JP2019006532A - Elevator and power supply control method - Google Patents

Abstract

To reduce the number of wire cores of a tail code with a simpler configuration.SOLUTION: This elevator is provided with: a car in which a plurality of electrical devices are arranged; and a control device 9 that supplies power to the electrical devices by using a feeder line including a plurality of wire cores. The control device 9 first activates a high-load electrical device in which a rush current is generated during the activation (SW1 on), and activates a low-load electrical device in which a rush current is not generated after a load current has changed to a steady state (SW2 on).SELECTED DRAWING: Figure 3

Description

  The present invention relates to an elevator that supplies power to a car that is performed via a tail cord, and a power supply control method.

  Patent Document 1 discloses a plurality of loads provided in a car in an elevator having a tail cord composed of a plurality of wire cores for transmitting power and transmitting an elevator control signal between a machine room control panel and the car. It is described that the power is transmitted with a single power transmission path for supplying power to the power and the voltage of the transmitted power is higher than the rated voltage of the load.

JP-A-5-319709

  The elevator described in Patent Document 1 increases the received voltage on the control panel side with a step-up transformer in order to suppress the voltage drop that occurs through the tail cord, and reduces the number of wire cores used in the tail cord. Yes. However, on the car side, a step-down transformer is required to generate various power sources that can be used with multiple loads from a common power source. The space for installing the step-down transformer on the car side and the step-down transformer are required. A circuit is required.

  From the above situation, there has been a demand for a technique for reducing the number of cores of the tail cord (feed line) with a simpler configuration.

  An elevator according to an aspect of the present invention includes an elevator including a carriage in which a plurality of electrical devices are arranged, and a control device that supplies power to the plurality of electrical devices using a power supply line including a plurality of wire cores. In this case, the control device first activates a high-load electric device that generates an inrush current at the time of activation, and activates a low-load electric device that does not generate an inrush current after the load current shifts to a steady state.

According to at least one aspect of the present invention, it is possible to supply electric power to electric devices in a car by reducing the number of power supply wires with a simple configuration.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is explanatory drawing which shows the example of whole structure of the elevator which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the outline of the electric system of the elevator which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the internal structural example of the control apparatus of the elevator which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the example of the electric equipment table which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the hardware structural example of the computer with which the control apparatus which concerns on each embodiment of this invention is provided. It is a flowchart which shows the example of a procedure of the electric power supply control processing method at the time of starting of the elevator which concerns on the 1st Embodiment of this invention. It is a current-voltage waveform diagram which shows the power supply control processing method to the electric equipment in the elevator car which concerns on the 1st Embodiment of this invention. FIG. 7A shows a current-voltage waveform when power is supplied to a high-load electric device in the car, and FIG. 7B shows a current-voltage waveform when power is supplied to a low-load electric device in the car. It is explanatory drawing which shows the outline of the electric system of the elevator which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows the example of a procedure of the electric power supply control processing method at the time of starting of the elevator which concerns on the 2nd Embodiment of this invention. It is a current-voltage waveform diagram which shows the electric power supply control processing method to the electric equipment in the upper car of the elevator which concerns on the 2nd Embodiment of this invention, and a lower car. 10A is a current voltage waveform when power is supplied to the high-load electric equipment in the upper car, FIG. 10B is a current voltage waveform when power is supplied to the low-load electric equipment in the upper car, and FIG. 10C is a high load of the lower car. FIG. 10D shows a current voltage waveform when power is supplied to the low-load electric device in the lower car, respectively. It is explanatory drawing which shows the outline of the electric system of the elevator which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows the example of a procedure of the electric power supply control processing method at the time of starting of the elevator which concerns on the 3rd Embodiment of this invention. It is a current-voltage waveform diagram which shows the electric power supply control processing method to the electric equipment in the elevator car which concerns on the 3rd Embodiment of this invention. FIG. 13A is a current voltage waveform when power is supplied to the first high-load electric device in the car, and FIG. 13B is a current voltage waveform when power is supplied to the second high-load electric device in the car. FIG. 13C shows a current-voltage waveform when power is supplied to the first low-load electric device in the car, and FIG. 13D shows a current-voltage waveform when power is supplied to the second low-load electric device in the car. Each is shown.

  Hereinafter, an example of an embodiment for carrying out the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, components having substantially the same function or configuration are denoted by the same reference numerals, and redundant description is omitted. The attached drawings show specific embodiments and implementation examples based on the principle of the present invention, but these are for understanding the present invention and are not intended to limit the present invention. Not used.

<1. First Embodiment>
[Overall configuration of elevator]
Drawing 1 is an explanatory view showing the example of whole composition of the elevator concerning a 1st embodiment.
FIG. 1 schematically shows only the lowermost floor and the uppermost floor among the floors of the building where the elevator is installed. However, in the present embodiment, the tail is installed for a building having two or more floors. It is applicable to an elevator equipped with a cord (feed line).

  An elevator 100 shown in FIG. 1 is connected to a monitoring device 101 that monitors the presence or absence of an abnormality, and a monitoring center that is connected to the monitoring device 101 via a communication line (not shown) and remotely monitors the state of the elevator 100. (Not shown).

  The elevator 100 includes a hoistway 1 formed in a building, a car 2 that moves up and down in the hoistway 1 of the building, a main rope 3 with one end attached to the car 2, and the other end of the main rope 3 A counterweight 4 attached and suspended in the hoistway 1 is provided. Further, the elevator 100 is provided in a machine room 5 located above the hoistway 1, and a hoisting machine 6 that drives the car 2 and the counterweight 4, and a sled wheel arranged in the vicinity of the hoisting machine 6. 7.

  The elevator 100 further includes a landing door 8A that opens and closes on the landing 8 side and opens and closes the door in conjunction with the door 2d of the car 2 (hereinafter also referred to as "car door"). There is a landing button (not shown) provided on the wall in the vicinity of the elevator and for registering the landing call of the car 2. Any device that can make a landing call is not limited to a landing button, and may be a destination floor registration device, for example.

  In addition, the elevator 100 is provided in the machine room 5 and is installed on the ceiling of the car 2 and a control device 9 that controls the operation of the elevator 100 as a whole, and a power failure of a normal power supply (corresponding to the three-phase AC power supply 10). And an emergency power storage device (battery) (not shown) such as a lithium battery or a capacitor for storing electric power used therein.

