發(fā)布時(shí)間：2018-04-18 15:34

  本文選題：濾波器 + 關(guān)鍵技術(shù)��； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：隨科學(xué)技術(shù)的進(jìn)步,尤其是數(shù)字電子技術(shù)的發(fā)展,大量電子產(chǎn)品涌現(xiàn)出來(lái),使人們生活水平不斷提升。隨著用電裝置的迅速增加,越來(lái)越多的非線性電子裝置被應(yīng)用到生產(chǎn)及生活,引起非線性諧波的快速增加,與治理環(huán)境污染相似,治理諧波污染實(shí)際上是一種由量變到質(zhì)變的轉(zhuǎn)變。非線性電子裝置用電存在著非線性、不均衡性及沖擊性的特點(diǎn),諧波的存在給生產(chǎn)及生活帶來(lái)了極大影響。本課題意在設(shè)計(jì)一個(gè)電力電子濾波器,選取恰當(dāng)?shù)膮?shù),通過(guò)仿真實(shí)驗(yàn),能夠改善三相電網(wǎng)諧波問(wèn)題。論文首先論述了諧波的存在對(duì)三相電網(wǎng)及用電裝置所帶來(lái)的影響,隨著近些年諧波危害的加劇,迫切需要采取一定措施對(duì)其進(jìn)行抑制和補(bǔ)償。其次對(duì)濾波器的一些關(guān)鍵技術(shù)進(jìn)行了分析,包括諧波檢測(cè)技術(shù)、鎖相環(huán)控制技術(shù)、變流器控制技術(shù)等。詳細(xì)介紹了p-q諧波檢測(cè)和ip-iq諧波檢測(cè)技術(shù),為了提高電網(wǎng)電壓及負(fù)載均不對(duì)稱條件下的濾波效果,介紹了一種改進(jìn)的ip-iq諧波檢測(cè)技術(shù)。在分析了有諧波檢測(cè)方案的基礎(chǔ)上,考慮到濾波器濾波效果及性價(jià)比,介紹了一種無(wú)諧波檢測(cè)方案。接著根據(jù)濾波器各個(gè)元器件的要求確定了對(duì)應(yīng)參數(shù),并對(duì)濾波器主電路的一些元器件進(jìn)行了說(shuō)明,同時(shí)對(duì)系統(tǒng)進(jìn)行了硬件模塊設(shè)計(jì)及軟件設(shè)計(jì)。最后根據(jù)設(shè)計(jì)的濾波器電路及選取的元件參數(shù),借助MATLAB工具箱,選取應(yīng)用到的模塊,搭建電力電子濾波器的MATLAB仿真模型,分別在電阻性負(fù)載及負(fù)載突變情況下進(jìn)行了仿真,觀察其動(dòng)態(tài)響應(yīng)及恢復(fù)時(shí)間,同時(shí)進(jìn)行了一系列負(fù)載模擬實(shí)驗(yàn),并對(duì)仿真結(jié)果進(jìn)行了分析。
[Abstract]:With the progress of science and technology, especially the development of digital electronic technology, a large number of electronic products emerge, which makes people's living standard improve constantly.With the rapid increase of electric devices, more and more nonlinear electronic devices are used in production and life, which cause the rapid increase of nonlinear harmonics, which is similar to environmental pollution control.Controlling harmonic pollution is actually a change from quantitative change to qualitative change.Nonlinear electronic devices have the characteristics of nonlinearity, imbalance and impact. The existence of harmonics has a great impact on production and daily life.The purpose of this paper is to design a power electronic filter, select appropriate parameters, and improve the harmonic problem of three-phase power system through simulation experiments.In this paper, the influence of harmonics on three-phase power network and electric devices is discussed firstly. With the increase of harmonic damage in recent years, some measures are urgently needed to suppress and compensate the harmonics.Secondly, some key technologies of the filter are analyzed, including harmonic detection technology, phase-locked loop control technology, converter control technology and so on.The p-q harmonic detection and ip-iq harmonic detection techniques are introduced in detail. In order to improve the filtering effect under the condition of asymmetric voltage and load, an improved ip-iq harmonic detection technique is introduced.Based on the analysis of the harmonic detection scheme, a harmonic free detection scheme is introduced considering the filter filtering effect and the ratio of performance to price.Then according to the requirements of each component of the filter, the corresponding parameters are determined, and some components of the main circuit of the filter are described. At the same time, the hardware module and software design of the system are carried out.Finally, according to the designed filter circuit and selected component parameters, with the help of MATLAB toolbox, the MATLAB simulation model of power electronic filter is built, and the simulation is carried out in the case of resistive load and load sudden change.The dynamic response and recovery time were observed, and a series of load simulation experiments were carried out, and the simulation results were analyzed.
【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)】：TM761

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