Converter tilting frequency conversion timing control system

A control system, frequency conversion speed regulation technology, applied in the direction of comprehensive factory control, electrical program control, comprehensive factory control, etc., can solve the problems of poor torque balance, slow dynamic response, etc., to achieve smooth start and stop, energy saving effect

Inactive Publication Date: 2013-04-24
鞍钢集团自动化有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control of the converter tilting device often adopts the control mode of torque or speed, which has the disadvantages of poor torque balance and slow dynamic response.

Method used

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  • Converter tilting frequency conversion timing control system
  • Converter tilting frequency conversion timing control system

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Embodiment Construction

[0011] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] Converter tilting frequency conversion speed regulation control system, including four frequency converters, a tilting motor controlled by each frequency converter, and a converter PLC control system. Between the four frequency converters, a ring structure network is formed through an optical cable serial communication link , in the ring structure network, the converter PLC control system determines one master and three slave machines for the four frequency converters in the ring structure network, the converter tilting operation signal sent by the converter PLC control system is only connected to the master, and then the master passes through Optical cable serial communication link to control the three slave machines; each frequency converter and the converter PLC control system realize the communication of speed setting, torque setting...

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Abstract

The invention relates to a converter tilting frequency conversion timing control system which comprises four inverters, a tilting motor and a converter PLC (Programmable Logic Controller)control system which are respectively controlled by the inverters, wherein a ring structure network is formed by an optic cable serial communication link among four inverters, and in the ring structure network, a host and three slave machines are determined for the four inverters in the ring structure network by the converter PLC control system; communications of a speed reference, a torque reference, a control word and a status word between each inverter and the converter PLC control system are realized by a Profibus-DP(Decentralized Periphery) network; and the system consists of a speed control loop and a torque control loop. Compared with the prior art, the system has the following beneficial effects: the operation speeds and torque values of motors which are respectively controlled by the four inverters are ensured to be basically consistent, so that loads can be evenly distributed among four drive motors, and the converter is smooth and stable to operate, start and stop and is energy-saving.

Description

technical field [0001] The invention relates to an electric transmission control system for a tilting device of a steelmaking process converter in the metallurgical industry. Background technique [0002] The converter tilting device usually adopts a fully suspended four-point transmission method, which has the advantages of compact equipment layout, small footprint, and low installation difficulty. In the actual production operation process, the converter tilting device needs to be frequently started, braked, accelerated and decelerated, so there are high requirements for the control accuracy of the tilting device and the response time of the system. According to the control process requirements of the converter, the tilting angle of the converter is 360° positive and negative. When the axis of the furnace mouth and the bottom of the converter is perpendicular to the ground plane, it is in a vertical state. Therefore, the tilting load moment of the converter is a function o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/50G05B19/418
CPCY02P90/02
Inventor 田宏文
Owner 鞍钢集团自动化有限公司
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