  The hoisting machine 6 includes a drive sheave 6A around which the main rope 3 is wound, a motor 6B that rotates the drive sheave 6A, and a brake device (not shown) that brakes the rotation of the drive sheave 6A. The motor 6B and the brake device are electrically connected to the control device 9. Accordingly, the hoisting machine 6 is configured to raise and lower the car 2 relative to the counterweight 4 by operating the motor 6 </ b> B and the brake device in response to a control command from the control device 9.

  Further, an encoder (not shown) that outputs a pulse signal according to the driving of the motor 6B is attached to the output shaft of the motor 6B of the hoisting machine 6, and this encoder is connected to the control device 9 with a communication cable or the like (see FIG. (Not shown). The pulse signal output from the encoder 6 </ b> C is transmitted to the control device 9 and used for calculation for obtaining the position of the car 2.

  The control device 9 controls the raising / lowering operation of the car 2, controls power supply to the car 2, and performs various calculations for controlling the display of the operation screen in the car 2. A configuration showing a specific function of the control device 9 that characterizes the present embodiment will be described in detail later.

  The control device 9 is electrically connected to electrical devices in the car 2 via a flexible tail cord 14 disposed in the hoistway 1, a repeater 15, and a communication cable 16. . Further, the control device 9 causes the car 2 to travel at a lower speed than the normal operation of the elevator 100 when a power failure occurs in the utility power supply, and stops at the nearest floor before the landing door 8A and the car door 2d. The seismic control operation is opened.

  The tail cord 14 has one end connected to the lower portion of the car 2 and the other end connected to the repeater 15, and is suspended in a U shape in the hoistway 1. The repeater 15 is fixed to the wall surface of the hoistway 1, and is a device that relays communication performed between each electric device of the car 2 and the control device 9.

  The car 2 is provided with a door sensor 26 that outputs a detection signal corresponding to the open / closed state of the car door 2d above the car door 2d. In addition, the car 2 is provided with a cooler 11 and a lighting fixture 12 that lower the indoor temperature from the outside air. Moreover, the switchboard is provided in the ceiling back of the car 2, etc., and the electromagnetic contactors 13-1 and 13-2 are arrange | positioned at the switchboard. The magnetic contactors 13-1 and 13-2 have auxiliary contacts and are used to turn on and off the power to the cooler 11 and the lighting fixture 12. It goes without saying that the electric devices installed in the car 2 are not limited to the cooler 11 and the lighting fixture 12.

  The power supply to the electric devices such as the cooler 11 and the lighting fixture 12 is performed by controlling the power supply to the coils of the electromagnetic contactors 13-1 and 13-2. A human sensor 27 is disposed under the floor of the car 2. In the present embodiment, a load sensor is used as the human sensor 27. The human sensor 27 is not limited to a load sensor, and a surveillance camera can also be used.

  Similar to the control device 9, the monitoring device 101 monitors whether the elevator 100 is abnormal. The monitoring device 101 is electrically connected to the control device 9, and determines whether an abnormality such as a power failure or failure has occurred in the elevator 100 based on a control command output from the control device 9. For example, when a control command for seismic control operation is output from the control device 9 to the hoisting machine 6, the monitoring device 101 detects the control command for seismic control operation and determines that an abnormality has occurred in the elevator 100. Then, the monitoring device 101 sends an abnormality notification to the monitoring center that an abnormality has occurred in the elevator 100.

[Elevator electrical system]
FIG. 2 is an explanatory diagram showing an outline of the electric system of the elevator 100.
As shown in FIG. 2, the three-phase AC power supply 10 (expressed as a single-phase AC power supply in FIG. 2) includes a high-load electric device (hereinafter referred to as “high-load electric power”) that generates an inrush current when the cooler 11 or the like is started. A low-load electric device (hereinafter also referred to as “low-load electric device”) that does not generate an inrush current, such as the lighting fixture 12, is connected via the same tail cord 14. Even if an inrush current occurs, if the peak current value is relatively small and has little influence on the entire circuit, it may be classified as a low-load device.

  Here, the wire cores 14a and 14b constituting the tail cord 14 have the number of wire cores for supplying power to the cooler 11 in which an inrush current is generated at startup. That is, the wire cores 14a and 14b can be said to be an assembly of a plurality of wire cores. In the present embodiment, power supply to the luminaire 12 having a low load is performed by delaying the start timing from the cooler 11 and sharing the same tail cord 14. For this reason, this embodiment has a tail cord (wire core) for the cooler 11 in which an inrush current is generated and a tail cord (wire core) for the luminaire 12 having a low load. It is possible to reduce the number of cores required for the tail cord 14 as a whole.

  An auxiliary contact (an example of a first switch) SW1 of the electromagnetic contactor 13-1 is connected on the transmission path connecting the tail cord 14 and the cooler 11. Further, an auxiliary contact (an example of a second switch) SW2 of the electromagnetic contactor 13-2 is connected on the transmission path connecting the tail cord 14 and the lighting fixture 12. Hereinafter, this auxiliary contact is referred to as a “switch”. The power supply to the electric devices such as the cooler 11 and the lighting fixture 12 is performed by controlling the power supply to the coils of the electromagnetic contactors 13-1 and 13-2. Turning on the switch SW1 turns on the power to the cooler 11 (power on), and turning off the switch SW1 shuts off the power to the cooler 11 (power off). Also, turning on the switch SW2 turns on the power to the lighting fixture 12 (powering on), and turning off the switch SW2 shuts off the power to the lighting fixture 12 (powering off).

[Internal configuration of control device]
FIG. 3 is a block diagram illustrating an internal configuration example of the control device 9.
As shown in FIG. 3, the control device 9 includes a call detection unit 21, a door state determination unit 22, a timing control unit 23, a power-on unit 24, and an electrical device table 25.

  The call detection unit 21 detects a hall call signal from the landing button, and notifies the timing control unit 23 that there is a hall call. In a group management elevator equipped with a group management device (not shown) that manages the operation of a plurality of cars, group management is performed based on a destination floor registration signal of a destination floor registration device (not shown) installed in the hall. The device may send a call signal to the control device 9.

  The door state determination unit 22 receives a detection signal according to the open / closed state of the car door 2d output from the door sensor 26 of the car door 2d, and determines the open state and the closed state of the car door 2d from the detection signal. The door state determination unit 22 sends the determination result regarding the state of the car door 2d to the timing control unit 23.

