JP5760533B2 - Elevator control device - Google Patents

Description

  The present invention relates to an elevator control device.

  In order to improve the riding comfort of the elevator car, a damping device for damping the car is necessary. As this vibration damping device, a device using a mechanical damper has been proposed.

  However, it is difficult to predict the damping capacity with a mechanical damper. For this reason, the mechanical damper may resonate with the vibration of the car. In this case, the vibration of the car is amplified.

  In order to solve this problem, a vibration damping device using an electric damper has been proposed (see, for example, Patent Document 1).

JP 2002-356287 A

  This electric damper is controlled by a vibration damping control device. The vibration suppression control device is provided on the car. On the car, a door driving device, an air conditioner, a barometric pressure control device, and the like are also arranged. Electric power is supplied to these devices from the elevator machine room via a control cable.

  By the way, in recent years, the number of buildings is increasing. Along with this, the speed of the elevator is increased. Along with this, the vibration of the car increases. For this reason, the electric power required for the electric damper is also increased. In addition, the length of the control cable increases the amount of voltage drop in the control cable. For this reason, it is necessary to increase the number of control cables.

  Increasing the number of control cables increases the weight of the control cables. For this reason, it is necessary to enlarge the capacity | capacitance of the winding machine and inverter required when raising / lowering a cage | basket | car.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator control device that can reduce the number of control cables by reducing the power supplied to the car equipment. Is to provide.

The elevator control device according to the present invention operates the elevator when a plurality of devices provided in the elevator car operate using electric power supplied to the car from the outside of the car via a control cable. A power distribution device that sets operating conditions of the plurality of devices such that a total value of power consumed by the plurality of devices is equal to or less than a predetermined value based on a state, and the elevator includes a plurality of adjacent ones The elevator comprises an elevator, and the plurality of devices includes a vibration suppression control device that suppresses vibration of the car and a pressure control device that controls a pressure inside the car, and the power distribution device includes the vibration suppression control device and the air pressure. The position or speed when the cars of the plurality of elevators pass each other is adjusted so that the total value of the electric power consumed by the control device is not more than a predetermined value .
The elevator control device according to the present invention operates the elevator when a plurality of devices provided in the elevator car operate using electric power supplied to the car from the outside of the car via a control cable. A power distribution device that sets operating conditions of the plurality of devices such that a total value of power consumed by the plurality of devices is equal to or less than a predetermined value based on a state, the power distribution device comprising: The power distributed to the plurality of devices is weighted according to the priority of the devices.
The elevator control device according to the present invention operates the elevator when a plurality of devices provided in the elevator car operate using electric power supplied to the car from the outside of the car via a control cable. A power distribution device that sets operating conditions of the plurality of devices such that a total value of power consumed by the plurality of devices is equal to or less than a predetermined value based on a state, the power distribution device comprising: The driving state and the environment in the car are learned, and the priority of the plurality of devices is set based on the learning result.

  According to the present invention, it is possible to reduce the number of control cables by reducing the power supplied to the car equipment.

It is a figure which shows the elevator car in which the control apparatus of the elevator in Embodiment 1 of this invention is utilized. It is a figure which shows the equivalent circuit of the control cable of the elevator in which the elevator control apparatus in Embodiment 1 of this invention is utilized. 1 is a system configuration diagram of an elevator control device according to Embodiment 1 of the present invention. FIG. It is a timing chart which shows the operation state of the elevator in Embodiment 1 of this invention, and operation | movement of each on-car apparatus. It is a figure which shows distribution of the required electric power of each apparatus in each operation mode when the elevator car in which the elevator control apparatus in Embodiment 1 of this invention is utilized raises. It is a figure which shows distribution of the required electric power of each apparatus in each operation mode when the elevator car in which the elevator control apparatus in Embodiment 1 of this invention is utilized descend | falls. It is a figure for demonstrating the power consumption of the apparatus controlled by the control apparatus of the elevator in Embodiment 1 of this invention. It is a figure for demonstrating the atmospheric | air pressure control by the elevator control apparatus in Embodiment 1 of this invention. It is a figure which shows the state in which the elevator car in which the elevator control apparatus in Embodiment 1 of this invention is utilized passes each other. It is a flowchart for demonstrating operation | movement of the electric power distribution apparatus of the control apparatus of the elevator in Embodiment 1 of this invention. It is a flowchart for demonstrating operation | movement of the electric power distribution apparatus of the control apparatus of the elevator in Embodiment 1 of this invention.

