本文選題：無刷雙饋電機(jī)　切入點(diǎn)：獨(dú)立發(fā)電系統(tǒng)　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：能源短缺和環(huán)境污染等問題的日益凸顯,已經(jīng)成為制約全球經(jīng)濟(jì)發(fā)展的首要問題。在對風(fēng)電等可再生能源的開發(fā)利用中,關(guān)鍵是要研究出性能達(dá)標(biāo)的發(fā)電技術(shù)。變速恒頻發(fā)電技術(shù)(VSG)是發(fā)電技術(shù)領(lǐng)域的一大熱點(diǎn),其中,無刷雙饋電機(jī)(BDFM)用于VSG系統(tǒng)中成為了一個(gè)新的研究方向。該電機(jī)省去電刷和滑環(huán)結(jié)構(gòu),可靠性得到很大改善,且降低了電機(jī)的維護(hù)費(fèi)用,更重要的是可以用相對低電壓、小功率的變流器來實(shí)現(xiàn)對電機(jī)的控制�；诖�,本文的研究內(nèi)容主要是針對繞線轉(zhuǎn)子無刷雙饋電機(jī)獨(dú)立發(fā)電系統(tǒng)的作了相關(guān)研究。首先,對BDFM的定子和轉(zhuǎn)子結(jié)構(gòu)進(jìn)行說明,對它運(yùn)行于發(fā)電狀態(tài)進(jìn)行了分析。分別推導(dǎo)了BDFM在三相靜止abc坐標(biāo)系下和轉(zhuǎn)子速d?q坐標(biāo)系下的數(shù)學(xué)模型。本文以轉(zhuǎn)子速d?q為基礎(chǔ),在Matlab/Simulink仿真環(huán)境中對BDFM的發(fā)電工況進(jìn)行了建模與仿真。其次,分析了無刷雙饋電機(jī)內(nèi)部的能量流動(dòng)關(guān)系,在此基礎(chǔ)上,發(fā)電系統(tǒng)采用了諧波含量小、功率因數(shù)可調(diào)的交—直—交雙PWM變頻器。介紹了變流器整流側(cè)的基本原理和數(shù)學(xué)模型,考慮到本文研究的發(fā)電系統(tǒng)工作場合的特殊性,即和并網(wǎng)發(fā)電情況有所不同,需要變流器整流側(cè)有更快的響應(yīng)速度,因此,本文對變流器整流側(cè)提出了基于虛擬磁鏈定向的直接功率控制策略,采用了SVPWM整流調(diào)制手段使系統(tǒng)動(dòng)態(tài)的性能得到一定優(yōu)化。在Matlab/Simulink軟件環(huán)境中對該整流控制和調(diào)制手段進(jìn)行了仿真。在該仿真的基礎(chǔ)上,設(shè)計(jì)了相應(yīng)的硬件平臺(tái)進(jìn)行實(shí)驗(yàn)。本文最后介紹了BDFM獨(dú)立發(fā)電系統(tǒng)的實(shí)際控制系統(tǒng)的構(gòu)成,著重分析了基于TMS320F28335控制系統(tǒng)的設(shè)計(jì),且對該控制系統(tǒng)的軟件設(shè)計(jì)進(jìn)行了詳細(xì)分析。并在64kW繞線式無刷雙饋電機(jī)獨(dú)立發(fā)電系統(tǒng)的實(shí)驗(yàn)平臺(tái)上,進(jìn)行了一系列驗(yàn)證發(fā)電質(zhì)量的實(shí)驗(yàn)研究。實(shí)驗(yàn)結(jié)果表明發(fā)電系統(tǒng)的穩(wěn)態(tài)性能和動(dòng)態(tài)性能都能滿足要求,驗(yàn)證了本文所采用的控制方法的正確性與實(shí)用性。
[Abstract]:The problems of energy shortage and environmental pollution are becoming increasingly prominent, which has become the most important problem restricting the development of the global economy. In the development and utilization of renewable energy sources such as wind power, The key is to find out the power generation technology that meets the standard of performance. VSGs are one of the hot spots in the field of power generation technology. The application of brushless doubly-fed machine (BDFM) in VSG system has become a new research direction. The reliability of the motor is greatly improved, and the maintenance cost of the motor is greatly improved. More importantly, it can be used at relatively low voltage. Low power converter is used to control the motor. Based on this, the research content of this paper is mainly about the independent generation system of brushless doubly-fed machine with winding rotor. Firstly, the structure of stator and rotor of BDFM is explained. The operation of BDFM in the state of power generation is analyzed, and the BDFM and rotor speed d? in the three phase static abc coordinate system are derived respectively. The mathematical model in q-coordinate system. In this paper, the rotor speed d? Q is used to model and simulate the power generation condition of BDFM in the Matlab/Simulink simulation environment. Secondly, the energy flow relationship in the brushless doubly-fed machine is analyzed. On this basis, the harmonic content is small in the power generation system. AC-DC-AC dual PWM converter with adjustable power factor is introduced in this paper. The basic principle and mathematical model of rectifier side of converter are introduced. Considering the particularity of the working situation of power generation system studied in this paper, that is, it is different from grid-connected power generation. Therefore, a direct power control strategy based on virtual flux direction is proposed for the rectifier side of the converter. The dynamic performance of the system is optimized by means of SVPWM rectifier modulation. The control and modulation of the rectifier are simulated in the Matlab/Simulink software environment. The corresponding hardware platform is designed to carry out the experiment. Finally, the composition of the actual control system of the BDFM independent power generation system is introduced, and the design of the control system based on TMS320F28335 is emphatically analyzed. The software design of the control system is analyzed in detail, and on the experimental platform of 64kW winding brushless doubly-fed machine independent generation system, A series of experiments are carried out to verify the power generation quality. The experimental results show that the steady and dynamic performance of the power generation system can meet the requirements, and the correctness and practicability of the control methods used in this paper are verified.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM614

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