  The timing control unit 23 refers to the electrical device table 25, starts a high-load electrical device (for example, the cooler 11) that generates an inrush current at the start, and after the load current shifts to a steady state, the inrush current is The timing for starting a low-load electric device (for example, the lighting fixture 12) that does not occur is determined. In the electrical device table 25, a plurality of electrical devices installed in the car 2 and the magnitude of the load (presence of inrush current) are registered in association with each other. Then, the timing control unit 23 transmits a timing signal for turning on the power to each electric device or shutting off the power of each electric device to the power on unit 24. As described above, the timing control unit 23 refers to the electrical device table 25 as described above, and determines the activation timing of each electrical device according to the rules of the present invention. In addition, activation order information (not shown) that defines the activation order of each electrical device is recorded in the memory in advance in the electrical device table 25, and the timing control unit 23 determines the activation timing of each electrical device according to the activation order information. The timing signal may be transmitted to the power-on unit 24 after setting.

  The power-on unit 24 receives a timing signal for powering on each electric device from the timing control unit 23, and energizes a coil of an electromagnetic circuit breaker having a switch corresponding to the corresponding electric device based on this timing signal. To do. The switch corresponding to the corresponding electric device is turned on, and the electric device is turned on.

[Electrical equipment table]
FIG. 4 is an explanatory diagram illustrating an example of the electrical device table according to the first embodiment.
The electric device table 25 illustrated in FIG. 4 includes items of “electric device name”, “load (presence / absence of inrush current)”, and “switch”. “Electrical equipment name” is the name of the electrical equipment installed in the car 2. Instead of the name of the electric device, identification information for uniquely identifying the electric device may be used. The “load” is classified as a high load if an inrush current is generated when the target electric device is started, and is classified as a low load if an inrush current is not generated at the start. The “switch” is a name or identification information of a switch for supplying power to the target electrical device. In the present embodiment, this switch corresponds to a contact point of the electromagnetic contactors 13-1 and 13-2. In the electrical equipment table 25, a plurality of electrical equipments and the presence or absence of inrush current may be registered in association with each other. The correspondence between the electric device and the switch may be registered in a separate table.

[Hardware configuration]
FIG. 5 is a block diagram illustrating a hardware configuration example of a computer included in the control device 9.

  Here, the hardware structural example of the computer 30 with which the control apparatus 9 shown by the elevator 100 mentioned above is provided is demonstrated. In addition, each part of the computer 30 is selected according to the function of the control apparatus 9, and the intended purpose. For example, the display unit 35 and the operation unit 36 may be deleted.

  The computer 30 includes a CPU (Central Processing Unit) 31, a ROM (Read Only Memory) 32, and a RAM (Random Access Memory) 33 respectively connected to the bus 34. Further, the computer 30 includes a display unit 35, an operation unit 36, a nonvolatile storage 37, and a network interface 38.

  The CPU 31 is an example of a control unit, and reads out the program code of software that realizes each function according to the present embodiment from the ROM 32 and executes it. The function as the control device 9 is realized by the cooperation of these hardware and software. The computer 30 may include a processing device such as an MPU (Micro-Processing Unit) instead of the CPU 31. In the RAM 33, variables, parameters, and the like generated during the arithmetic processing are temporarily written.

  The display unit 35 is a liquid crystal display monitor, for example, and displays a result of processing performed by the computer 30. For example, a keyboard, a mouse, a touch panel, or the like is used as the operation unit 36, and a user can perform predetermined operation inputs and instructions.

  Examples of the non-volatile storage 37 include a hard disk drive (HDD), a solid state drive (SSD), a flexible disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, and a non-volatile memory card. Used. The nonvolatile storage 37 may store a program for causing the computer 30 to function in addition to an OS (Operating System) and various parameters. For example, the non-volatile storage 37 stores an electrical device table 25 and the like.

  For example, a network interface card (NIC) or the like is used as the network interface 38, and various types of data can be transmitted and received between devices via a network N such as a LAN.

[Procedure for power supply control processing method]
FIG. 6 is a flowchart illustrating an example of a procedure of a process for controlling power supply to electric devices in the car 2 when the elevator 100 is activated.

  As shown in FIG. 6, the elevator 100 is in a standby state before the hall call is generated (S1), the car door 2d is closed, and the cooler 11 and the lighting fixture 12 installed in the car 2 are turned off. It is in the state that was. In this standby state, the call detection unit 21 of the control device 9 determines whether or not there is a hall call from the landing button (S2). When there is no hall call (NO in S2), the call detection unit 21 proceeds to the process of step S1 and continues the standby state.

  On the other hand, when there is a hall call (YES in S2), the timing control unit 23 refers to the electrical equipment table 25 and sends a timing signal for starting the cooler 11 to the power-on unit 24 as a first stage. Switch SW1 is turned on. Thereby, electric power is supplied to the cooler 11 in which an inrush current is generated at the time of activation, and the cooler 11 is activated (S3).

  Next, as a second stage, the timing control unit 23 sends a timing signal for starting the lighting fixture 12 to the power-on unit 24 to turn on the switch SW2. Thereby, electric power is supplied to the luminaire 12 that does not generate an inrush current at the time of activation, and the luminaire 12 is activated (S4). At this time, the timing control unit 23 controls the activation timing of the luminaire 12 so that the luminaire 12 is activated after the cooler 11 is activated and transitions to a steady state. That is, the timing control unit 23 activates the lighting fixture 12 after a set time has elapsed since the cooler 11 was activated.

  Then, the control device 9 moves the car 2 to the floor (calling floor) where the hall call is made, opens the car door 2d (S5), and then shifts to the normal service of the elevator 100 (S6). . The car 2 may be moved in parallel with the power-on process for each electric device in steps S3 and S4.

  In a situation where there is no hall call after the transition to the normal service, the timing control unit 23 determines whether or not the car door 2d is in a closed state from the determination result by the door state determination unit 22 (S7). When the car door 2d is closed, a car door close signal is output from the door sensor 26, so the door state determination unit 22 can determine whether or not the car door 2d is closed. When the car door 2d is not in the closed state (NO in S7), the timing control unit 23 continues to monitor the open / closed state of the car door 2d.

