本文選題：變頻調(diào)速　切入點：礦井提升機　出處：《內(nèi)蒙古大學》2015年碩士論文　論文類型：學位論文

【摘要】：礦井提升機,作為煤礦生產(chǎn)系統(tǒng)中用來聯(lián)系井上井下的樞紐運輸設備,素有煤礦“咽喉”之稱,其運行性能和可靠性直接關系到煤礦生產(chǎn)能力以及作業(yè)人員的生命安全。然而,當前我國大多數(shù)礦用提升機依舊通過采用繞線式異步電機轉(zhuǎn)子回路串電阻的方式來實現(xiàn)其調(diào)速要求,這種傳統(tǒng)的控制方式,雖具備操作簡單,初期投資較小等優(yōu)點,但是由于存在電氣及機械沖擊、能耗較大、控制精度較低并且調(diào)速效果不夠理想,其弊端正日益顯現(xiàn)。本課題以徐礦集團夾河煤礦的副井提升機系統(tǒng)為研究背景,利用西門子自動化軟件STEP 7組態(tài)硬件,編制梯形圖,實現(xiàn)所設計S型速度曲線控制邏輯,并利用PLCSIM軟件進行程序調(diào)試及系統(tǒng)仿真,觀測輸入輸出繼電器、中間繼電器以及定時器等的狀態(tài)變化是否符合設計預期。對變頻調(diào)速系統(tǒng)的監(jiān)控組態(tài)設計是通過組態(tài)軟件Wincc來實現(xiàn),通過功能完善且友好的人機界面,實時獲取系統(tǒng)工況參數(shù)。本設計采用S7-300 PLC作為邏輯控制器,選用西門子MM420變頻器,配合三相繞線式異步電機,構建變頻調(diào)速開環(huán)控制系統(tǒng),組態(tài)硬件并下載程序至PLC,變量表監(jiān)視運行,并進行變頻器快速調(diào)試以及參數(shù)設置,以及系統(tǒng)調(diào)試,于提升周期的五個運行階段內(nèi),使電機轉(zhuǎn)速輸出符合S型速度變化規(guī)律,系統(tǒng)測試運行效果符合所預期五階段式S型速度變化規(guī)律,控制效果符合設計要求。
[Abstract]:The mine hoist, which is used in the coal mine production system to connect the hub transportation equipment on the well, is known as the "throat" of the coal mine. Its operation performance and reliability are directly related to the production capacity of the coal mine and the life safety of the workers. At present, most mine hoists in our country still adopt the method of winding type asynchronous motor rotor circuit series resistance to realize its speed regulation requirements. Although this traditional control mode has the advantages of simple operation and small initial investment, etc. However, due to the existence of electrical and mechanical shocks, high energy consumption, low control precision and insufficient speed regulation, the disadvantages of the system are becoming increasingly apparent. The research background of this subject is the auxiliary shaft hoist system of Jiahe Coal Mine. By using Siemens automatic software STEP 7 configuration hardware, trapezoidal diagram is compiled to realize the control logic of S-type velocity curve. The software PLCSIM is used to debug and simulate the system and observe the input and output relays. Whether the state changes of intermediate relays and timers meet the design expectations. The configuration design of frequency conversion speed control system is realized by configuration software Wincc, and the function is perfect and friendly man-machine interface. In this design, S7-300 PLC is used as logic controller, Siemens MM420 inverter is selected, and three-phase winding asynchronous motor is used to construct the open loop control system of frequency conversion speed regulation. Configuration hardware and download program to PLC, variable table monitor running, and carry on the frequency converter fast debugging, parameter setting, and system debugging, in the five operation stages of the lifting cycle, the motor speed output conforms to the S-type speed change rule. The system test results accord with the expected five-stage S-type speed changes and the control results meet the design requirements.
【學位授予單位】：內(nèi)蒙古大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD633;TP273

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本文編號：1583472