 due to a shortage of electric power stored in the electric power storage device 30. It is also determined whether or not the elevator is required to be driven by the electric power from the commercial power supply 16 based on the time required for charging because the difference is large.

  The switch (SW) switching unit 64 switches the switch 53 on the power storage device 30 side to the elevator device side when the charging necessity determining unit 63 determines that charging of the power storage device 30 is not required, When the charging necessity determining unit 63 determines that charging is required, the switch 53 on the power storage device 30 side is switched to the customer power source side.

  Further, when the switch (SW) switching unit 64 determines that the elevator needs to be driven by the power from the commercial power supply 16 due to the shortage of the stored power of the power storage device 30, the switch (SW) switching unit 64 shorts the switch 54 on the power supply line side. When it is determined that the elevator does not need to be driven by the power from the commercial power supply 16 and can be driven by the power from the power storage device 30, the switch 54 on the power supply line side is opened.

Next, the operation of the hybrid drive elevator having the configuration shown in FIG. 1 will be described. FIG. 4 is a flowchart showing a flow of operation control of the hybrid drive elevator according to the first embodiment.
In the initial state, the switch 54 on the power supply line side is open, and the switch 53 on the power storage device 30 side is switched to the elevator equipment side. Further, it is assumed that the operation mode of the elevator is set to a standby mode in which the power source of the devices in the car 14 is turned off. In addition, the power storage device 30 has a dedicated power storage area for supplying each unit in the elevator control device 21, and this region is charged with electric power that allows each unit in the elevator control device 21 to operate for a predetermined time. It is assumed that each unit in the elevator control device 21 is always in operation by receiving power from the power supply circuit 60 by customer power or power from the power storage device 30.

  First, when an operation for registering a destination floor with respect to the landing destination floor registration device 71 is performed, the operation command unit 29 of the elevator control device 21 inputs a destination floor registration signal from the landing destination floor registration device 71. Call registration. At this time, the operation mode of the elevator remains in the standby mode, and the operation corresponding to the call registration is not started.

  When the destination floor is registered in this way (YES in step S1), the power consumption calculation unit 62 of the elevator control device 21 registers the car position detected by the car position detection unit 61 and the operation of the landing destination floor registration device 71. Based on the information on the floor of the response destination that is the destination floor, the power used for raising and lowering the car 14 from the current car position to the floor of the earliest response destination is calculated (step S3). . This response destination floor is not limited to the earliest destination floor that is scheduled to respond among registered destination floors, but is a destination floor other than the earliest destination floor among a plurality of destination floors that are scheduled to respond. Also good.

  The voltage detection unit 43 of the power storage control device 32 detects the voltage of the power storage device 30 and outputs it to the charge necessity determination unit 63 (step S4). The charging necessity determining unit 63 compares the value of the used power calculated by the used power calculating unit 62 with the stored power derived from the voltage detected by the voltage detecting unit 43 of the power storage control device 32, so that the car 14. Determines whether or not the electric power required for traveling from the current car position to the floor of the response destination related to the calculation of the electric power used is stored in the power storage device 30, so that the commercial power supply 16 that is the customer power supply It is determined whether or not it is necessary to charge the power storage device 30 from (step S5). As described above, the electric power required to travel to the floor of the response destination lights up the driving power for raising and lowering the car 14, the landing destination floor registration device 71 and the hall indicator 72 of each floor during the raising and lowering, Includes power for lighting for a certain period of time after lifting.

  When it is determined that the power storage device 30 needs to be charged (YES in step S5), the charging necessity determination unit 63 determines the electric power required for the car 14 to travel from the current car position to the floor of the response destination. When the difference from the stored power of the power storage device 30 is not large and the power storage device 30 can be charged within a predetermined time (YES in step S6), the switch 53 on the power storage device 30 side is set to the customer power source side. An instruction signal for switching is output to the switch (SW) switching unit 64.