  Conversely, when the car door 2d is in the closed state (YES in S7), the timing control unit 23 determines whether there is a passenger in the car 2 based on the detection result of the human sensor 27. (S8). For example, in the case where the human sensor 27 is a load sensor, the timing control unit 23 calculates how much of the loaded load the load applied to the floor of the current car 2 from the measurement result of the load sensor. If the measured load is not 0% of the loaded load (there is a passenger in the car 2) (NO in S8), the timing control unit 23 proceeds to the process in step S6 and continues the normal service.

  On the other hand, when the measured load is 0% of the loaded load (there is no passenger in the car 2) (YES in S8), the timing control unit 23 turns off the switch SW1 and turns off the power of the cooler 11. At the same time (S9), the switch SW2 is turned off to turn off the lighting device 12 (S10). After the processes of steps S9 and S10 are completed, the process of this flowchart is terminated.

[Current voltage waveform]
Next, a power supply control processing method for the electric devices in the car 2 when the elevator 100 is started will be described with reference to FIG.

  FIG. 7 is a current-voltage waveform diagram showing a power supply control processing technique for the electric devices in the car 2 when the elevator 100 is started (S3 and S4 in FIG. 6). FIG. 7A shows a current-voltage waveform when power is supplied to a high-load electric device (cooler 11 in this example) in the car 2, and FIG. 7B shows power to a low-load electric device (lighting fixture 12 in this example). The current voltage waveform when it supplies is shown.

Procedure for the power supply to the electrical equipment in the car 2, first, in a first step, the rush current I ₁ activates the cooler 11 which generates and supplies power at startup (Fig. 7A). Next, in the second stage, the light fixture 12 having a low load is activated to supply power (FIG. 7B).

As shown in FIG. 7A (a1), when the cooler 11 to the rush current I ₁ by turning on the switch SW1 is generated by activating perform power supply, a large rush current I ₁ relatively from the first stage tail code 14 Begins to flow. Then, after the set time has elapsed, the load current becomes a stable steady current, and an approximately constant voltage drop occurs as shown in FIG. 7A (a2).

Then, as shown in FIG. 7B (b1), in a second stage of the rush current I ₁ becomes stable steady state current and supplies power to and turns on the switch SW2 to activate the luminaire 12 is a low-load . At this time, the inrush current as in the case of the cooler 11 does not flow. Therefore, as shown in FIG. 7B (b2), even if the operation of the cooler 11 and the lighting fixture 12 is continued and the load current in which these currents are superimposed on the tail cord 14 is supplied, The supply voltage does not fall below the target voltage Vt, resulting in a relatively gentle voltage drop. The target voltage Vt is the lowest operating voltage of a plurality of electric devices that share a plurality of cores of the tail cord 14, and is a value obtained by summing the rated voltages of the plurality of electric devices or a value larger than that.

Temporarily, the number of wire cores required to correspond to the inrush current I ₁ at the start of the cooler 11 is 10, the number of wire cores required in the steady state is 5, and the number of wire cores required for the lighting fixture 12 is Assume that there are three. When the cooler 11 and the luminaire 12 are activated at the same time, 15 wire cores are required. However, when the luminaire 12 is activated after the cooler 11 shifts to a steady state, only eight wire cores are used. .

  According to the above-described embodiment, the electric device (load) in the car 2 sharing the same power source is divided into a high load electric device that generates an inrush current such as the cooler 11 and a low load such as the lighting fixture 12. Classify into electrical equipment. First, the high-load electric device (cooler 11) is activated, and after supplying power through the tail cords 14 (14a, 14b), the activation timing is shifted to activate the low-load electric device (lighting fixture 12). Power is supplied through the same tail cord 14. For this reason, the core of the tail cord 14 for a low-load electric device that does not generate an inrush current can be shared with the core of a high-load electric device that generates an inrush current at startup. Thereby, the number of cores for low-load electrical equipment can be substantially reduced as the entire tail cord 14.

  Therefore, according to the first embodiment, it is possible to reduce the cost and reduce the energy consumption by reducing the number of the cores of the tail cord 14 with a simple configuration in which a high-load electrical device that generates an inrush current is activated before the low-load electrical device. Can be expected. Further, it is possible to expect a reduction in the size and cost of associated devices (such as the counterweight 4 and the hoisting machine 6 in FIG. 1) by reducing the weight of the tail cord 14.

<2. Second Embodiment>
The second embodiment is an example in which the present invention is applied to a double deck type elevator provided with two passenger cars connected vertically in the same hoistway.

[Elevator electrical system]
FIG. 8 is an explanatory diagram showing an outline of the electrical system of the double deck type elevator 100 according to the second embodiment. In FIG. 8, the configurations of the upper car 2 </ b> A and the lower car 2 </ b> B are the same as the configuration of the car 2. The internal configuration of the control device 9 is the same as the internal configuration of FIG.

  As shown in FIG. 8, the three-phase AC power supply 10 includes a high-load electric device that generates an inrush current at the time of start-up, such as a cooler (hereinafter referred to as “upper cage cooler”) 11 </ b> A in the upper cage 2 </ b> A, A low-load electric device that does not generate an inrush current, such as a fixture (hereinafter referred to as “upper basket lighting fixture”) 12 </ b> A, is connected via the same tail cord 14. Hereinafter, the high-load electric device of the upper car 2A may be referred to as “upper-car high-load electric device”, and the low-load electric device of the upper car 2A may be referred to as “upper-car low-load electric device”.

  Also, the same tail cord 14 includes a high-load electric device that generates an inrush current at startup, such as a cooler (hereinafter referred to as “lower cage cooler”) 11B in the lower cage 2B, and a lighting device (hereinafter referred to as “lower” in the lower cage 2B). A low load electrical device such as 12B) is connected. In the following description, the high load electric device of the lower car 2B may be referred to as “lower car high load electric device”, and the low load electric device of the lower car 2B may be referred to as “lower car low load electric device”.

  Here, the number of the wire cores 14a and 14b constituting the tail cord 14 is such that power is supplied to the upper car cooler 11A and the lower car cooler 11B in which an inrush current is generated at the time of start, with the start timing being shifted. have. The tail cord 14 also supplies power to the upper car illuminating device 12A or the lower car illuminating device 12B by shifting the start timing from the upper car cooler 11A or the upper car cooler 11B that generates an inrush current. have.

