電動(dòng)叉車控制系統(tǒng)的研究與設(shè)計(jì)
[Abstract]:With the development of power electronic technology and microprocessor, electric forklift has more and more high research value and broad application prospect. The design core of electric forklift is forklift control system. Therefore, the study of forklift control system has a very realistic economic and social benefits. The main purpose of this paper is to design and implement a set of electric forklift control system which can be used in design and application. The main content of the design includes main circuit, drive circuit and control circuit. The direct torque control strategy is applied to the control of asynchronous motor. In the design of the main circuit, the key technical difficulty lies in the characteristics of low voltage and high current of the motor. Because the electric forklift car uses the asynchronous motor with low voltage and high current, This requires that the power MOSFET used has a very large current capacity and the volume can not be too large, so we have to adopt the parallel mode of multiple tubes, so the problem of current sharing in parallel connection becomes a problem that must be solved. In this design, the current sharing problem of MOSFET is compared and the overall simulation experiments are carried out, and the factors that affect the parallel current sharing are determined, and how to select the reasonable parameters to produce a good current sharing effect is also given. The design of driving circuit is mainly based on IR2214 driver chip. The key technology of the chip is introduced in detail. In the drive of MOSFET, one driver chip drives the upper and lower legs, and the three lower legs can share a power supply. The upper arm adopts the advanced bootstrap method, which greatly reduces the use of power supply and saves cost and volume. The control circuit is built mainly based on DSP28335, and the direct torque control strategy is applied to low voltage and high current motor through simulation experiment. Finally, the problems of no-load low frequency oscillation of induction motor are simulated, and the causes, influencing factors and solutions of the low frequency oscillation are found out.
【學(xué)位授予單位】:東北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2011
【分類號】:TH242;TP273
【參考文獻(xiàn)】
相關(guān)期刊論文 前8條
1 孫奎;吳鳳江;王要強(qiáng);孫力;;感應(yīng)電機(jī)矢量控制與直接轉(zhuǎn)矩控制系統(tǒng)的低速性能對比[J];變頻器世界;2009年10期
2 周慶紅;王華民;劉慶豐;孫金秋;;功率MOSFET并聯(lián)均流問題研究[J];電源技術(shù)應(yīng)用;2005年01期
3 雷曉衛(wèi);;我國叉車工業(yè)的現(xiàn)狀及發(fā)展趨勢——國內(nèi)外叉車性能已無明顯差異 “入世”后國產(chǎn)叉車質(zhì)量將有一個(gè)飛躍 今后幾年將會(huì)有更多的叉車企業(yè)破產(chǎn)、轉(zhuǎn)產(chǎn)[J];叉車技術(shù);2000年03期
4 F.伯萊斯切克;;應(yīng)用于旋轉(zhuǎn)磁場電機(jī)新型矢量變換閉環(huán)控制系統(tǒng)的磁場定向原理[J];電力電子;2004年02期
5 張良;黃子平;劉承俊;章林文;;MOSFET器件并聯(lián)實(shí)驗(yàn)研究[J];通信電源技術(shù);2007年06期
6 李江紅,田濤;Matlab和Visual C++接口中編譯環(huán)境的配置[J];微型機(jī)與應(yīng)用;2000年04期
7 余向陽,余娟,鄭湘渝;B型緩沖電路用于MOSFET逆變器的仿真分析[J];現(xiàn)代電子技術(shù);2005年12期
8 劉松齡,熊承義;逆變器緩沖電路的設(shè)計(jì)與元件參數(shù)計(jì)算[J];中南民族學(xué)院學(xué)報(bào)(自然科學(xué)版);2000年01期
相關(guān)碩士學(xué)位論文 前5條
1 李佳鈺;異步電機(jī)直接轉(zhuǎn)矩控制技術(shù)的理論研究[D];大連理工大學(xué);2004年
2 別紅波;異步電機(jī)直接轉(zhuǎn)矩控制研究與系統(tǒng)開發(fā)[D];大連理工大學(xué);2005年
3 吳貽志;異步電動(dòng)機(jī)傳動(dòng)系統(tǒng)低頻振蕩的分析和控制[D];合肥工業(yè)大學(xué);2006年
4 張俊喜;異步電動(dòng)機(jī)直接轉(zhuǎn)矩控制系統(tǒng)研究[D];哈爾濱理工大學(xué);2007年
5 趙剛;空間電壓矢量的異步電機(jī)直接轉(zhuǎn)矩控制的研究[D];江蘇大學(xué);2009年
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