  When the switch (SW) switching unit 64 receives an instruction signal from the charge necessity determining unit 63, the switch 53 on the power storage device 30 side is switched to the customer power supply side (step S7), and the charge / discharge control unit 42 is switched. An instruction signal for controlling the charging current is output. As a result, charging of the power storage device 30 with electric power from the commercial power supply 16 is started (step S8).

  The charging necessity determining unit 63 completes the necessary charging when the stored power of the power storage device 30 becomes equal to or greater than the value of the used power calculated by the used power calculation unit 62 due to the charging of the power storage device 30. (YES in step S9), an instruction signal for returning the switch 53 on the power storage device 30 side from the customer power supply side to the elevator equipment side is output to the switch (SW) switching unit 64.

  The switch (SW) switching unit 64 inputs an instruction signal from the charging necessity determining unit 63 or when the charging necessity determining unit 63 determines that charging of the power storage device 30 is not required (step S5). NO), the switch 53 on the power storage device 30 side is returned from the customer power source side to the elevator equipment side (step S10), and the output of the charge current control instruction signal to the charge / discharge control unit 42 is terminated. Thereby, the charging of the electric power from the commercial power supply 16 to the power storage device 30 is completed. By charging the power storage device 30 from the commercial power supply 16 in this manner, even when the power required for the response to the destination floor is not charged to the power storage device 30, the power required for the response to the destination floor is obtained. Since the power storage device 30 can be charged, power supply from the power storage device 30 to the inverter 19, the elevator control device 21, the landing destination floor registration device 71, and the hall indicator 72 can be maintained.

  Then, the charge necessity determination unit 63 outputs an operation start instruction signal to the operation command unit 29. When the operation command signal is input, the operation command unit 29 cancels the standby mode of the elevator operation mode, and instructs the speed command unit 22 to enter the destination floor according to the car traveling pattern up to the destination floor. Command the speed of the car 14. Then, the charge necessity determination unit 63 outputs an instruction signal for controlling the discharge current to the inverter 19, the elevator control device 21, the landing destination floor registration device 71, and the hall indicator 72 to the charge / discharge control unit 42. As a result, the power supply from the power storage device 30 to the inverter 19 and the power supply to the power supply circuit 60 in the elevator control device 21 are performed, and the power supply to the power supply circuit 60 causes the landing destination floor registration device 71 and the hall. Electric power is supplied to the indicator 72, and the operation service of the car 14 is started (step S11).

  By performing the control as described above, the electric power from the power storage device 30 is supplied to the landing destination floor registration device 71 and the hall indicator 72, which are devices that always require power for the elevator operation, to the power storage device 30. Therefore, the regenerative energy can be used more effectively than the conventional hybrid drive elevator.

  On the other hand, the charging necessity determining unit 63 determines that charging of the power storage device 30 is required in step S5 as described above, and the car 14 travels from the current car position to the earliest response destination floor. When the difference between the electric power required for power storage and the stored power of the power storage device 30 is large and the power storage device 30 cannot be charged within a predetermined time (NO in step S6), avoiding a decrease in convenience related to driving In order to do this, a short-circuit instruction signal for the switch 54 is output to the switch switching unit 64.

  When the short-circuit instruction signal is input, the switch (SW) switching unit 64 switches the switch 54 on the power supply line side so as to short-circuit (step S <b> 16), and outputs an operation start instruction signal to the operation command unit 29. When the operation start signal is input, the operation command unit 29 cancels the standby mode of the elevator operation mode, and causes the speed command unit 22 to enter the destination floor according to the car traveling pattern up to the destination floor. The speed command of the car 14 is performed, whereby the power from the commercial power source 16 is supplied to the inverter 19 and the power supply circuit 60 in the elevator control device 21 is supplied to the power supply circuit 60. Electric power is also supplied to the hall destination floor registration device 71 and the hall indicator 72 by the electric power supply, and the elevator service for the car 14 is started (step S11). Thereby, since the lifting service can be started without performing power storage in the power storage device 30, it is possible to avoid a decrease in convenience related to driving.