  An auxiliary contact (first switch) SW1 of an electromagnetic contactor is connected on a transmission path connecting the tail cord 14 and the upper car cooler 11A. In addition, an auxiliary contact (second switch) SW2 of an electromagnetic contactor is connected on a transmission path connecting the tail cord 14 and the upper car lighting fixture 12A. Similarly, an auxiliary contact (third switch) SW3 of an electromagnetic contactor is connected on the transmission path connecting the tail cord 14 and the lower car cooler 11B. Further, an auxiliary contact (fourth switch) SW4 of an electromagnetic contactor is connected on the transmission path connecting the tail cord 14 and the lower car lighting fixture 12B.

  The control device 9 turns on / off the switches SW1 to SW4 as appropriate to turn on (power on) the upper car cooler 11A, the upper car lighting device 12A, the lower car cooler 11B, and the lower car lighting device 12B. Or power off (power off). Corresponding to each of the switches SW1 to SW4, four electromagnetic contactors are installed on the ceiling of the car 2 or the like.

[Procedure for power supply control processing method]
FIG. 9 is a flowchart illustrating an example of a procedure of a power supply control processing method for the electric devices in the upper car and the lower car when the elevator 100A is activated.

  In FIG. 9, the elevator 100A is in a standby state before a hall call is generated (S21). The car doors 2d of the upper car 2A and the lower car 2B are closed, and the upper car cooler 11A, the upper car lighting device 12B, the upper car lighting device 12A, and the lower car lighting device 12B installed in the upper car 2A and the lower car 2B, respectively. The power is turned off. In this standby state, the call detection unit 21 of the control device 9 monitors the hall call from the landing button (S22), and if the hall call is not detected (NO in S22), the call detection unit 21 performs step S21. Transition to processing and continue the standby state.

  If a hall call is detected in this standby state (YES in S22), it is determined whether the hall call is for the upper car 2A and / or the hall call for the lower car 2B (S23, S24). As a result, if it is a hall call only for the upper car 2A (YES in S23 and NO in S24), as a first step, the timing control unit 23 turns on the switch SW1 and sets the upper car cooler 11A that generates an inrush current. Start (S25). Next, as a second stage, the timing control unit 23 turns on the switch SW2 to activate the upper car lighting device 12A having a low load (S26).

  On the other hand, if it is a hall call only for the lower car 2B (NO in S23), as a first step, the timing control unit 23 turns on the switch SW3 to activate the lower car cooler 11B that generates an inrush current (S27). ). Next, as a second stage, the timing control unit 23 turns on the switch SW4 to activate the lower car lighting fixture 12B having a low load (S28).

  However, if it is a hall call for both the upper car 2A and the lower car 2B (YES in S23 and YES in S24), the following sequence of start-up processes is taken. As a first stage, the timing controller 23 turns on the switch SW1 to start the upper car cooler 11A that generates an inrush current (S25), and then, as a second stage, the upper car cooler 11A shifts to a steady state. After that, the switch SW2 is turned on to activate the upper car lighting fixture 12A having a low load (S26). Further, as a third stage, the timing control unit 23 turns on the switch SW3 to start the lower car cooler 11B that generates an inrush current (S27), and then the lower car cooler 11B shifts to a steady state. As a fourth step, the switch SW4 is turned on to activate the lower car lighting fixture 12B having a low load (S28).

  Then, the control device 9 moves the cars 2A and 2B to the floor (calling floor) where the hall call is made and opens the car door 2d corresponding to the hall call and / or the car door 2d of the car 2B. (S29, S30), and then the elevator 100A shifts to a normal service (S31). The cars 2A and 2B may be moved in parallel with the power-on process for the electric devices in steps S29 and S30.

  In a situation where there is no hall call after the transition to the normal service, the timing control unit 23 monitors the open / closed state of the car door 2d based on the determination result of the door state determination unit 22 with respect to the lower car 2B (S32) and the human sensor The presence or absence of passengers in the lower car 2B is monitored by 27 (a load sensor in this example) (S33). Here, when the car door 2d of the lower car 2B is in the closed state (YES in S32) and there are no passengers in the lower car 2B (YES in S33), the timing control unit 23 turns off the switch SW3 and lowers the switch SW3. The car cooler 11B is turned off (S36), and the switch SW4 is turned off to turn off the lower car lighting fixture 12B (S37).

  Similarly, in the situation where there is no hall call after shifting to the normal service for the upper car 2A, the timing control unit 23 monitors the open / closed state of the car door 2d based on the determination result of the door state determination unit 22 for the upper car 2A. Together with (S34), the presence / absence of passengers in the upper car 2A is monitored by the motion sensor 27 (S35). Here, when the car door 2d of the upper car 2A is in a closed state (YES in S34) and there is no passenger in the upper car 2A (YES in S35), the timing control unit 23 turns off the switch SW1 and moves up. The car cooler 11A is turned off (S38), and the switch SW2 is turned off to turn off the upper car lighting fixture 12A (S39).

  When the car door 2d of the lower car 2B is not in the closed state (NO in S32), the timing control unit 23 continues to monitor the open / closed state of the car door 2d. Similarly, when the car door 2d of the upper car 2A is not in the closed state (NO in S34), the timing control unit 23 continues to monitor the open / closed state of the car door 2d.

  In addition, when there are passengers in the lower car 2B (in this example, the measured load is not 0% of the loaded load) (NO in S33), the timing control unit 23 proceeds to the process of step S31 and normally Continue service. Similarly, when there are passengers in the upper car 2A (NO in S35), the timing control unit 23 proceeds to the process of step S31 and continues the normal service.

  The timing control unit 23 ends the processing of this flowchart after the processing of Step S36 and Step S37 is completed, or after the processing of Step S38 and Step S39 is completed.

  If only the electric device on the upper car 2A side including the activation of the upper car cooler 11A in which the inrush current is generated is activated, the power supply control process is performed in steps 25 and S26 as in the case of the first embodiment. Further, if only the electric device on the lower car 2B side including the activation of the lower car cooler 11B in which an inrush current is generated, the power supply control process is performed in steps 27 and S28 as in the case of the first embodiment. Do. However, a case will be described here where both the upper car 2A side and the lower car 2B side electric devices are activated.

[Current voltage waveform]
Next, a method for controlling the power supply to the electric devices in the upper car 2A and the lower car 2B when the elevator 100A is started will be described with reference to FIG.

