本文選題：大型異步電動(dòng)機(jī)　切入點(diǎn)：軟啟動(dòng)　出處：《南京理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：交流異步電動(dòng)機(jī)結(jié)構(gòu)緊湊簡(jiǎn)單、運(yùn)轉(zhuǎn)高效可靠、維保經(jīng)濟(jì)方便,因而在電力拖動(dòng)系統(tǒng)中得到了廣泛的應(yīng)用。作為工業(yè)生產(chǎn)中最為重要的驅(qū)動(dòng)執(zhí)行裝置,其控制方式一向受到高度的重視。傳統(tǒng)的啟動(dòng)方式,如：定子串電阻啟動(dòng)、Y-△啟動(dòng)、磁控式降壓?jiǎn)?dòng)、自耦變壓器啟動(dòng)等,存在啟動(dòng)電流與機(jī)械轉(zhuǎn)矩沖擊過大、綜合性能與實(shí)用性不佳的問題。針對(duì)以上問題,論文設(shè)計(jì)并實(shí)現(xiàn)了大型異步電動(dòng)機(jī)智能軟啟動(dòng)裝置,主要內(nèi)容如下： 首先,論文介紹了電機(jī)軟啟動(dòng)的原理,并對(duì)軟啟動(dòng)裝置的控制核心和晶閘管進(jìn)行選型；對(duì)軟啟動(dòng)主電路拓?fù)�、上位機(jī)系統(tǒng)和軟啟動(dòng)系統(tǒng)總體結(jié)構(gòu)進(jìn)行了選擇和設(shè)計(jì)。 其次,選定軟啟動(dòng)控制算法：在Matlab軟件環(huán)境下,通過仿真獲得軟啟動(dòng)神經(jīng)網(wǎng)絡(luò)控制算法訓(xùn)練樣本,并以同樣的訓(xùn)練樣本分別對(duì)BP與RBF神經(jīng)網(wǎng)絡(luò)算法進(jìn)行訓(xùn)練,通過仿真結(jié)果選定啟動(dòng)算法。 再次,對(duì)軟啟動(dòng)裝置電路進(jìn)行設(shè)計(jì)：分別對(duì)晶閘管調(diào)壓與觸發(fā)環(huán)節(jié)電路、電壓同步檢測(cè)環(huán)節(jié)電路、電壓與電流檢測(cè)環(huán)節(jié)電路、電機(jī)轉(zhuǎn)速測(cè)量環(huán)節(jié)電路進(jìn)行設(shè)計(jì)和仿真,并對(duì)軟啟動(dòng)裝置進(jìn)行總體仿真。 然后,對(duì)DSP控制模塊進(jìn)行設(shè)計(jì)與制作：分別對(duì)DSP控制模塊核心板、底板PCB進(jìn)行設(shè)計(jì),采用Ansoft Designer軟件對(duì)核心板PCB手工布線前后的電磁兼容性能進(jìn)行仿真分析,并完成底板PCB的硬件制作。 最后,對(duì)上位機(jī)界面進(jìn)行設(shè)計(jì)：應(yīng)用LabVIEW軟件對(duì)登陸界面、目錄與串口設(shè)置界面、工作狀態(tài)與軟啟動(dòng)控制界面、歷史數(shù)據(jù)查詢與波形讀取界面等共七個(gè)界面進(jìn)行設(shè)計(jì)。 綜上所述：通過以上幾個(gè)部分的設(shè)計(jì),完成大型異步電動(dòng)機(jī)智能軟啟動(dòng)裝置的設(shè)計(jì)與實(shí)現(xiàn),為大型異步電動(dòng)機(jī)的啟動(dòng)控制提供了參考。
[Abstract]:The AC asynchronous motor has been widely used in electric drive system because of its compact structure, high efficiency and reliability, convenient maintenance and economical maintenance, which is the most important driving and executing device in industrial production. The traditional startup methods, such as stator series resistance startup, magnetically controlled step-down startup, autotransformer startup, etc., have high starting current and mechanical torque impact. Aiming at the above problems, the paper designs and implements the intelligent soft start device of large asynchronous motor, the main contents are as follows:. Firstly, the paper introduces the principle of soft start of motor, and selects the control core and thyristor of soft start device, and selects and designs the topology of main circuit of soft start, the overall structure of upper computer system and soft start system. Secondly, the soft start control algorithm is selected: under the Matlab software environment, the training sample of soft start neural network control algorithm is obtained by simulation, and the BP and RBF neural network algorithms are trained with the same training sample. The startup algorithm is selected by simulation results. Thirdly, the circuit of soft start device is designed: the circuit of thyristor voltage regulation and trigger, the circuit of voltage synchronous detection, the circuit of voltage and current detection, the circuit of measuring motor speed are designed and simulated, respectively. And the soft start device is simulated as a whole. Then, the DSP control module is designed and fabricated: the core board and the bottom board PCB of the DSP control module are designed, and the EMC performance of the core board PCB before and after the manual wiring is simulated and analyzed by Ansoft Designer software. And complete the bottom PCB hardware production. Finally, the upper computer interface is designed: LabVIEW software is used to design seven interfaces, such as landing interface, directory and serial port setting interface, working state and soft start control interface, historical data query and waveform reading interface. To sum up: through the design of the above several parts, the design and implementation of intelligent soft start device for large asynchronous motor are completed, which provides a reference for the starting control of large asynchronous motor.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM343

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本文編號(hào)：1650339