本文選題：礦用電機(jī)車　切入點(diǎn)：異步電機(jī)　出處：《安徽理工大學(xué)》2017年碩士論文

【摘要】：礦用電機(jī)車是煤礦開采工作中主要的運(yùn)輸工具,它的運(yùn)行性能關(guān)系到煤礦生產(chǎn)的效率和經(jīng)濟(jì)效益。傳統(tǒng)的礦用電機(jī)車多采用直流電機(jī)作為驅(qū)動(dòng)電機(jī),但其有耗能嚴(yán)重、串電阻啟動(dòng)、體積大、維護(hù)成本高等缺點(diǎn),為了調(diào)高電機(jī)車的起動(dòng)速度慢和速度調(diào)節(jié)不平穩(wěn)的性能以及改善其耗能嚴(yán)重的問(wèn)題,本文以礦用蓄電池電機(jī)車電機(jī)驅(qū)動(dòng)異步電動(dòng)機(jī)為對(duì)象,運(yùn)用成熟的直接轉(zhuǎn)矩控制技術(shù)和電動(dòng)汽車能量回饋技術(shù)對(duì)礦用電機(jī)車電機(jī)驅(qū)動(dòng)的交流調(diào)速技術(shù)和制動(dòng)能量回饋系統(tǒng)進(jìn)行相應(yīng)地分析與研究。本文在分析電機(jī)車的運(yùn)行特性后,系統(tǒng)地分析了三相交流異步電動(dòng)機(jī)的數(shù)學(xué)模型,同時(shí)對(duì)定子磁鏈影響因素以及電磁轉(zhuǎn)矩的運(yùn)行特性做出了簡(jiǎn)單地分析,以此作為直接轉(zhuǎn)矩控制(DTC)策略選擇的理論依據(jù),在DTC控制策略中,相比六扇區(qū)矢量空間表的控制,采用十二扇區(qū)細(xì)分的DTC交流調(diào)速控制方式性能更優(yōu)化。本論文還詳細(xì)介紹了電機(jī)車電機(jī)驅(qū)動(dòng)的四象限的運(yùn)動(dòng)特性,分析了電機(jī)車電動(dòng)狀態(tài)和發(fā)電狀態(tài)的運(yùn)行特性,同時(shí)還分析了電機(jī)車電機(jī)驅(qū)動(dòng)的能量再生原理以及再生條件。在能量回饋制動(dòng)電路中同時(shí)還應(yīng)用到了超級(jí)電容來(lái)儲(chǔ)存能量,采用恒流閉環(huán)控制,通過(guò)雙向DC/DC變換器實(shí)現(xiàn)能量的回饋與再利用,使得礦用蓄電池電機(jī)車的交流調(diào)速性能更優(yōu)越,電機(jī)車的續(xù)航里程得到較大提升。論文對(duì)改進(jìn)的DTC控制策略和電機(jī)車的制動(dòng)能量回饋控制進(jìn)行了Matlab仿真模型的搭建,驗(yàn)證了十二扇區(qū)細(xì)分的直接轉(zhuǎn)矩控制策略的優(yōu)越性,及電機(jī)車超級(jí)電容能量回饋控制系統(tǒng)可行性,同時(shí)驗(yàn)證了雙向DC/DC變換器對(duì)超級(jí)電容工作時(shí)的恒流控制策略。本文以TMS320F2812 DSP數(shù)字信號(hào)控制芯片作為控制系統(tǒng)的核心處理器,設(shè)計(jì)了系統(tǒng)的硬件和軟件,主電路采用了 IPM智能功率模塊,系統(tǒng)的對(duì)電機(jī)車電機(jī)驅(qū)動(dòng)DTC控制策略和能量回饋系統(tǒng)進(jìn)行實(shí)驗(yàn)驗(yàn)證。
[Abstract]:Mine electric locomotive is the main transportation tool in coal mining, and its operation performance is related to the efficiency and economic benefit of coal mine production.Traditional mine electric locomotives use DC motor as drive motor, but it has some disadvantages, such as serious energy consumption, series resistance starting, large volume, high maintenance cost, etc.In order to improve the performance of slow starting speed and unsteady speed regulation of electric locomotives, and to improve the serious energy consumption of electric locomotives, this paper takes the asynchronous motor driven by the electric motor of mine battery electric locomotive as an object.Using the mature direct torque control technology and the energy feedback technology of electric vehicle, the AC speed regulation technology and braking energy feedback system driven by mine electric locomotive motor are analyzed and studied accordingly.After analyzing the running characteristics of electric locomotive, the mathematical model of three-phase AC asynchronous motor is systematically analyzed, and the influence factors of stator flux linkage and the operating characteristics of electromagnetic torque are analyzed simply.In the DTC control strategy, compared with the six sectors vector space table control, the performance of the DTC AC speed regulation control mode with 12 sectors subdivision is better than that of the six sectors vector space table control strategy.This paper also introduces the motion characteristics of the four quadrants of the electric locomotive motor in detail, analyzes the running characteristics of the electric state and the power generation state of the electric locomotive, and also analyzes the principle of energy regeneration and the regeneration conditions of the electric locomotive motor drive.At the same time, the super capacitor is used to store energy in the energy feedback braking circuit. The constant current closed-loop control is used to realize the energy feedback and reuse through the bi-directional DC/DC converter, which makes the AC speed regulation performance of mine battery locomotive more superior.Electric locomotive mileage has been greatly improved.In this paper, the improved DTC control strategy and the braking energy feedback control of electric locomotive are built by Matlab simulation model, and the superiority of the DTC strategy of the 12 sectors subdivision is verified.And the feasibility of the super capacitor energy feedback control system of electric locomotive. The constant current control strategy of bidirectional DC/DC converter for super capacitor operation is also verified.In this paper, the TMS320F2812 DSP digital signal control chip is used as the core processor of the control system. The hardware and software of the system are designed. The main circuit adopts the IPM intelligent power module.The DTC control strategy and energy feedback system for electric locomotive motor drive are verified by experiments.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD642

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本文編號(hào)：1718333