  A mode for carrying out the present invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a diagram showing an elevator car in which an elevator control apparatus according to Embodiment 1 of the present invention is used.

  In FIG. 1, a rail 1 is provided in an elevator hoistway (not shown). A car 2 is arranged in the hoistway. A car room 3 is provided in the car 2. The cab 3 is held so as to be pressed against the rail 1 by an actuator (electric damper) 4. On the upper part of the car 2, a vibration suppression control device 5, an atmospheric pressure control device 6, an air conditioner 7, a door drive device 8, and a power distribution device 9 are provided as equipment on the car.

  The vibration suppression control device 5 has a function of controlling the actuator 4. The atmospheric pressure control device 6 has a function of controlling the atmospheric pressure in the cab 3 via the duct 10. The air conditioner 7 has a function of performing air conditioning in the cab 3 via the duct 11. The door driving device 8 has a function of driving a door (not shown) of the cab 3. The power distribution device 9 has a function of setting operating conditions of the vibration suppression control device 5, the atmospheric pressure control device 6, the air conditioner 7, and the door drive device 8.

  In the vibration damping control device 5, the atmospheric pressure control device 6, the air conditioner 7, the door drive device 8, and the power distribution device 9, a control panel (not shown in FIG. 1) disposed in a machine room (not shown) of the elevator. ) Through a control cable (not shown in FIG. 1).

Next, the condition of the number of control cables will be described with reference to FIG.
FIG. 2 is a diagram showing an equivalent circuit of an elevator control cable in which the elevator control apparatus according to Embodiment 1 of the present invention is used.

In FIG. 2, 12 is a control panel. Reference numeral 13 denotes a control cable. Ω _cab (Ω / km) is the resistivity of the control cable 13. V _cp (V) is a voltage on the control panel 12 side of the control cable 13. V _car (V) is a voltage on the car 2 side of the control cable 13. I _car (A) is a current flowing through the control cable 13.

  In this case, if the length of the control cable 13 is L (km) and the parallel number of the control cables 13 is N, the resistance R (Ω) of the control cable 13 is expressed by the following equations (1) and (2). Indicated.

From the equations (1) and (2), the current I _car is expressed by the following equation (3).

V _cp , Ω _cab , and L are known. _Assuming that V _car is the minimum voltage at which the equipment on the _car operates, the maximum value of the current I _car is proportional to the parallel number N of the control cables 13. At this time, the received power W _car (W) on the car 2 side is expressed by the following equation (4).

Accordingly, when the total power required for the car equipment is W _sat (W), the following equation (5) is established.

Substituting the current I _car of the equation (3) into the equation (5), the following equation (6) is established.

  To summarize the equation (6), the parallel number N of the control cables 13 is expressed by the following equation (7).

_Assuming that the electric power when the electric power required for each device on the car is simply added is W _sat1 (W), the parallel number N ₁ of the control cable 13 at this time is expressed by the following expression (8). Indicated by

_Assuming that the power when the power distribution of the equipment on the car is performed is W _sat2 (W), the parallel number N ₂ of the control cable 13 at this time is expressed by the following expression (9). .

  From the equations (8) and (9), the number x of the control cables 13 that is reduced by distributing the power of the devices on the car is an integer value that satisfies the following equation (10).

Therefore, in order to reduce the x control cables 13, W _sat2 that satisfies the following equation (11) is required.

  Therefore, in the present embodiment, the power distribution device 9 performs power distribution of the equipment on the car so as to satisfy the expression (11). Hereinafter, power distribution by the power distribution device 9 will be described.

First, the system configuration of the present embodiment will be described with reference to FIG.
FIG. 3 is a system configuration diagram of the elevator control apparatus according to Embodiment 1 of the present invention.