  FIG. 10 is a current-voltage waveform diagram showing a power supply control processing technique for the electric devices in the car 2 when the elevator 100A is activated (S25 to S28 in FIG. 9). FIG. 10A shows a current-voltage waveform when power is supplied to the high-load electric equipment (upper car cooler 11A) of the upper car, and FIG. 10B shows when power is supplied to the low-load electric equipment (upper car lighting fixture 12A) of the upper car. The current voltage waveform is shown. FIG. 10C shows a current-voltage waveform when power is supplied to the high-load electric equipment (lower car cooler 11B) of the lower car, and FIG. 10D shows when electric power is supplied to the low-load electric equipment (lower car lighting fixture 12B) of the lower car. The current voltage waveforms are respectively shown.

Procedure for the power supply to the respective electric devices of the upper car 2A and the lower car 2B, first, in a first step, the rush current I ₁ activates the on squirrel cooler 11A that generates and supplies power at startup. As shown in FIG. 10A (a1), when it on either your cooler 11A activates the rush current I ₁ by turning on the switch SW1 is generated to supply power, a relatively large inrush current I ₁ flows from the first stage First, after that, the load current becomes a stable steady current, and an approximately constant voltage drop occurs as shown in FIG. 10A (a2).

Then, as shown in FIG. 10B (b1), in a second stage of the rush current I ₁ becomes stable steady current activates the on squirrel luminaire 12A is a low load by turning on the switch SW2 power supply I do. At this time, the inrush current does not flow as in the case of the upper car cooler 11A. Therefore, as shown in FIG. 10B (b2), even if the operation of the upper car cooler 11A and the upper car lighting device 12A is continued and a load current in which these currents are superimposed on the tail cord 14 is supplied, the car The supply voltage to the side does not fall below the target voltage Vt, resulting in a relatively gentle voltage drop.

  In this way, the electric equipment (load) in the upper car 2A sharing the same power source is classified into a high load electric equipment that generates an inrush current such as the upper car cooler 11A and a low load electric equipment such as the lighting fixture 12A. To do. First, the high-load electric device (upper car cooler 11A) is started up, and power is supplied through the tail cords 14 (14a, 14b). Then, the start-up timing is shifted and the low-load electric device (upper car lighting device 12A) is turned on. It is activated and power is supplied through the same tail cord 14. For this reason, the tail cord 14 is shared, and the number of wire cores for the low-load electric device can be substantially reduced from the number of wire cores of the tail cord 14 as a whole.

Then, in a third stage, the rush current I ₂ by turning on the switch SW3 activates the Shita squirrel cooler 11B for generating supply power. As shown in FIG. 10C (c1), when activates your cooler 11B or Shita inrush current I ₂ is generated to supply power, beginning a relatively large inrush current I ₂ flows in the third stage, then, the load current Becomes a stable steady current, and a substantially constant voltage drop occurs as shown in FIG. 10C (c2).

Then, as shown in FIG. 10D (d1), in the fourth stage of the rush current I ₂ becomes stable steady state current, activates your luminaire 12B or Shita a low load by turning on the switch SW4 power supply I do. At this time, no inrush current flows as in the case of the lower car cooler 11B. Therefore, as shown in FIG. 10D (d2), the operations of the upper car cooler 11A and the upper car lighting device 12A, and the lower car cooler 11B and the lower car lighting device 12B are continued. Even if a load current in which these currents are superimposed on the tail cord 14 is supplied, the supply voltage to the car side does not fall below the target voltage Vt, resulting in a relatively gentle voltage drop.

  Alternatively, between the switch SW1 and the switch SW2 and between the switch SW3 and the switch SW4, in a long time so as to ensure that the high load electric equipment (the upper car cooler 11A and the lower car cooler 11B) is in a steady state. It may be set.

Thus, even in the double deck type elevator 100A, the electric equipment (load) in the upper cars 2A and 2B sharing the same power source is used as an upper car high load electric equipment and a lower car height that generate an inrush current like a cooler. It is divided into load electric equipment, upper cage low load electric equipment such as lighting equipment, and lower car low load electric equipment. Then, by shifting the start timing of each electric device with priority given to the high load electric device as described above, the center of the tail cord 14 for the low load electric device in the upper and lower cars where no inrush current is generated can be obtained. It can be shared with the wire cores for the high load electric equipment of the upper car and the lower car that generate an inrush current at the time of starting. As a result, the number of wire cores for the low-load electric devices of the upper car and the lower car can be substantially reduced as the entire tail cord 14. In this case, in consideration of the voltage drop of the first stage and the second stage (voltage drop Vd _{1 in} FIG. 10C) and the voltage drop due to the inrush current of the third stage lower cage high voltage electrical equipment, What is necessary is just to determine the number of wire cores.

  Therefore, in the second embodiment, similarly to the first embodiment, it is possible to expect the cost reduction and energy saving effect of the elevator 100A, and it is possible to reduce the size and cost of the associated equipment by reducing the weight of the tail cord 14. Can be expected.

  In the second embodiment, the sequence of the power supply control process is divided into four stages, but the present invention is not limited to this example. For example, when the upper car 2A and the lower car 2B are always serviced simultaneously, the start timings shown in FIG. 10B (b1) and FIG. 10C (c1) are interchanged, and also shown in FIG. 10B (b1) and FIG. 10D (d1). The same effect can be obtained even if the activation timing is set at the same time. However, also in this case, in order to prevent the supply voltage to the car side from falling below the target voltage Vt, it is avoided to simultaneously start the upper car cooler 11A and the lower car cooler 11B that generate an inrush current. Further, simultaneous activation of the upper car cooler 11A or the lower car cooler 11B in which an inrush current is generated and the upper car illuminator 12A or the lower car illuminator 12B having a low load is also avoided.

<3. Third Embodiment>
The third embodiment is an example in which the present invention is applied to an elevator in which a plurality of high-load electric devices are installed in a single car.

[Elevator electrical system]
FIG. 11 is an explanatory diagram illustrating an outline of an electric system of the elevator 100 according to the third embodiment. The car 2 shown in FIG. 11 has the same configuration as that of FIG. 2 except that a plurality of high-load electric devices (first cooler 11-1 and second cooler 11-2) are installed. The internal configuration of the control device 9 is the same as that shown in FIG.

  As shown in FIG. 11, in the same car 2, the first cooler 11-1 and the second cooler 11-2 are used as high load electric devices that generate an inrush current, and the first lighting device 12- is used as a low load electric device. 1 and the 2nd lighting fixture 12-2 are installed. Each of these electric devices is connected to the three-phase AC power supply 10 via the same tail cord 14.

