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Rescue operation device of elevator

A technology for operating devices and elevators, which is applied in transportation and packaging, electrical components, AC motor control, etc., and can solve the problem of fast battery consumption

Active Publication Date: 2014-12-24
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a problem has been found that a huge reactive current that does not become torque flows from the battery to the motor, and the battery is consumed quickly.

Method used

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  • Rescue operation device of elevator
  • Rescue operation device of elevator
  • Rescue operation device of elevator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] according to figure 1 and figure 2 One embodiment of the present invention will be described. figure 1 is an overall view showing an elevator rescue operation device according to an embodiment of the present invention, figure 2 It is a diagram showing the polarity (a) of the voltage applied to the three-phase winding of the motor and the excitation phase (b) of the winding.

[0036] exist figure 1 Among them, in the elevator, the three-phase AC power supply 3 is connected to the permanent magnet synchronous motor 11 via the main switch 5, the inverter 7, and the power switch 9. Pulley 13, and the brake 24 that releases and restrains sheave 13, and has the car 17 that is fixed at one end of the rope 15 that hangs around sheave 13, and the counterweight 19 that is fixed at the other end of rope 15.

[0037] And, the current of the brake coil 24L is turned on and off from the battery 20 having one pole (positive pole) and the other pole (negative pole) via the brake ...

Embodiment approach 2

[0069] use Figure 4 and Figure 5 Other embodiments of the present invention will be described. Figure 4 is an overall view showing an elevator rescue operation device according to another embodiment of the present invention, Figure 5 is to show Figure 4 Diagram of the polarity (a) of the voltage applied to the three-phase windings of the motor shown, and the excitation phases of the motor windings (b). exist Figure 4 in, with figure 1 The same reference numerals denote the same parts, and descriptions thereof are omitted.

[0070] exist Figure 4Among them, the rescue operation device of the elevator has a second excitation switch group 150 to replace figure 1 The shown first excitation switch group 52 and the second excitation switch group 150 have a third excitation switch 152 and a fourth excitation switch 154 , and the fourth excitation switch 154 operates independently of the third excitation switch 152 .

[0071] The a terminal of the third excitation switc...

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PUM

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Abstract

It includes a brake switch (22) that connects and opens a direct current power (20) with a brake coil (24L), an exciting circuit (50) generating a torque by connecting the direct current power (20) to a three-phase winding of a motor (11) and making the current flow into the motor (11), and a rescue switch (32) that connects and opens the exciting circuit (50) with the direct current power (20). The exciting circuit (50) includes a first excitation pattern in which one electrode of the direct current power (20) is connected to one phase of the three-phase winding, and the other electrode of the direct current power (20) is connected to the other two phases of the three-phase winding, a second excitation pattern in which the phase formed by the three-phase winding of the motor (11) is set forward by an electrical angle of 90 degrees in a direction in which a car (17) is to be moved, and an off pattern in which windings of two phases are set apart from the direct current power (20).

Description

technical field [0001] The invention relates to a rescue operation device of an elevator. Background technique [0002] As a conventional elevator rescue operation device, a rescue operation device using a dynamic brake is known as shown in Patent Document 1 below. [0003] In this rescue operation device, the elevator control device is driven by an inverter that detects an input current of a synchronous motor excited by a permanent magnet and converts the detected current into a magnetic flux equivalent to that of the permanent magnet. The components of the phase and the components orthogonal to the components of the same phase are used for control. The elevator control device is equipped with: a power supply abnormality detection unit for detecting power supply abnormalities; The rescue floor of the car stopped due to abnormality; the short-circuit unit, which short-circuits the input terminal of the synchronous motor when the power supply abnormality detection unit detec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/06
CPCH02P27/06B66B5/027B66B5/06
Inventor 安江正德
Owner MITSUBISHI ELECTRIC CORP