Elevator auxiliary torque device, elevator and control method for elevator

A technology of assisting torque and assisting the motor, which is applied in the control of the speed or torque of the motor, the control system, the elevator in the building, etc., which can solve the problem of inability to effectively deal with the accidental slipping of the car and the inability to effectively brake the car and other problems to achieve the effect of avoiding accidental slipping and impact

Active Publication Date: 2013-09-18
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] d) The car cannot be effectively braked when the rope breaks;
[0008] e) Unable to effectively deal with the accidental slipping of the car caused by the decrease of the braking force caused by the decrease of the friction coefficient between the traction sheave and the rope

Method used

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  • Elevator auxiliary torque device, elevator and control method for elevator
  • Elevator auxiliary torque device, elevator and control method for elevator
  • Elevator auxiliary torque device, elevator and control method for elevator

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Effect test

Embodiment 1

[0038] see figure 1 The structure schematic diagram of the elevator auxiliary torque device of the present invention is shown, the elevator auxiliary torque device of the present invention includes: an auxiliary motor for generating auxiliary torque, for storing the electric energy generated by the auxiliary motor and An energy storage device for supplying stored electrical energy to the auxiliary motor when the motor is running electrically, a power converter for converting the electrical energy generated by the auxiliary motor, and an auxiliary torque control for controlling the power converter and an auxiliary torque transfer device for transferring the auxiliary torque generated by the auxiliary motor to the elevator. The auxiliary motor is an induction motor or a permanent magnet synchronous gearless traction machine; the energy storage device can be one or more combinations of batteries, supercapacitors and nanocapacitors, and the charging state of the energy storage dev...

Embodiment 2

[0044] see figure 2 The structure schematic diagram of the elevator auxiliary torque device of the present invention is shown. This embodiment is similar to the first embodiment, and only the difference between it and the first embodiment will be described below. The power converter is a three-phase auxiliary inverter composed of power switches such as IGBT and MOSFET. The auxiliary torque controller first calculates the current difference between the auxiliary motor torque command (actually a torque current command) and the detected current of the auxiliary motor, and then sends the current difference to a current controller, Finally, the current controller outputs a control signal to control the auxiliary inverter according to the input current difference, so that the auxiliary torque generated by the auxiliary motor tracks the torque command of the auxiliary motor. The auxiliary torque controller monitors the charging state of the energy storage device in real time when ...

Embodiment 3

[0046] see image 3 The structure schematic diagram of the elevator auxiliary torque device of the present invention is shown. This embodiment is similar to the first embodiment, and only the difference between it and the first embodiment will be described below. The elevator auxiliary torque device shown in this embodiment adds an energy consumption circuit and an energy consumption controller on the basis of the first embodiment. The energy consumption circuit is composed of a energy consumption resistor and a switch circuit connected in parallel to both ends of the DC side of the auxiliary inverter. The energy consumption controller controls the switch circuit according to the DC side voltage of the auxiliary inverter, and closes the switch circuit when the DC side voltage of the auxiliary inverter exceeds a predetermined value, so as to realize energy saving. The power consumption of the resistor.

[0047] When the state of charge of the energy storage device reaches it...

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Abstract

The invention discloses an elevator auxiliary torque device, which comprises an auxiliary motor, an energy storage device, a power converter, an auxiliary torque controller and an auxiliary torque transmitting device, wherein the auxiliary torque controller controls the power converter according to an auxiliary torque command, an energy storage state of the energy storage device and the detection current of the auxiliary motor, so that the auxiliary torque generated by the auxiliary motor tracks the auxiliary torque command on the premise that the energy storage state of the energy storage device is kept in a certain range. The invention also discloses an elevator employing the elevator auxiliary torque device and a control method for the elevator. The elevator auxiliary torque device and the elevator employing the elevator auxiliary torque device can provide large driving torque, realize energy conservation of the elevator by using regenerated energy, effectively reduce the power of the elevator and the electric capacity of a corresponding electric circuit, have low requirements on a traction friction coefficient, and can effectively brake a cage and deal with the accidental slide of the cage when a rope is ruptured and the like.

Description

technical field [0001] The invention relates to an elevator auxiliary torque device, in particular to a device which utilizes an auxiliary motor to provide auxiliary torque for an elevator; the invention also relates to an elevator using the elevator auxiliary torque device and a control method thereof. Background technique [0002] At present, in most elevators, the drive system used as the power source for the car to go up and down in the hoistway usually only includes one drive motor. However, in some specific cases, in order to achieve goals such as large drive torque and energy saving, two or more torque generating devices will also be included in the elevator drive system, such as: Chinese Invention Patent Application Publication Specification CN1289376C (Application No. : 03129484.7, date of authorization: December 13, 2006) In order to solve the problem of large drive torque required by large-load, medium-to-high-speed elevators, a scheme for driving elevators using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B11/04H02P5/00
CPCY02B50/00
Inventor 陈玉东
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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