本文選題：直接轉(zhuǎn)矩控制 + 模糊邏輯控制　； 參考：《太原科技大學(xué)》2014年碩士論文

【摘要】：異步電動(dòng)機(jī)是現(xiàn)代工業(yè)中重要的動(dòng)力裝置之一,其高性能調(diào)速和智能化控制已成為研究熱點(diǎn)。交流電動(dòng)機(jī)的調(diào)速技術(shù),經(jīng)歷了轉(zhuǎn)速開環(huán)恒壓比控制、轉(zhuǎn)差頻率控制、磁場(chǎng)定向控制、直接轉(zhuǎn)矩控制和智能控制等階段。直接轉(zhuǎn)矩控制在20世紀(jì)80年代提出以來,其因控制方式簡(jiǎn)潔直接、轉(zhuǎn)矩響應(yīng)快速等特點(diǎn),提高了異步電機(jī)的動(dòng)、靜態(tài)性能,因而受到人們廣泛關(guān)注。但由于傳統(tǒng)直接轉(zhuǎn)矩控制系統(tǒng)中轉(zhuǎn)矩和磁鏈調(diào)節(jié)器采用滯環(huán)比較器,增大了逆變器開關(guān)頻率,導(dǎo)致系統(tǒng)產(chǎn)生較大轉(zhuǎn)矩脈動(dòng)。在電動(dòng)汽車驅(qū)動(dòng)控制系統(tǒng)中傳統(tǒng)DTC(Direct Torque Control)技術(shù)難以滿足低開關(guān)損耗和良好轉(zhuǎn)矩控制的要求。本文首先從理論基礎(chǔ)出發(fā),介紹了DTC系統(tǒng)基本模塊理論知識(shí),并對(duì)各模塊展開理論分析,介紹各模塊彼此之間的關(guān)系與影響,為后面章節(jié)的建模仿真準(zhǔn)備充足的理論知識(shí)和理論依據(jù)。其次,本文利用Matlab/Simulink仿真軟件模擬仿真電動(dòng)汽車驅(qū)動(dòng)控制系統(tǒng)中直接轉(zhuǎn)矩控制系統(tǒng)的局部各模塊。在此基礎(chǔ)上搭建完整近似圓形磁鏈控制系統(tǒng)的仿真模型,并對(duì)仿真結(jié)果進(jìn)行分析,得到電動(dòng)汽車上應(yīng)用的直接轉(zhuǎn)矩控制技術(shù),電動(dòng)機(jī)轉(zhuǎn)矩脈動(dòng)大的事實(shí)依據(jù)。最后,依據(jù)模糊理論知識(shí)設(shè)計(jì)了模糊PI轉(zhuǎn)矩調(diào)節(jié)器,搭建出基于模糊邏輯控制技術(shù)的直接轉(zhuǎn)矩控制系統(tǒng),對(duì)該系統(tǒng)和傳統(tǒng)直接轉(zhuǎn)矩控制系統(tǒng)相比較,得到轉(zhuǎn)矩脈動(dòng)減少的結(jié)論,驗(yàn)證了模糊邏輯控制的異步電動(dòng)機(jī)直接轉(zhuǎn)矩控制系統(tǒng)的優(yōu)越性。
[Abstract]:Asynchronous motor is one of the most important power devices in modern industry. Its high performance speed regulation and intelligent control have become a research hotspot. The speed regulation technology of AC motor has gone through the stages of speed open loop constant voltage ratio control, slip frequency control, magnetic field oriented control, direct torque control and intelligent control. Since the direct torque control (DTC) was put forward in the 1980s, it has been paid more attention to because of its simple and direct control mode and fast torque response, which improves the dynamic and static performance of asynchronous motor. However, the hysteresis comparator is used in the traditional direct torque control system, which increases the switching frequency of the inverter and results in a large torque ripple. In the drive control system of electric vehicles, the traditional DTC Direct torque Control (DTC) technology is difficult to meet the requirements of low switching loss and good torque control. In this paper, the theoretical knowledge of the basic modules of DTC system is introduced based on the theoretical basis, and the theoretical analysis of each module is carried out, and the relationship and influence of each module is introduced. Sufficient theoretical knowledge and theoretical basis for the modeling and simulation of the following chapters are prepared. Secondly, this paper uses Matlab / Simulink simulation software to simulate the local modules of direct torque control system in electric vehicle drive control system. On this basis, the simulation model of the approximate circular flux control system is built, and the simulation results are analyzed. The direct torque control technology applied in electric vehicles and the fact basis of the large torque ripple of the motor are obtained. Finally, the fuzzy Pi torque regulator is designed according to the fuzzy theory knowledge, and the direct torque control system based on fuzzy logic control technology is built. Compared with the traditional direct torque control system, the conclusion of torque ripple reduction is obtained. The superiority of direct torque control system of asynchronous motor based on fuzzy logic control is verified.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM343

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 楊向宇;朱衛(wèi)華;姚佳;;永磁同步電機(jī)模糊直接轉(zhuǎn)矩控制仿真[J];華南理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年04期

2 耿東昱;鄒俊忠;張見;陳蘭嵐;彭Pr;;基于矩陣變換器的異步電機(jī)直接轉(zhuǎn)矩模糊控制[J];電機(jī)與控制應(yīng)用;2013年06期

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本文編號(hào)：2034448