  As shown in FIG. 3, the control panel 12 transmits and receives the position of the adjacent elevator car 2, the passing information of each other car 2, and the like. The power distribution device 9 receives the required power as power information from the car equipment. The power distribution device 9 receives from the control panel 12 the operating conditions of the elevator and the passing information with the elevator car 2 adjacent thereto. The power distribution device 9 comprehensively determines from these pieces of information, and determines power distribution to the devices on each car. The power distribution device 9 transmits power restriction information to each on-car device according to the determined power distribution. Each on-car device operates within the power limit range based on the power limit information.

Next, the minimum power W _car2 required on the car 2 will be described with _reference to FIG.
FIG. 4 is a timing chart showing the traveling state of the elevator and the operation of each on-car device in Embodiment 1 of the present invention.

The speed pattern of the car 2 is shown at the top of FIG. The required power W ₁ of the door driving device 8 is shown immediately below the speed pattern of the car 2. The required power W ₂ of the atmospheric pressure control device 6 is shown immediately below the required power W ₁ of the door drive device 8. The required power W ₃ of the vibration suppression control device 5 is shown immediately below the required power W ₂ of the atmospheric pressure control device 6. The required power W ₄ of the air conditioner 7 is shown immediately below the required power W ₃ of the vibration suppression control device 5.

First, the power requirements W ₁ of the door drive 8. When the car 2 is stopped, the required power W ₁ becomes the minimum value W _{1 min} when the door is not driven. During driving of the door, the required electric power W ₁ is determined according to the weight and operation of the door. In this case, the required electric power _{W 1} is the maximum value _{W 1max.} During the traveling of the car 2, the pressing operation is performed. The required power W _{1 at} this time is a very small value.

Next, the required power W ₂ of the pressure control device 6. When the car 2 is stopped or the car 2 is raised, the atmospheric pressure control device 6 does not operate. Therefore, the necessary power _{W 2} is the minimum value _{W 2min.} In the direction that the air pressure decreases, the ears are naturally removed. For this reason, it is hard to produce an ear closure feeling. When the car 2 descends, first, the air pressure in the car 2 is controlled to a value different from the external air pressure. For this reason, the atmospheric pressure control device 6 operates so as to cover the difference between the external atmospheric pressure and the control atmospheric pressure. In this case, the required electric power _{W 2} is the maximum value _{W 2max.}

Next, the required power W ₃ of the damping control system 5. When the car 2 is stopped, the vibration of the car 2 is basically small. Therefore, the necessary power _{W 3} being a minimum value _{W min3.} While the car 2 is traveling, the car 2 vibrates due to the influence of the state of the rail 1 and the passing of the adjacent car. When the vibration is large, the required electric power _{W 3} being the maximum value _{W 3max.}

Next, the required power W ₄ of the air conditioner 7. Regardless of the operating of the car 2, the larger the difference between the temperature in the set temperature and the car 2, increases power requirements W _4. In contrast, the smaller the difference between the temperature in the set temperature and the car 2, it requires power W ₄ becomes smaller. That is, according to the difference between the temperature in the set temperature and the car 2, determines the minimum value _{W 4min} and the maximum value _{W4 max} power needs _{W 4.}

At this time, the minimum power W _car2 required on the car 2 is _expressed by the following equation (12).

Next, the maximum power W _car2 required on the car 2 will be described with _reference to FIGS. 5 and 6.
FIG. 5 is a diagram showing a distribution of required power of each device in each operation mode when the elevator car in which the elevator control apparatus according to Embodiment 1 of the present invention is used rises. FIG. 6 is a diagram showing a distribution of required power of each device in each operation mode when the elevator car in which the elevator control apparatus according to Embodiment 1 of the present invention is used is lowered.

As shown in FIG. 5 and FIG. 6, the maximum power W _car2 required on the car 2 has the fastest passing relative speed between adjacent elevator cars when the elevator is lowered, and the difference between the control atmospheric pressure and the external atmospheric pressure. Is the power when the difference between the set temperature of the air conditioner 7 and the temperature in the car 2 is large.

