Energy-saving control device for permanent magnet variable frequency driven scraper conveyor

Abstract

The invention discloses an energy-saving control device for a permanent magnet variable frequency driven scraper conveyor, and belongs to the field of energy-saving control of heavy machinery devicesfor coal transmission under mining, which is an energy-saving control device for regulating speed at real time in combination with a permanent magnet frequency conversion all-in-one machine accordingto the changed coal flow state and maintains power matched under the tendency of various speeds. The device is composed of a coal flow state detection feedback module, a master / slave drive power matching control module, a permanent magnet frequency conversion all-in-one machine and a scraper conveyer. The biggest advantage is of using various sensors to carry out multi-point acquisition and feedback on the coal flow state information from the motor and the transmission scraper; accordingly, through the control module fusing the current, the rotating speed, and the magnetic flux three-ring vector drive, online coal flow detection in mines and master / slave drive real-time power matching under mining are realized, and the purpose of energy saving and consumption reduction is achieved; and theenergy-saving control device for a permanent magnet variable frequency driven scraper conveyor is suitable for occasions such as energy saving control of heavy coal transmission machinery on the fully mechanized coal mining face under mining.

Description

technical field [0001] The invention belongs to the technical field of coal mine electrical equipment, and in particular relates to an energy-saving control device for a permanent magnet variable frequency drive scraper conveyor. Background technique [0002] At present, most of the driving methods commonly used for scraper conveyors under mines in my country are two-speed motors and CST controllable starting devices. The driving mode of the two-speed motor is usually connected to the chain of the scraper conveyor through the reducer by the two-speed motor. The motor is equipped with two sets of windings, which are low-speed windings and high-speed windings. When the motor is energized and started, the low-speed winding is used, and the scraper conveyor chain speeds up accordingly. When the operation reaches a stable state, it is switched to the high-speed winding and energized. Under the action of inertia, the motor and the scraper conveyor continue to speed up at the curre...

AI Technical Summary

Problems solved by technology

[0005] The present invention is an energy-saving control device for a permanent magnet variable frequency drive scraper conveyor, which aims to solve the problem of unmatched operation of the motor power at the head and tail of the existing scraper conveyor due to continuous and irregular changes in the load of the coal flow when the existing scraper conveyor is working. Disadvantages of large power loss

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