Elevator operation control method and elevator system
A control system and elevator operation technology, applied in transportation and packaging, elevators, hoisting devices, etc., can solve the problems of frequent accidents and large deceleration, and achieve the effect of avoiding instantaneous braking and improving safety.
Inactive Publication Date: 2012-06-13
HITACHI ELEVATOR CHINA
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Problems solved by technology
[0003] In the case of a power failure, due to the lack of power input at the power input terminal, the elevator brake will immediately stop the car due to lack of power, and the brake force will directly stop the car, and its deceleration is extremely large. For example, a rated When the elevator with a speed of 150m / min is running at the rated speed, a power failure occurs. When the brake is released, the speed of the car will change from 150m / min to 0 within 1 second, and the deceleration will be 2.5m / s2. It is said that there is a certain risk, which leads to frequent accidents
Method used
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Embodiment Construction
[0027] Embodiments of the present invention will be described in detail below.
[0028] Such as figure 1 Shown, a kind of elevator system, this elevator operation control system comprises:
[0029] a. The power input terminal 1 supplies power to the brake control system 5 and the rectification and inverter system 3;
[0030] b. The control unit 2 receives the "power on" and "power off" signals from the power input terminal 1. If the input of the power input terminal 1 is the "power on" signal, it controls the rectification and inverter system 3 and the variable frequency drive system 4 to work , in the present embodiment, control unit 2 is DSP (digital signal processing chip);
[0031] c. The rectification and inverter system 3, when the power supply is normal and the traction machine 7 is in the electric working condition, the power supply of the power input terminal 1 becomes DC after passing through the rectification and inverter system 3, and stores energy in the energy ...
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The invention discloses an elevator operation control method and an elevator system. The method comprises the following steps that: A, an elevator is started, an electrified signal is acquired by a control unit, and the control unit controls a rectifying inversion system and a frequency conversion driving system to work; B, an input power supply stores energy to an energy storage component through the rectifying inversion system and supplies power to a tractor through the frequency conversion driving system, the tractor drives a cage to operate, the input power supply supplies power to an elevator brake through a brake control system, and the elevator brake is opened; C, power fails at a power supply input end, a power failure signal is acquired by the control unit, and the control unit controls the rectifying inversion system to work and controls the frequency conversion driving system to stop working; and D, electric energy stored by an energy storage unit is supplied to the elevator brake through the rectifying inversion system and the brake control system, and the elevator brake is slowly braked along gradual consumption of the electric energy of the energy storage component. By the method, the soft stop of the elevator can be realized, and the safety in the process of operating the elevator is improved.
Description
technical field [0001] The invention relates to an elevator operation control method and an elevator system. Background technique [0002] During the normal operation of the existing elevator system, the external power is input through the power input terminal, and the AC power is converted into DC power through the rectification and inverter system, and then the DC power is converted into AC power through the frequency conversion drive system and output to the traction machine. The motor drives the car to run. At this time, the DC power output by the rectification and inverter system simultaneously stores energy in the energy storage element, and the power input from the power input terminal supplies power to the elevator brake through the brake control system at the same time, and the elevator brake is released. . In the prior art, the rectification and inverter system is used to convert alternating current into direct current. In order to improve the rectification effect...
Claims
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IPC IPC(8): B66B1/06B66D5/30
Inventor 张文俊郭志海杜永聪
Owner HITACHI ELEVATOR CHINA