At this time, _assuming that the electric power required for the door pressing operation is W _1move (W), the electric power W _sat2 when the electric power is distributed _{among the} devices on the car is _expressed by the following equation (13).

On the other hand, the electric power W _sat1 when the electric power required for each device on the car is simply added is _expressed by the following equation (14).

  Therefore, the number x of control cables 13 to be reduced is an integer value that satisfies the following equation (15).

However, in the equation (15), only the power corresponding to the difference between the power W _1move required for the door pressing operation and the maximum power W _1max during driving is reduced. In order to further reduce the power consumption, the electric power W _sat2 when the electric power is distributed _{among the} devices on the car may be made smaller than the value obtained by the expression (13).

  Therefore, in the present embodiment, as shown in FIG. 5 and FIG. 6, priority is given to the equipment on each car based on the operation state of the elevator such as the weight of the car 2 determined by the presence or absence of passengers in the car room 3. A ranking is assigned, and weighting is performed according to the priority order. This weighting is determined in consideration of comfort in the car 2 and the like. At this time, a weight of 0 means that the minimum power is supplied. A weight of 1 means supplying maximum power. In FIGS. 5 and 6, as an example, weighting of 0.2 or 0.8 is performed.

Next, the power consumption when weighting is described with reference to FIG.
FIG. 7 is a diagram for explaining the power consumption of the equipment controlled by the elevator control apparatus according to Embodiment 1 of the present invention.

As shown in FIG. 7, when the weight α _n is smaller than the weight 1, power on the car is supplied with a value obtained by multiplying the maximum power consumption W _nmax by α _n . For this reason, the power consumption of the equipment on the car is suppressed.

For example, when the elevator descends, the relative speed of the adjacent elevator car 2 is the fastest, and the weight of the air conditioner 7 is set to 0 when the difference between the control atmospheric pressure and the external atmospheric pressure is large. Thus, the necessary power _{W 4} of the air conditioner 7 is the minimum value _{W 4min.} As a result, the electric power W _sat2 when the electric power is distributed _{among the} devices on the car is smaller than the value obtained by the equation (13).

  Instead, power is preferentially distributed to the air conditioner 7 in a section where other on-car equipment does not require power. In some cases, the set temperature of the air conditioner 7 is lowered in the section. This prevents the temperature in the cab 3 from greatly deviating from the set temperature.

  In this case, the number x of control cables 13 to be reduced is an integer value that satisfies the following equation (16).

Next, an example of adjustment of the atmospheric pressure control device 6 will be described with reference to FIG.
FIG. 8 is a diagram for explaining the atmospheric pressure control by the elevator control apparatus according to Embodiment 1 of the present invention.

As shown in FIG. 8, when there are passengers in the cab 3, the atmospheric pressure control device 6 changes the atmospheric pressure (control atmospheric pressure) in the cab 3 with respect to the external atmospheric pressure. This prevents the passengers in the cab 3 from feeling closed. Therefore, when the difference from the external atmospheric pressure is small, the control of the atmospheric pressure may be stopped or the control performance may be reduced. In this case, the priority of the atmospheric pressure control device 6 may be lowered to lower the weight.

Next, an example of adjustment of the air conditioner 7 will be described.
Need power W ₄ of the air conditioner 7, changes revealed by the season. For this reason, the difference between the temperature in the cab 3 and the set temperature may be learned, and the weight of the air conditioner 7 may be adjusted by the power distribution device 9. In addition, when the difference between the temperature in the cab 3 and the set temperature becomes large depending on the operation state of the elevator and the outside air temperature, the set temperature of the air conditioner 7 is stopped when the elevator stops and the power required for other on-car equipment is low. May be changed to maintain the comfort of passengers in the cab 3.

Next, an example of adjustment of the vibration suppression control device 5 will be described.
The amount of vibration generated in the car 2 can be estimated from the weight in the car 2 and the position of the car 2. Therefore, the weight information of the car 2 may be acquired from the control panel 12 and the weighting of the vibration suppression control device 5 may be adjusted by the power distribution device 9. Even when the amount of vibration generated in the car 2 changes over time, the power distribution device 9 may adjust the weighting of the vibration suppression control device 5. By these adjustments, the comfort of passengers in the cab 3 can be maintained.