  After the elevator service starts, the car 14 arrives at the destination floor and opens (step S12). When the elevator service is completed (step S13), another destination floor is registered (step YES in S14), the process returns to step S3.

  On the other hand, when the elevator service is completed and no other destination floor is registered (NO in step S14), the operation command unit 29 shifts the elevator operation mode to the standby mode (step S15), and the next Wait until the destination floor is registered.

  As described above, in the hybrid drive type elevator in the first embodiment, in addition to the inverter for driving the car, the electric power stored in the power storage device is always operated by electric power for elevator operation, such as a landing device. Since it supplies also to the apparatus which needs, compared with the conventional hybrid drive type elevator, the electric power accumulate | stored in the electrical storage apparatus can be used effectively.

(Second Embodiment)
Next, a second embodiment will be described. In addition, description of the same part as what was shown in FIG. 1 among the hybrid drive type elevators in this embodiment is abbreviate | omitted.
In this embodiment, during the operation described in the first embodiment, when the car 14 is unmanned and is moved to the destination floor by regenerative operation, before the charging of the power storage device 30 is completed, that is, power storage. Improving convenience related to the operation of the elevator by starting the lifting service even before the stored power of the power storage device 30 becomes equal to or higher than the value of the used power calculated by the used power calculation unit 62 by charging the device 30. It is characterized by.

FIG. 5 is a diagram illustrating a configuration of an elevator control device for a hybrid drive type elevator according to the second embodiment.
In the present embodiment, the elevator control device 21 further includes an operation mode determination unit 81 between the charge necessity determination unit 63 and the SW switching unit 64 described in the first embodiment. The driving form determination unit 81 determines whether the inside of the car 14 is unmanned and the driving form of the car from the current car position to the destination floor is a regenerative operation.

FIG. 6 is a flowchart showing a flow of operation control of the hybrid drive elevator according to the second embodiment.
In the present embodiment, after the operations from Steps S1 to S7 described in the first embodiment are performed, charging of the power storage device 30 from the customer power supply is started in Step S8, and then the elevator controller 21 needs to be charged. The rejection determination unit 63 outputs a charging start notification signal to the driving mode determination unit 81. When the charging start notification signal is input, the driving form determination unit 81 determines whether or not the inside of the car 14 is unmanned based on the load signal output from the load detection switch unit 25 (step S21). In this way, whether or not the inside of the car 14 is unmanned is determined because the amount of regenerative energy generated decreases when the car 14 is not unmanned. This is because the stored power of the power storage device 30 is reduced when the lifting service before the completion of charging is started so as not to hinder the operation.

  When determining that the inside of the car 14 is unmanned (YES in Step S21), the driving form determination unit 81 determines whether or not the driving form of the car from the current car position to the destination floor is a regenerative operation. (Step S22).

  When the driving mode determination unit 81 determines that the driving mode of the car from the current car position to the destination floor is the regenerative driving (YES in step S22), the driving mode determination unit 81 charges the power storage device 30. Regardless of whether or not the power storage device 30 has been charged, that is, whether or not the stored power of the power storage device 30 has become equal to or greater than the value of the used power calculated by the used power calculation unit 62. An instruction signal for returning from the previous power source side to the elevator equipment side is output to the switch (SW) switching unit 64.

  When the switch (SW) switching unit 64 receives the instruction signal from the operation mode determination unit 81, the switch 53 on the power storage device 30 side returns to the elevator equipment side (step S10), and the charge current to the charge / discharge control unit 42 is changed. The output of the control instruction signal is terminated. Thereby, the charging of the electric power from the commercial power supply 16 to the power storage device 30 is completed.

