Elevator power saving system and power saving method

A technology for elevators and elevator cars, applied in the directions of elevator energy efficiency, sustainable building, climate sustainability, etc., can solve the problems of long standby time and low elevator operation rate, and achieve the effect of energy saving

Inactive Publication Date: 2011-06-08
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The operating rate of the elevators used in the apartment is low, and the time in the standby state is long. In order to further save energy for the elevators, reducing the standby power consumption is an effective method

Method used

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  • Elevator power saving system and power saving method
  • Elevator power saving system and power saving method
  • Elevator power saving system and power saving method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0060] figure 1 It is a configuration diagram of the power saving system of an elevator according to the first embodiment of the present invention.

[0061] Power is supplied to the motor and the hoist 6 from the power supply 3 through the switch 4 and the power converter 5 . Elevator car 7 and counterweight 9 are suspended by slings 8 and driven by hoist 6 . Such as figure 1As shown, the power converter 5 is composed of a rectifier circuit, a smoothing capacitor, and an inverse conversion circuit (inverter). The power converter 5 is driven and controlled by a drive control section 21 . The actual power converter 5 includes components such as a current sensor not shown, a discharge circuit for suppressing DC overvoltage during regenerative operation, and a noise filter, in addition to the components described above.

[0062] The overall control of the elevator system is performed by the elevator control device 2, which responds to the registration of the elevator hall call...

no. 2 example

[0091] Refer to the following Figure 5 with Image 6 A second embodiment of the present invention will be described.

[0092] Figure 5 It is a configuration diagram of an elevator power saving system according to a second embodiment of the present invention. exist Figure 5 In the overall structure of the elevator and figure 1 The same parts are represented by the same symbols, and only the different parts are described. In this embodiment, a method in which communication and power supply overlap (for example, using power lines for transmission) is adopted. Thus, in Figure 5 will be in figure 1 The elevator lobby and the elevator car power supply part (main power supply for control) 22 and the communication control part 23 separately provided in the elevator hall are combined into a power supply communication part 24. The wiring of the elevator hall call devices 101-10n leading to each floor from the power supply communication part 24 is figure 1 respectively, and ...

no. 3 example

[0096] Refer to the following Figure 7 with Figure 8 A third embodiment of the present invention will be described. exist Figure 7 with Figure 8 In , the same parts are denoted by the same symbols, and their descriptions are omitted.

[0097] Figure 7 It is a configuration diagram of an elevator power saving system according to a third embodiment of the present invention. Figure 8 is a block diagram of an elevator hall call device in the third embodiment of the present invention. Figure 7 with Figure 8 and figure 1 with figure 2 The difference is that in Figure 7 with Figure 8 Among them, the communication with the communication control unit 23, the elevator hall communication devices 131-13n, and the elevator car 7 is performed wirelessly.

[0098] In the third embodiment, the flow when entering the suspend state and the flow when resuming from the suspend state are the same as image 3 with Figure 4 are the same, so the description of these processes...

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PUM

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Abstract

The invention provides an elevator power saving system and a power saving method. During low utilization rate period, elevator lobby display devices (161-16n) and elevator lobby communication devices (131-13n) of elevator lobby calling devices (101-10n) of all stories, except an elevator compartment (7) at the standby story, are in rest mode by turning off the power supply to a power converter and a converter control device in a manner that immediate response is ensured at pressing elevator lobby calling button (151-15n). All elevator lobby display devices and elevator lobby communication devices can be activated at an elevator lobby calling, thereby decreasing standby power consumption of an elevator and saving energy.

Description

technical field [0001] The invention relates to an elevator power-saving system and a power-saving method, in particular to a power-saving system and a power-saving method capable of reducing standby power consumption during an idle period with a low operating rate of an elevator. Background technique [0002] The operating rate of elevators used in apartments is low, and the time in standby mode is long. In order to further save energy for elevators, reducing standby power consumption is an effective method. As a method of reducing standby power consumption, for example, Patent Document 1 or Patent Document 2 discloses a method of cutting off the power supply of drive devices and control devices other than call devices for elevator halls and elevator cars. [0003] In addition, in terms of reducing the power consumption of the elevator hall call button when it is in standby, for example, a solution is disclosed in Patent Document 3, which turns off the lighting when it is i...

Claims

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Application Information

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IPC IPC(8): B66B1/00B66B1/34
CPCY02B50/127Y02B50/00
Inventor 森和久村冈一史深田裕纪
Owner HITACHI LTD
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