  Thus, if weighting at each condition is appropriately performed, each on-car device is in an energy saving mode as necessary while maintaining the comfort of passengers in the cab 3. Thereby, the total power consumed by the equipment on the car can be reduced, and the number of control cables 13 can be reduced.

Next, a method for further reducing the total power consumed by the equipment on the car will be described with reference to FIG.
FIG. 9 is a diagram showing a state in which the elevator cars in which the elevator control apparatus according to Embodiment 1 of the present invention is used pass each other.

  In order to further reduce the total power consumed by the equipment on the car, the position or speed that passes the adjacent elevator car 2 may be adjusted. That is, it is only necessary to control the raising / lowering of each car 2 so that the relative speed of the car 2 does not pass greatly in a place where atmospheric pressure is high.

A relative velocity va + vb of each car 2, when the position h of the car 2, the required electric power _{W 2,} the required electric power _{W 3} of the vibration damping control device 5 of the pressure controller 6, the following equation (17), (18) Indicated by

Therefore, the total power consumption W _T of the damping control system 5 and the pressure control device 6 is represented by the following equation (19).

  In this case, the number x of control cables 13 to be reduced is an integer value that satisfies the following equation (20).

  The power distribution device 9 transmits information regarding the passing position h and the relative speed va + vb to the control panel 12 so as to satisfy the target x. Based on these pieces of information, the control panel 12 restricts the operation of each elevator.

In this case, small relative speed of the car 2 adjacent elevator, with even fewer positions vibration of the car 2 based on the state of the rail 1, the required power W ₃ of the vibration damping control device 5 is little. In this case, the larger the required power W ₂ of the pressure control device 6, to short-circuit both ends of the actuator 4. Thereby, the power consumption of the vibration suppression control apparatus 5 is reduced. Corresponding to this reduction, power distribution to the atmospheric pressure control device 6 may be increased.

Next, the operation of the power distribution device 9 will be described with reference to FIGS. 10 and 11.
10 and 11 are flowcharts for illustrating the operation of the power distribution device of the elevator control device according to Embodiment 1 of the present invention.

First, the procedure of power distribution will be described with reference to FIG. In step S <b> 1, the power distribution device 9 receives information on the necessary power W _{1 to} W ₄ of each on-car device and information on the operation state of each elevator. Thereafter, the process proceeds to step S2, the power distribution unit 9 checks whether the sum of the required power _W 1 to _W-4 exceeds the allowable maximum power _{W sat.} This allowable maximum power W _sat is expressed by the following equation (21).

If the sum of the required powers W _{1 to} W ₄ does not exceed the allowable maximum power W _sat , the process proceeds to step S3. In step S <b> ₃ , the power distribution device 9 transmits a command for permitting an operation with the necessary power W _{1 to} W ₄ to each on-car device and transmits a command for permitting operation to the control panel 12. Thereafter, the flow advances to step S4, the on-car device operates using a required power _W 1 to _W-4. Each elevator operates as normal. Then, it progresses to step S5 and the control panel 12 transmits the driving | running | working state of an elevator. Each on-car device transmits the predicted value of the necessary power W ₁ to _W-4. Then, it returns to step S1 and the said operation | movement is repeated.

On the other hand, if the sum of the required powers W _{1 to} W ₄ exceeds the allowable maximum power W _sat , the process proceeds to step S6. In step S <b> 6, the power distribution device 9 assigns the priority order of the devices on the car based on the passing information with the operation state of each elevator. At this time, the necessary power W ₁ is always supplied to the door drive device 8 that is involved in safety. Then, it progresses to step S7 and the electric power distribution apparatus 9 distributes electric power with respect to each apparatus on a car based on a priority. Thereafter, the operations after step S5 are performed.