  Here, the wire cores 14a and 14b constituting the tail cord 14 are wire cores that are used by shifting the start timing of power supply to the first cooler 11-1 and the second cooler 11-2 in which an inrush current is generated. Have a number. Further, the tail cord 14 shifts the start timing of the power supply to the first cooler 11-1 or the second cooler 11-2 and the first lighting fixture 12-1 or the second lighting fixture 12-2 that is low in load. It has a number of cores to do.

[Procedure for power supply control processing method]
FIG. 12 is a flowchart illustrating an example of a procedure of a power supply control processing method for electric devices in the car 2 when the elevator 100 is started. The processes in steps S41, S42, S47 to S50 in FIG. 12 correspond to the processes in steps S1, S2, S5 to S8 in FIG. Moreover, in the point which turns off the power supply of an electric equipment, the process of FIG.12 S51-S54 respond | corresponds to the process of FIG.6 S9, S10.

  In FIG. 12, the elevator 100 is in a standby state before a hall call is generated (S41). The car doors 2d of the car 2 are closed, and the power sources of the first cooler 11-1 and the second cooler 11-2, the first lighting device 12-1 and the second lighting device 12-2 installed in the car 2 are respectively. Is cut off. In this standby state, the call detection unit 21 of the control device 9 monitors the hall call from the landing button (S42), and if the hall call is not detected (NO in S42), the call detection unit 21 performs step S41. Transition to processing and continue the standby state.

  When a hall call is detected in this standby state (YES in S42), the timing control unit 23 performs a series of startup processes in which the startup timing of each electrical device is shifted. First, as a first stage, the timing control unit 23 turns on the switch SW1 to activate the first cooler 11-1 that generates an inrush current at the time of activation and supplies power (S43). Thereafter, as a second stage, the timing control unit 23 turns on the switch SW2 and activates the second cooler 11-2 that generates an inrush current at the time of activation (S44). As a subsequent third stage, the timing control unit 23 turns on the switch SW3 to activate the first lighting fixture 12-1 having a low load and supply power (S45). As a fourth stage, the switch SW4 is similarly switched. It turns on and starts the 2nd lighting fixture 12-2 which is low load, and supplies electric power (S46).

  Then, the control device 9 moves the car 2 to the floor (calling floor) where the hall call is made, opens the car door 2d (S47), and then shifts to the normal service of the elevator 100 (S48). .

  In the situation where there is no hall call after the transition to the normal service, the timing control unit 23 monitors the open / closed state of the car door 2d of the car 2 (S49), and the presence / absence of passengers in the car 2 is detected by the motion sensor 27. Monitor (S50). Here, when the car door 2d of the car 2 is in the closed state (YES in S49) and there are no passengers in the car 2 (YES in S50), the timing control unit 23 turns off the switches SW1 and SW2. Then, the power supply of the first cooler 11-1 and the second cooler 11-2 is turned off (S51, S52). In addition, the timing control unit 23 turns off the switches SW3 and SW4 to turn off the first lighting fixture 12-1 and the second lighting fixture 12-2 (S53, S54).

  In addition, when there are passengers in the car 2 (in this example, the measured load is not 0% of the loaded load) (NO in S50), the timing control unit 23 proceeds to the process of step S48 and normally Continue service. The timing control unit 23 ends the process of this flowchart after the processes of steps S51 to S54 are completed.

[Current voltage waveform]
Next, a power supply control processing method for the electric devices in the car 2 when the elevator 100 is started will be described with reference to FIG.

  FIG. 13 is a current-voltage waveform diagram showing a method for controlling the power supply to the electric devices in the car 2 when the elevator 100 is started (S43 to S46 in FIG. 12). FIG. 13A shows a current-voltage waveform when power is supplied to the first high-load electric device (first cooler 11-1) in the car 2, and FIG. 13B shows a second high-load electric device (in the car 2). The current voltage waveform when electric power is supplied to the 2nd cooler 11-2) is shown. FIG. 13C shows a current-voltage waveform when power is supplied to the first low-load electric device (first lighting fixture 12-1) in the car 2, and FIG. 13D shows a second low-load electric device in the car 2. Current voltage waveforms when power is supplied to (second lighting fixture 12-2) are shown.

Procedure for the power supply to the respective electric devices in the car 2, first, in a first step, to supply power activates the first cooler 11-1 to the rush current I ₁ by turning on the switch SW1 is generated . As shown in FIG. 13A (a1), when activates the first cooler 11-1 to the rush current I ₁ is generated to supply power, beginning a relatively large inrush current I ₁ flows from the first stage, then, The load current becomes a stable steady current, and an approximately constant voltage drop occurs as shown in FIG. 13A (a2).

Then, as shown in FIG. 13B (b1), in a second stage of the rush current _{I 1} becomes stable steady state current, the second cooler 11-2 similarly rush current _{I 2} by turning on the switch SW2 is generated Start and supply power. Then, in the second stage, a relatively large inrush current I ₂ starts to flow, and then the load current becomes a stable steady current, and an approximately constant voltage drop occurs as shown in FIG. 13B (b2).

  Thereafter, in the third stage where the steady current has been reached, the switch SW3 is turned on to activate the first lighting fixture 12-1 having a low load to supply power. At this time, no inrush current flows as in the case of the first cooler 11-1 and the second cooler 11-2. Therefore, as shown to FIG. 13C (c1), the driving | operation of the 1st cooler 11-1, the 2nd cooler 11-2, and the 1st lighting fixture 12-1 is continued. Even if a load current in which these currents are superimposed on the tail cord 14 is supplied, as shown in FIG. 13C (c2), the supply voltage to the car 2 side does not fall below the target voltage Vt and is relatively gentle. Voltage drop.

  Further, in the subsequent fourth stage, the switch SW4 is turned on to activate the second lighting fixture 12-2, which is also low in load, to supply power. At this time, no inrush current flows as in the case of the first cooler 11-1 and the second cooler 11-2. Therefore, as shown to FIG. 13D (d1), the driving | operation of the 1st cooler 11-1, the 2nd cooler 11-2, and the 1st lighting fixture 12-1 is continued. Even if a load current in which these currents are superimposed on the tail cord 14 is supplied, as shown in FIG. 13D (d2), the supply voltage to the car 2 side does not fall below the target voltage Vt and is relatively gentle. Voltage drop.

