發(fā)布時(shí)間：2018-05-12 04:33

  本文選題：APF + 三電平三橋臂　； 參考：《廣東工業(yè)大學(xué)》2014年碩士論文

【摘要】：隨著現(xiàn)代工業(yè)技術(shù)和民用建筑行業(yè)的快速發(fā)展,低壓配電網(wǎng)中非線性負(fù)荷迅速增加。各種非線性和時(shí)變性電子變流器如逆變器、整流器和各種開關(guān)電源在工業(yè)生產(chǎn)和日常生活中得到越來越廣泛地應(yīng)用,其對(duì)電網(wǎng)的污染也日益嚴(yán)重,這些裝置從電網(wǎng)中消耗大量的無功功率,并產(chǎn)生大量的諧波分量注入電網(wǎng),導(dǎo)致電網(wǎng)的電壓和電流波形嚴(yán)重變形。諧波污染嚴(yán)重影響著電網(wǎng)和電氣設(shè)備的安全、可靠、經(jīng)濟(jì)運(yùn)行,影響著人民的生產(chǎn)生活用電質(zhì)量,甚至造成災(zāi)難。因此,諧波治理已經(jīng)成為電氣工程領(lǐng)域迫切需要解決的問題。有源電力濾波器(Active Power Filter,簡(jiǎn)稱APF)是一種動(dòng)態(tài)補(bǔ)償諧波和無功的新型電力電子裝置,它能對(duì)大小和頻率變化的諧波以及變化的無功進(jìn)行補(bǔ)償,是一種理想的諧波補(bǔ)償裝置。在三相四線制的低壓配電網(wǎng)中,三電平三橋臂APF由于具有du/dt低、電流紋波小、開關(guān)頻率低等優(yōu)點(diǎn),近年來越來越受到關(guān)注。 本文主要對(duì)三相四線制三電平三橋臂APF的電路進(jìn)行設(shè)計(jì),并對(duì)其兩個(gè)關(guān)鍵技術(shù)進(jìn)行深入研究,所完成的主要研究工作如下： (1)給出APF各部分的硬件電路設(shè)計(jì)方案,確定諧波電流檢測(cè)計(jì)算方法和功率變換電路的調(diào)制策略。 (2)詳細(xì)的設(shè)計(jì)了APF各部分硬件電路,并進(jìn)行了初步的調(diào)試。 (3)對(duì)改進(jìn)的FBD諧波電流檢測(cè)計(jì)算方法進(jìn)行了深入的探討。 (4)對(duì)基于a-b-c坐標(biāo)系的3D-SVPWM(三維空間矢量脈寬調(diào)制)技術(shù)進(jìn)行了詳細(xì)的分析。 (5)搭建了基于DSP TMS320C28335的三電平APF實(shí)驗(yàn)平臺(tái),滿足三相四線制三電平三橋臂APF復(fù)雜的控制需求,對(duì)本文的設(shè)計(jì)和研究?jī)?nèi)容進(jìn)行實(shí)驗(yàn)驗(yàn)證。
[Abstract]:With the rapid development of modern industrial technology and civil construction industry, nonlinear load in low voltage distribution network increases rapidly. All kinds of nonlinear and time-varying electronic converters such as inverters, rectifiers and switching power supplies are more and more widely used in industrial production and daily life, and their pollution to the power grid is becoming more and more serious. These devices consume a large amount of reactive power from the power grid and generate a large number of harmonic components to be injected into the power network, which results in the serious distortion of the voltage and current waveforms of the power network. Harmonic pollution seriously affects the safety, reliability and economic operation of power grid and electrical equipment, affects the quality of production and life of people, and even causes disaster. Therefore, harmonic control has become an urgent problem in the field of electrical engineering. Active Power filter (APF) is a new type of power electronic device which can dynamically compensate for harmonic and reactive power. It can compensate the harmonics and reactive power of changes in size and frequency, so it is an ideal harmonic compensation device. In the three-phase four-wire low voltage distribution network, the three-level three-arm APF has attracted more and more attention in recent years because of its advantages of low du/dt, low current ripple and low switching frequency. In this paper, the circuit of three-level APF with three-phase four-wire system is designed, and its two key technologies are deeply studied. The main research work is as follows: 1) the hardware circuit design scheme of each part of APF is given, the harmonic current detection calculation method and the modulation strategy of power conversion circuit are determined. The hardware circuit of each part of APF is designed and debugged in detail. The improved FBD harmonic current detection and calculation method is discussed in detail. The 3D-SVPWM (Three-dimensional Space Vector Pulse width Modulation) technology based on a-b-c coordinate system is analyzed in detail. A three-level APF experimental platform based on DSP TMS320C28335 is built to meet the complex control requirements of three-level APF with three-phase four-wire system. The design and research contents of this paper are verified by experiments.
【學(xué)位授予單位】：廣東工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM761;TN713.8

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本文編號(hào)：1877115