Next, with reference to FIG. 11, a procedure for setting the weight according to the priority order will be described. Step S11 is step S6 in FIG. When the process of step S11 ends, the process proceeds to step S12. In step S <b> 12, the power distribution device 9 determines weighting constants α _{1 to} α ₄ for the devices on the car based on the passing information with the operation state of each elevator. Thereafter, the process proceeds to step S13, power distribution unit 9 checks whether the sum of the required power _W 1 to _W-4 exceeds the allowable maximum power _{W sat.}

If the total sum of the required powers W _{1 to} W ₄ exceeds the allowable maximum power W _sat , the process returns to step S12 and the power distribution device 9 resets the weighting constants α _{1 to} α ₄ . On the other hand, if the sum of the required powers W _{1 to} W ₄ does not exceed the allowable maximum power W _sat , the process proceeds to step S14. In step S14, the power distribution device 9, the relative on-car equipment, the required electric power W ₁ ~W ₄ each new required power value obtained by multiplying each of the constants α1~α4 weighting corresponding to W ₁ of ~W ₄ and the distributed power is determined. Thereafter, the process proceeds to step S15, the on-car device operates with a new required power _W 1 to _W-4.

  According to the first embodiment described above, the operating conditions of the car equipment are set so that the total power consumption of the car equipment is less than or equal to a predetermined value based on the operating state of the elevator. For this reason, the power supplied to the equipment on the car can be reduced, and the number of control cables 13 can be reduced.

  Further, the position or speed when the plurality of cars 2 pass each other is adjusted. For this reason, the power consumption of the vibration suppression control device 5 and the atmospheric pressure control device 6 can be reduced.

  Moreover, the priority and weighting of the equipment on the car are set based on the operation state of the elevator. For this reason, appropriate electric power can be supplied to the devices on the car.

  Moreover, when the priority of the vibration suppression control device 5 is low, both ends of the coil of the actuator 4 are short-circuited. For this reason, even if the priority of the vibration suppression control device 5 is low, the actuator 4 can maintain the vibration suppression capability equivalent to that of the mechanical damper.

  If you learn the elevator operating conditions and the environment in the car 2, and set the priority and weight of the equipment on each car based on the learning result, the power distribution to the equipment on each car is automatically optimized. can do.

DESCRIPTION OF SYMBOLS 1 Rail 2 Cage 3 Cage 4 Actuator 5 Vibration suppression control device 6 Atmospheric pressure control device 7 Air conditioner 8 Door drive device 9 Power distribution device 10, 11 Duct 12 Control panel 13 Control cable

Claims (4)

When the plurality of devices provided in the elevator car operate using the electric power supplied to the car from the outside of the car via the control cable, the plurality of devices are based on the operation state of the elevator. A power distribution device that sets operating conditions of the plurality of devices such that a total value of consumed power is a predetermined value or less;
Equipped with a,
The elevator is composed of a plurality of adjacent elevators,
The plurality of devices includes a vibration suppression control device that suppresses vibration of the car and a pressure control device that controls the pressure inside the car,
The power distribution device adjusts a position or speed when the elevator cars pass each other so that a total value of power consumed by the vibration suppression control device and the atmospheric pressure control device is a predetermined value or less. An elevator control device characterized by that. When the plurality of devices provided in the elevator car operate using the electric power supplied to the car from the outside of the car via the control cable, the plurality of devices are based on the operation state of the elevator. A power distribution device that sets operating conditions of the plurality of devices such that a total value of consumed power is a predetermined value or less;
With
Wherein the power distribution device, according to the priority of the plurality of devices, the control device features and to Rue elevators that performs weighting on the power to be distributed to the plurality of devices. When the plurality of devices provided in the elevator car operate using the electric power supplied to the car from the outside of the car via the control cable, the plurality of devices are based on the operation state of the elevator. A power distribution device that sets operating conditions of the plurality of devices such that a total value of consumed power is a predetermined value or less;
With
The power distribution apparatus learns the operation states of the elevator and the environment within the cage, the learning based on the result, the plurality of control devices Rue elevators to set the priority of the device. 3. The elevator control device according to claim 2 , wherein the power distribution device learns an operation state of the elevator and an environment in the car, and sets the weighting based on a learning result.

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