  When it is determined that the above-described driving mode is a regenerative operation, the driving mode determination unit 81 outputs a driving start instruction signal to the driving command unit 29. When the operation command signal is input, the operation command unit 29 cancels the standby mode of the elevator operation mode, and instructs the speed command unit 22 to enter the destination floor according to the car traveling pattern up to the destination floor. A speed command for the car 14 is issued, and an instruction signal for controlling discharge current to the inverter 19, the elevator control device 21, the landing destination floor registration device 71 and the hall indicator 72 is output to the charge / discharge control unit 42. As a result, the power supply from the power storage device 30 to the inverter 19 and the power supply to the power supply circuit 60 in the elevator control device 21 are performed, and the power supply to the power supply circuit 60 causes the landing destination floor registration device 71 and the hall. Electric power is supplied to the indicator 72, and the driving service of the car 14 is started (step S11). Here, as described above, the regenerative operation up to the destination floor is performed, and the operation is performed while the regenerative energy is charged from the electric motor side to the power storage device 30. Subsequent operations are the same as those after step S12 described in the first embodiment.

  As described above, in the hybrid drive type elevator according to the second embodiment, when the car 14 is unmanned and moves to the destination floor by regenerative operation during driving, before the charging of the power storage device 30 is completed. Therefore, the lifting service can be started without completing the power storage in the power storage device 30. Therefore, the waiting time until the start of driving is shortened, and convenience related to driving can be improved.

According to each of these embodiments, it is possible to provide a control device for a hybrid drive elevator that can sufficiently utilize regenerative energy.
Although several embodiments of the invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 11 ... Electric motor, 12 ... Sheave, 13 ... Rope, 14 ... Ride car, 15 ... Counterweight, 16 ... Commercial power supply, 17 ... Rectifier, 18 ... Smoothing capacitor, 19 ... Inverter, 20 ... Inverter current detection device, 21 ... Elevator Control device, 22 ... Speed command section, 23 ... Speed detection section, 24 ... Speed control section, 25 ... Load detection switch section, 26 ... Load signal calculation section, 27 ... Torque command determination section, 28 ... Inverter current control section, 29 ... Operation command section, 30 ... Power storage device, 31 ... Charge / discharge circuit, 32 ... Power storage control device, 33 ... Charging switching element, 34 ... Discharging switching element, 35 ... DC reactor, 41 ... Voltage detection section, 42 ... Charging Discharge control unit 43 ... Voltage detection unit 44 ... Voltage change monitoring unit 45 ... Voltage command unit 46 ... Current detection unit 51 ... Switching element 52 ... Regenerative resistor , 60 ... power supply circuit, 61 ... car position detection unit, 62 ... used power calculation unit, 63 ... charge necessity determination unit, 64 ... switch (SW) switching unit, 70 ... landing door, 71 ... landing destination floor registration device, 72... Hall indicator, 81.

Claims (4)

Operates the power that is generated in the power supply line of the motor for driving the car during the regenerative operation of the car, the power for driving the car, and the equipment that needs to be constantly operated by the power for the elevator operation. A power storage device for storing electric power for
Control means for performing control to supply power stored in the power storage device to the power supply line and the device that needs to be constantly operated in a state where power is not supplied from a commercial power source to the power supply line. A control device for a hybrid drive type elevator characterized by that. A storage state detecting means for detecting a charge state of the power storage device;
A destination floor registration device that accepts a destination floor registration operation from the platform;
Power calculating means for calculating power required to be supplied to the power supply line and the device that needs to be constantly operated for operation from destination floor registration to response to the destination floor by operation of the destination floor registration device; ,
When the electric power indicated by the charging state detected by the storage state detecting means is less than the electric power calculated by the electric power calculating means, the commercial power supply is configured such that the electric power indicated by the charging state is equal to or greater than the calculated electric power. The hybrid drive elevator control device according to claim 1, further comprising charge control means for charging the power storage device from the vehicle. The hybrid drive elevator control according to claim 2, wherein when the time required for charging associated with the destination floor registration is a predetermined time or more, power is supplied from the commercial power source to the power supply line. apparatus. When destination floor registration is performed by operation of the destination floor registration device, the inside of the car is unmanned, and the operation mode of the car up to the installation floor of the operated destination floor registration device is regenerative operation. 3. The hybrid drive elevator control device according to claim 2, wherein the operation to the installation floor is started before the charging from the commercial power source to the power storage device by the charge control unit is completed. .

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