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Elevator control device

A technology for elevator control devices and controllers, which is applied in the direction of AC motor control, control systems, electrical components, etc., can solve problems such as noise, difficulties in rescue work, and inability to run elevators, and achieve the elimination of positional deviations, elimination of accumulated deviations, and convenience The effect of the rescue

Inactive Publication Date: 2006-12-13
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Problems solved by technology

[0002] At present, the elevator system uses a single traction motor to drive the elevator car to run. This control method has the following disadvantages in medium and high-speed elevators: (1) a traction motor with large capacity and high torque output is required; (2) the inverter (3) When the traction ratio is 2:1, the anti-sheave of the car will cause noise due to high-speed operation; (4) In the event of a major accident, the elevator cannot run, and it is difficult to carry out rescue work

Method used

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Embodiment Construction

[0007] 1 and 2 shown in Figure 1 are traction motors, 3 and 4 are traction wheels, 5 is the car anti-rope pulley, 6 is the elevator car, 7 and 8 are counterweights, and 9 and 10 are inverters 11, 12 are encoders, 13, 14, 15, 16 are current transformers that detect the current of the traction motor, and 17 is a controller, which is the core component of the present invention and is composed of one or more microprocessors. According to the requirements of elevator running distance and counterweight position deviation correction, two different speed graphic instructions of traction motors 1 and 2 are generated, the signals of encoders 11 and 12 are detected, the currents of traction motors 1 and 2 are measured, and the traction is reasonably distributed. The torque commands of motors 1 and 2 are based on vector frequency conversion and voltage conversion control calculations, and two independent PWM pulse signals are output to trigger inverters 9 and 10 to control the torque outpu...

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Abstract

An elevator controller is composed of two towing motors, two counterweights, two inverters, encoder, current transformer, and controller which consists of one or more microprocessors to control two inverters and two towing motors for smooth running of elevator. Its advantages are use of low-power motor and low-capacity power module, and no or very-low-speed rotation of the rope wheel of the cage.

Description

technical field [0001] The invention relates to an elevator control device. Background technique [0002] At present, the elevator system uses a single traction motor to drive the elevator car to run. This control method has the following disadvantages in medium and high-speed elevators: (1) a traction motor with large capacity and high torque output is required; (2) the inverter (3) When the traction ratio is 2:1, the anti-sheave of the car will cause noise due to high-speed operation; (4) When a major accident occurs, the elevator cannot run, and rescue work is difficult. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an elevator control device, which can reduce the capacity of the single traction motor and use a small-capacity power module. It rotates at a very low speed, which is very convenient for rescue work. [0004] In order to solve the above technical problems, the elevator control device of the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B1/30B66B5/02H02P27/04B66B1/00
Inventor 刘玉兵朱武标
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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