Energy-saving variable-frequency speed control system for hoists

A frequency conversion speed regulation and control system technology, applied in elevators, transportation and packaging, etc., can solve the problems of complex control circuits and high damage rates, and achieve the effects of reducing slip, improving power factor, and powerful compatible functions

Inactive Publication Date: 2012-08-29
SHANGHAI SHENBANG ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an energy-saving variable frequency speed regulation control system for hoists. High efficiency and other disadvantages, and has a very obvious energy-saving effect, has a very good application and promotion value

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  • Energy-saving variable-frequency speed control system for hoists
  • Energy-saving variable-frequency speed control system for hoists

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Embodiment Construction

[0012] Such as figure 1 The hoist energy-saving frequency conversion speed regulation control system shown in the hoist mainly includes:

[0013] The frequency converter mainly realizes frequency conversion and speed regulation for the lifting of the hoist; the stroke control system mainly performs precise stroke control on the speed change, parking and braking of the hoist; the operation control system mainly completes the hoisting, starting and lowering of the hoist. Operation control such as start-up, fault reset and emergency braking; energy consumption braking and brake control system, mainly to realize the stop control of the hoist.

[0014] Wherein, the frequency converter mainly includes the following three kinds of frequency conversion speed regulation: constant acceleration frequency conversion speed regulation start, constant deceleration frequency conversion speed regulation stop and stroke frequency conversion speed regulation operation.

[0015] Among them, the ...

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Abstract

The invention relates to an energy-saving variable-frequency speed control system for hoists. The system mainly comprises an inverter, a travel control system, an operation control system and an energy-consuming braking and brake control system; the inverter mainly is used for performing variable-frequency speed control and the like on the lifting of the hoist; the travel control system mainly is used for performing accurate travel control on the speed change, stopping, braking and the like of the hoist; the operation control system mainly controls the hoisting starting, dropping starting, fault resetting, emergent braking and other operations of the hoist; and the energy-consuming braking and brake control system mainly controls the stopping of the hoist. Since the inverter is applied into the hoist system, the requirements on the constant-acceleration and constant-deceleration stepless speed control of the hoist can be effectively met, and therefore soft start and smooth speed control can be truly realized by the motor. Meanwhile, the problems of speed control, starting and the like are effectively solved, the defects of a rotor-resistance speed control system, such as complex control circuit and high damage rate, are overcome, and moreover, the energy-saving variable-frequency speed control system has a remarkable energy-saving effect, and is highly worth applying and popularizing.

Description

technical field [0001] The invention relates to the field of frequency conversion speed regulation control, in particular to an energy-saving frequency conversion speed regulation control system for a hoist. Background technique [0002] At present, mine hoists generally use AC wound motor rotor series resistance speed control system. The speed control performance of the hoist in the deceleration and crawling stages is poor, especially when the load changes, it is difficult to achieve constant deceleration control, which often causes over-discharge and over-winding accidents; Resistive speed regulation produces quite serious energy consumption; the rotor series resistance speed regulation control circuit is complex, contactors, resistors, winding motor brushes, etc. are easily damaged, which affects production efficiency. [0003] The speed control of the frequency converter can realize the constant acceleration and constant deceleration control of the hoist, which can well...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/28
Inventor 伍远波马利江
Owner SHANGHAI SHENBANG ELECTRONICS TECH
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