  It should be noted that the switch-on intervals of the switches SW1 to SW4 may be a fixed set time. Alternatively, between the switch SW1 and the switch SW2 and between the switch SW2 and the switch SW3, the high load electrical devices (the first cooler 11-1 and the second cooler 11-2) are surely in a steady state. A longer time may be set.

  According to the third embodiment described above, the electrical equipment (load) in the car 2 that shares the same power source generates a high inrush current such as the first cooler 11-1 and the second cooler 11-2. The load electric devices are classified into low load electric devices such as the first lighting device 12-1 and the second lighting device 12-2. As described above, priority is given to the high-load electric device and the start timing of each electric device is shifted, so that the inrush current at the start of the tail cord 14 for the low-load electric device that does not generate an inrush current can be reduced. It can be shared with the wire core for the generated high load electric equipment. Thereby, the number of wire cores for low-load electrical equipment can be substantially reduced as a whole of the tail cord 14.

Therefore, in the third embodiment, similarly to the first and second embodiments, it is possible to expect the cost reduction and energy saving effect of the elevator 100, and the size of the associated equipment can be reduced by reducing the weight of the tail cord 14. Cost reduction can be expected. Further, in the present embodiment, since the voltage drop Vd ₂ before starting the second cooler 11-2 only voltage drop in the steady state of the first cooler 11-1, the same conditions of the second embodiment less than the voltage drop Vd _1. Therefore, the present embodiment has a greater effect of reducing the number of wire cores of the tail cord 14 than the second embodiment by the amount of the voltage drop difference (Vd ₁ −Vd ₂ ).

  In the second embodiment, the sequence of the power supply control process is divided into four stages, but the present invention is not limited to this example. For example, when the activation timings shown in FIG. 13B (b1) and FIG. 13C (c1) are interchanged and when the activation timings shown in FIG. 13C (c1) and FIG. Can be obtained. However, also in this case, in order to prevent the supply voltage to the car side from falling below the target voltage Vt, avoid simultaneously starting the first cooler 11-1 and the second cooler 11-2 in which an inrush current is generated. Moreover, it is also avoided that the first cooler 11-1 or the second cooler 11-2 in which the inrush current is generated and the first lighting fixture 12-1 or the second lighting fixture 12-2 having a low load are started simultaneously.

  Moreover, in each embodiment mentioned above, although the cooler was illustrated as a high load electric equipment which a rush current generate | occur | produces at the time of starting, and the lighting fixture was illustrated as a low load electric apparatus, it is not limited to this. For example, as an electrical device that generates an inrush current, an air conditioner or fan that uses an electric motor that is a winding device, a voltage transformer that is the same winding device, a device having a large-capacity capacitor, or the like is applied. Further, as the low-load electric device, for example, a display panel, a button lamp, a printed board, an analog / digital converter, etc. installed in a car are applied. Moreover, although the auxiliary contact of the electromagnetic contactor was used as a switch, other switch means may be used.

  Further, regarding the power supply wiring of the electric equipment of the car, the conductor resistance of the wiring increases as the wiring length from the control device 9 to these electric equipments increases. Therefore, the conductor resistance is increased by increasing the number of the cores of the tail cord 14. Must be reduced to prevent malfunction of electrical equipment. In particular, with respect to electrical equipment that generates a large inrush current at the time of startup, a large number of use cores of the tail cord 14 are required, so that in some cases, a tail cord is provided exclusively for a cooler. However, if the use core of the tail cord is added, not only the cost of the tail cord alone is increased, but additional items such as a tail cord suspension mechanism are added, resulting in a significant cost increase. These problems can also be solved by the power supply control processing method of the present invention as exemplified in the first to third embodiments described above.

  Furthermore, the present invention is not limited to the above-described embodiments, and various other application examples and modifications can be taken without departing from the gist of the present invention described in the claims. is there.

  For example, the above-described exemplary embodiments are detailed and specific descriptions of the configuration of the apparatus and the system in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described above. . Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment. In addition, the configuration of another embodiment can be added to the configuration of a certain embodiment. Moreover, it is also possible to add, delete, and replace other configurations for a part of the configuration of each exemplary embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit.

  Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

  DESCRIPTION OF SYMBOLS 2 ... Car, 9 ... Control apparatus, 11 ... Cooler, 12 ... Lighting equipment, 21 ... Call detection part, 22 ... Door state determination part, 23 ... Timing control part, 24 ... Power-on part, 25 ... Electric equipment table, 100 ... Elevator, SW1-SW4 ... Switch

Claims (5)

A control device that supplies electric power to a plurality of the electric devices by using a feeding car that includes a plurality of electric devices and a feeding line composed of a plurality of wire cores,
The control device starts a high-load electric device that generates an inrush current at the time of starting first, and then starts a low-load electric device that does not generate an inrush current after the load current shifts to a steady state. A plurality of electric devices and an electric device table in which the presence or absence of the inrush current is registered in association with each other;
The elevator according to claim 1, wherein the control device determines an order of starting the plurality of electric devices with reference to the electric device table. The car includes an upper car and a lower car connected up and down,
As the electrical device, a first high-load electrical device that generates at least the inrush current in the upper cage and a first low-load electrical device that does not generate the inrush current are disposed, and at least the inrush current is present in the lower cage. A second high-load electric device that is generated and a second low-load electric device that does not generate the inrush current are disposed;
The control device refers to the electrical device table and first activates the first high-load electrical device, then activates the first low-load electrical device, and then activates the second high-load electrical device. The elevator according to claim 1 or 2, wherein the elevator is activated and then the second low-load electric device is activated. As the electrical device, at least a first high-load electrical device and a second high-load electrical device that generate the inrush current in the car, and a first low-load electrical device that does not generate the inrush current are arranged. And
The control device refers to the electrical device table and first activates the first high-load electrical device, then activates the second high-load electrical device, and then activates the first low-load electrical device. The elevator according to claim 1 or 2. A control device that supplies electric power to a plurality of the electric devices by using a feeding line composed of a plurality of wire cores and a car in which a plurality of electric devices are arranged, and an electric power supply method for an elevator comprising:
The control device first starting a high-load electrical device that generates an inrush current at the time of startup; and
The control device includes a step of starting a low-load electric device that does not generate an inrush current after the load current shifts to a steady state.

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