Elevator

An elevator and electric current technology, applied in the field of elevators, can solve problems such as unusable and ineffective use of elevator energy

Inactive Publication Date: 2009-03-11
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As described above, although the power storage device is charged from the user's power supply, the electric power obtained from the charging can be used for operation during a power outage, but cannot be used during power running when there is no power outage.
Therefore, the energy in the elevator cannot be effectively used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] First, Embodiment 1 of the present invention will be described.

[0031] figure 1 The outline of the structure of the elevator in Embodiment 1 of this invention is shown.

[0032] exist figure 1 In the shown elevator, as a drive system, it is equipped with: a user power supply 1 as an external AC power supply, a converter device 2 for converting the AC voltage of the user power supply 1 into a DC voltage, and a device for smoothing the ripple of the DC voltage, that is, the pulsation. A smoothing capacitor 3, an inverter device 4 that converts the DC voltage into an AC voltage with a variable voltage and a variable frequency, and a motor 5 that operates by receiving electric power from the inverter device 4 . Furthermore, a current detector 6 is provided between the user power supply 1 and the inverter device 2 .

[0033] User power supply 1 is a three-phase power supply. The AC voltage generated by the three-phase power supply is full-wave rectified by the conver...

Embodiment approach 2

[0052] Next, Embodiment 2 of the present invention will be described. In addition, in the configuration of the elevator of the present embodiment, for those with figure 1 The parts that are the same as those shown will be omitted from description.

[0053] image 3 A schematic configuration of an elevator according to Embodiment 2 of the present invention is shown.

[0054] The electric storage voltage control device 25 of the elevator according to the second embodiment of the present invention is different from the first embodiment in that it is judged whether it is power running or not based on the direction of the current commanded from the voltage control device 14 when there is no power failure. is still in the regenerative operation, and the charging and discharging of the power storage device 21 is controlled according to the judgment result.

[0055] Next, the operation of the storage voltage control device 25 will be described. Figure 4 The type of operation of ...

Embodiment approach 3

[0060] Next, Embodiment 3 of the present invention will be described. In addition, in the configuration of the elevator of the present embodiment, for those with figure 1 The parts that are the same as those shown will be omitted from description.

[0061] Fig. 5 shows a schematic configuration of an elevator according to Embodiment 3 of the present invention.

[0062] As shown in FIG. 5 , the elevator according to Embodiment 3 of the present invention is different from Embodiment 1 in that a motor current detector 41 is provided between the inverter device 4 and the motor 5 .

[0063] In addition, the elevator of this embodiment is equipped with a motor current control device 42 as a motor current control mechanism, a motor current detection device 43, a speed detection device 44, a speed control device 45 as a speed control mechanism, and a speed command device as a speed command mechanism. 46.

[0064] The motor current detection device 43 detects the current value and ...

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PUM

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Abstract

The invention provides an elevator, wherein an electrical storage voltage control device (25) causes electric power charged into an electrical storage device (21) to be discharged to supply DC buses under the condition that a power failure detection device (26) detects power failure. Under the condition that the direction of the electric current detected by an electric current detection device (11) is the direction from a user electrical source (1) to a convertor device (2), namely, a power running direction, the electrical storage voltage control device (25) is judged as at power running to cause the electric power charged into the electrical storage device (21) to be discharged to supply the DC buses. On the other hand, under the condition that the direction of the electric current detected by the electric current detection device (11) is the direction from the convertor device (2) to the user electrical source (1), namely, a regenerating direction, the electrical storage voltage control device (25) is judged as at regenerating running to charge the electrical storage device (21) to regenerate the electric power.

Description

technical field [0001] The present invention relates to an elevator having a running function during a power failure. Background technique [0002] Figure 12 An outline of the configuration of a conventional elevator is shown. This elevator, as a drive system, is equipped with a user power supply 101, a converter device 102 for converting the AC voltage of the user power supply 101 into a DC voltage, and a smoothing capacitor 103 for smoothing the ripple of the DC voltage, which converts the DC voltage into a voltage An inverter device 104 with variable frequency and variable AC voltage, and a motor 105 operated by receiving electric power from the inverter device 104 . [0003] The user power supply 101 is a three-phase power supply. The AC voltage generated by the three-phase power supply is full-wave rectified by the converter device 102, and smoothed to DC by absorbing the ripple amount by the smoothing capacitor 103. The smoothed direct current is supplied to the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00B66B5/02B66B1/00H01M10/46G01R31/36
CPCY02B50/142Y02B50/00Y02E60/10
Inventor 高崎一彦
Owner TOSHIBA ELEVATOR KK
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